Rusty  Shanahan

Rusty Shanahan

1598847240

Which Type of Delivery Pipeline Does Your Business Rely On?

delivery pipeline is the thing that takes freshly written software out of the hands of a developer, and turns it into running services, potentially accessible to the public. Most (probably all) Software-as-a-Service products use a delivery pipeline.

There’s a spectrum of technologies and approaches that are used by companies, but there are two extremes.

I was explaining this to a friend the other day with an analogy.

First consider a mechanical watch.

Image for post

The movement in mechanical watches are often engineering masterpieces! Craftsmen have developed this machine that has so many intricately connected moving components. The principles to get this just right have been learned over generations.

Just by looking at it, you can see its value… imagine how many hours went into to creating such an ornate mechanism!

All of that beauty comes at a price though: costs tend to rise exponentially with increased reliability and number of features. Think about how each of those components is cast, cleaned, polished, tuned, and assembled. There’s a lot of work involved in creating each watch. The sheer number of moving pieces cause risk: imagine what happens if a piece of dirt finds its way in there, or one of those screws became loose?

#sre #delivery-software #devops #opsec

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Which Type of Delivery Pipeline Does Your Business Rely On?
Carmen  Grimes

Carmen Grimes

1595491178

Best Electric Bikes and Scooters for Rental Business or Campus Facility

The electric scooter revolution has caught on super-fast taking many cities across the globe by storm. eScooters, a renovated version of old-school scooters now turned into electric vehicles are an environmentally friendly solution to current on-demand commute problems. They work on engines, like cars, enabling short traveling distances without hassle. The result is that these groundbreaking electric machines can now provide faster transport for less — cheaper than Uber and faster than Metro.

Since they are durable, fast, easy to operate and maintain, and are more convenient to park compared to four-wheelers, the eScooters trend has and continues to spike interest as a promising growth area. Several companies and universities are increasingly setting up shop to provide eScooter services realizing a would-be profitable business model and a ready customer base that is university students or residents in need of faster and cheap travel going about their business in school, town, and other surrounding areas.

Electric Scooters Trends and Statistics

In many countries including the U.S., Canada, Mexico, U.K., Germany, France, China, Japan, India, Brazil and Mexico and more, a growing number of eScooter users both locals and tourists can now be seen effortlessly passing lines of drivers stuck in the endless and unmoving traffic.

A recent report by McKinsey revealed that the E-Scooter industry will be worth― $200 billion to $300 billion in the United States, $100 billion to $150 billion in Europe, and $30 billion to $50 billion in China in 2030. The e-Scooter revenue model will also spike and is projected to rise by more than 20% amounting to approximately $5 billion.

And, with a necessity to move people away from high carbon prints, traffic and congestion issues brought about by car-centric transport systems in cities, more and more city planners are developing more bike/scooter lanes and adopting zero-emission plans. This is the force behind the booming electric scooter market and the numbers will only go higher and higher.

Companies that have taken advantage of the growing eScooter trend develop an appthat allows them to provide efficient eScooter services. Such an app enables them to be able to locate bike pick-up and drop points through fully integrated google maps.

List of Best Electric Bikes for Rental Business or Campus Facility 2020:

It’s clear that e scooters will increasingly become more common and the e-scooter business model will continue to grab the attention of manufacturers, investors, entrepreneurs. All this should go ahead with a quest to know what are some of the best electric bikes in the market especially for anyone who would want to get started in the electric bikes/scooters rental business.

We have done a comprehensive list of the best electric bikes! Each bike has been reviewed in depth and includes a full list of specs and a photo.

Billy eBike

mobile-best-electric-bikes-scooters https://www.kickstarter.com/projects/enkicycles/billy-were-redefining-joyrides

To start us off is the Billy eBike, a powerful go-anywhere urban electric bike that’s specially designed to offer an exciting ride like no other whether you want to ride to the grocery store, cafe, work or school. The Billy eBike comes in 4 color options – Billy Blue, Polished aluminium, Artic white, and Stealth black.

Price: $2490

Available countries

Available in the USA, Europe, Asia, South Africa and Australia.This item ships from the USA. Buyers are therefore responsible for any taxes and/or customs duties incurred once it arrives in your country.

Features

  • Control – Ride with confidence with our ultra-wide BMX bars and a hyper-responsive twist throttle.
  • Stealth- Ride like a ninja with our Gates carbon drive that’s as smooth as butter and maintenance-free.
  • Drive – Ride further with our high torque fat bike motor, giving a better climbing performance.
  • Accelerate – Ride quicker with our 20-inch lightweight cutout rims for improved acceleration.
  • Customize – Ride your own way with 5 levels of power control. Each level determines power and speed.
  • Flickable – Ride harder with our BMX /MotoX inspired geometry and lightweight aluminum package

Specifications

  • Maximum speed: 20 mph (32 km/h)
  • Range per charge: 41 miles (66 km)
  • Maximum Power: 500W
  • Motor type: Fat Bike Motor: Bafang RM G060.500.DC
  • Load capacity: 300lbs (136kg)
  • Battery type: 13.6Ah Samsung lithium-ion,
  • Battery capacity: On/off-bike charging available
  • Weight: w/o batt. 48.5lbs (22kg), w/ batt. 54lbs (24.5kg)
  • Front Suspension: Fully adjustable air shock, preload/compression damping /lockout
  • Rear Suspension: spring, preload adjustment
  • Built-in GPS

Why Should You Buy This?

  • Riding fun and excitement
  • Better climbing ability and faster acceleration.
  • Ride with confidence
  • Billy folds for convenient storage and transportation.
  • Shorty levers connect to disc brakes ensuring you stop on a dime
  • belt drives are maintenance-free and clean (no oil or lubrication needed)

**Who Should Ride Billy? **

Both new and experienced riders

**Where to Buy? **Local distributors or ships from the USA.

Genze 200 series e-Bike

genze-best-electric-bikes-scooters https://www.genze.com/fleet/

Featuring a sleek and lightweight aluminum frame design, the 200-Series ebike takes your riding experience to greater heights. Available in both black and white this ebike comes with a connected app, which allows you to plan activities, map distances and routes while also allowing connections with fellow riders.

Price: $2099.00

Available countries

The Genze 200 series e-Bike is available at GenZe retail locations across the U.S or online via GenZe.com website. Customers from outside the US can ship the product while incurring the relevant charges.

Features

  • 2 Frame Options
  • 2 Sizes
  • Integrated/Removable Battery
  • Throttle and Pedal Assist Ride Modes
  • Integrated LCD Display
  • Connected App
  • 24 month warranty
  • GPS navigation
  • Bluetooth connectivity

Specifications

  • Maximum speed: 20 mph with throttle
  • Range per charge: 15-18 miles w/ throttle and 30-50 miles w/ pedal assist
  • Charging time: 3.5 hours
  • Motor type: Brushless Rear Hub Motor
  • Gears: Microshift Thumb Shifter
  • Battery type: Removable Samsung 36V, 9.6AH Li-Ion battery pack
  • Battery capacity: 36V and 350 Wh
  • Weight: 46 pounds
  • Derailleur: 8-speed Shimano
  • Brakes: Dual classic
  • Wheels: 26 x 20 inches
  • Frame: 16, and 18 inches
  • Operating Mode: Analog mode 5 levels of Pedal Assist Thrott­le Mode

Norco from eBikestore

norco-best-electric-bikes-scooters https://ebikestore.com/shop/norco-vlt-s2/

The Norco VLT S2 is a front suspension e-Bike with solid components alongside the reliable Bosch Performance Line Power systems that offer precise pedal assistance during any riding situation.

Price: $2,699.00

Available countries

This item is available via the various Norco bikes international distributors.

Features

  • VLT aluminum frame- for stiffness and wheel security.
  • Bosch e-bike system – for their reliability and performance.
  • E-bike components – for added durability.
  • Hydraulic disc brakes – offer riders more stopping power for safety and control at higher speeds.
  • Practical design features – to add convenience and versatility.

Specifications

  • Maximum speed: KMC X9 9spd
  • Motor type: Bosch Active Line
  • Gears: Shimano Altus RD-M2000, SGS, 9 Speed
  • Battery type: Power Pack 400
  • Battery capacity: 396Wh
  • Suspension: SR Suntour suspension fork
  • Frame: Norco VLT, Aluminum, 12x142mm TA Dropouts

Bodo EV

bodo-best-electric-bikes-scootershttp://www.bodoevs.com/bodoev/products_show.asp?product_id=13

Manufactured by Bodo Vehicle Group Limited, the Bodo EV is specially designed for strong power and extraordinary long service to facilitate super amazing rides. The Bodo Vehicle Company is a striking top in electric vehicles brand field in China and across the globe. Their Bodo EV will no doubt provide your riders with high-level riding satisfaction owing to its high-quality design, strength, breaking stability and speed.

Price: $799

Available countries

This item ships from China with buyers bearing the shipping costs and other variables prior to delivery.

Features

  • Reliable
  • Environment friendly
  • Comfortable riding
  • Fashionable
  • Economical
  • Durable – long service life
  • Braking stability
  • LED lighting technology

Specifications

  • Maximum speed: 45km/h
  • Range per charge: 50km per person
  • Charging time: 8 hours
  • Maximum Power: 3000W
  • Motor type: Brushless DC Motor
  • Load capacity: 100kg
  • Battery type: Lead-acid battery
  • Battery capacity: 60V 20AH
  • Weight: w/o battery 47kg

#android app #autorent #entrepreneurship #ios app #minimum viable product (mvp) #mobile app development #news #app like bird #app like bounce #app like lime #autorent #best electric bikes 2020 #best electric bikes for rental business #best electric kick scooters 2020 #best electric kickscooters for rental business #best electric scooters 2020 #best electric scooters for rental business #bird scooter business model #bird scooter rental #bird scooter rental cost #bird scooter rental price #clone app like bird #clone app like bounce #clone app like lime #electric rental scooters #electric scooter company #electric scooter rental business #how do you start a moped #how to start a moped #how to start a scooter rental business #how to start an electric company #how to start electric scooterrental business #lime scooter business model #scooter franchise #scooter rental business #scooter rental business for sale #scooter rental business insurance #scooters franchise cost #white label app like bird #white label app like bounce #white label app like lime

Carmen  Grimes

Carmen Grimes

1595494844

How to start an electric scooter facility/fleet in a university campus/IT park

Are you leading an organization that has a large campus, e.g., a large university? You are probably thinking of introducing an electric scooter/bicycle fleet on the campus, and why wouldn’t you?

Introducing micro-mobility in your campus with the help of such a fleet would help the people on the campus significantly. People would save money since they don’t need to use a car for a short distance. Your campus will see a drastic reduction in congestion, moreover, its carbon footprint will reduce.

Micro-mobility is relatively new though and you would need help. You would need to select an appropriate fleet of vehicles. The people on your campus would need to find electric scooters or electric bikes for commuting, and you need to provide a solution for this.

To be more specific, you need a short-term electric bike rental app. With such an app, you will be able to easily offer micro-mobility to the people on the campus. We at Devathon have built Autorent exactly for this.

What does Autorent do and how can it help you? How does it enable you to introduce micro-mobility on your campus? We explain these in this article, however, we will touch upon a few basics first.

Micro-mobility: What it is

micro-mobility

You are probably thinking about micro-mobility relatively recently, aren’t you? A few relevant insights about it could help you to better appreciate its importance.

Micro-mobility is a new trend in transportation, and it uses vehicles that are considerably smaller than cars. Electric scooters (e-scooters) and electric bikes (e-bikes) are the most popular forms of micro-mobility, however, there are also e-unicycles and e-skateboards.

You might have already seen e-scooters, which are kick scooters that come with a motor. Thanks to its motor, an e-scooter can achieve a speed of up to 20 km/h. On the other hand, e-bikes are popular in China and Japan, and they come with a motor, and you can reach a speed of 40 km/h.

You obviously can’t use these vehicles for very long commutes, however, what if you need to travel a short distance? Even if you have a reasonable public transport facility in the city, it might not cover the route you need to take. Take the example of a large university campus. Such a campus is often at a considerable distance from the central business district of the city where it’s located. While public transport facilities may serve the central business district, they wouldn’t serve this large campus. Currently, many people drive their cars even for short distances.

As you know, that brings its own set of challenges. Vehicular traffic adds significantly to pollution, moreover, finding a parking spot can be hard in crowded urban districts.

Well, you can reduce your carbon footprint if you use an electric car. However, electric cars are still new, and many countries are still building the necessary infrastructure for them. Your large campus might not have the necessary infrastructure for them either. Presently, electric cars don’t represent a viable option in most geographies.

As a result, you need to buy and maintain a car even if your commute is short. In addition to dealing with parking problems, you need to spend significantly on your car.

All of these factors have combined to make people sit up and think seriously about cars. Many people are now seriously considering whether a car is really the best option even if they have to commute only a short distance.

This is where micro-mobility enters the picture. When you commute a short distance regularly, e-scooters or e-bikes are viable options. You limit your carbon footprints and you cut costs!

Businesses have seen this shift in thinking, and e-scooter companies like Lime and Bird have entered this field in a big way. They let you rent e-scooters by the minute. On the other hand, start-ups like Jump and Lyft have entered the e-bike market.

Think of your campus now! The people there might need to travel short distances within the campus, and e-scooters can really help them.

How micro-mobility can benefit you

benefits-micromobility

What advantages can you get from micro-mobility? Let’s take a deeper look into this question.

Micro-mobility can offer several advantages to the people on your campus, e.g.:

  • Affordability: Shared e-scooters are cheaper than other mass transportation options. Remember that the people on your campus will use them on a shared basis, and they will pay for their short commutes only. Well, depending on your operating model, you might even let them use shared e-scooters or e-bikes for free!
  • Convenience: Users don’t need to worry about finding parking spots for shared e-scooters since these are small. They can easily travel from point A to point B on your campus with the help of these e-scooters.
  • Environmentally sustainable: Shared e-scooters reduce the carbon footprint, moreover, they decongest the roads. Statistics from the pilot programs in cities like Portland and Denver showimpressive gains around this key aspect.
  • Safety: This one’s obvious, isn’t it? When people on your campus use small e-scooters or e-bikes instead of cars, the problem of overspeeding will disappear. you will see fewer accidents.

#android app #autorent #ios app #mobile app development #app like bird #app like bounce #app like lime #autorent #bird scooter business model #bird scooter rental #bird scooter rental cost #bird scooter rental price #clone app like bird #clone app like bounce #clone app like lime #electric rental scooters #electric scooter company #electric scooter rental business #how do you start a moped #how to start a moped #how to start a scooter rental business #how to start an electric company #how to start electric scooterrental business #lime scooter business model #scooter franchise #scooter rental business #scooter rental business for sale #scooter rental business insurance #scooters franchise cost #white label app like bird #white label app like bounce #white label app like lime

Why Business Cards Printing are essential for your business

No matter how technological advancement helps in communication but business card printing still worth it. Most businesses prefer to have and share business cards to develop a direct relationship with the potential market. It is an important part of the promotional and branding strategy and effectively described the brand’s nature. It gives ease in sharing the business-related information in the public like at conference, workshops and other.

This is image title

Moreover, a quality visiting card printing online provides the impression of products or services. According to the random research, it is stated that most of the customers draw the conclusion about the business and its products from the card quality or its printing. So, a smart business card with the right size and content is essential for the business.

Here are the factors that will help to understand the importance of the business card in the brand promotion or more:

Provide Contact Details:

One of the main reasons behind business card printing is the contact sharing features. The card contains contact details, name, logo, and other related information that helps the client to reach the business. Further, it helps to describe the brand or product nature before approaching the product or services. Other than the technology usage or sharing of the information through devices, business cards are most suitable and a handy item that worth a lot for the customers.

This is image title

The impression of the Brand:

The business card is a source that will deliver the first impression of the brand or business towards the potential buyers. It is something handy with the physical touch that develops a direct relationship with the potential market. While going to print business cards that quality, printing style, and overall outlook matters a lot. Because it works as the first impression of the business and its product or services for the potential market. So, the worthy card made with durable material and have an attractive color combination or layout can capture the interest easily.

It contains the company logo, name, design, and color combination that quickly attain the interest of the audience. On other hand, it is an important factor to pay attention to while making the designing and printing decision about the business card.

Direct Marketing Facility:

No doubt there are multiple marketing and promotional tools are available for the product or business promotion. But engraved business cards online is something incredible and handy that provide the physical touch experience. It works as the marketing or promotional element that helps in sharing the details directly to the potential market. With the more physical interaction that the business cards offer to the buyers and business.

The important thing that has to be considered in making the custom business cards, related to the content adjustment, design, and color combination. It helps to capture the buyer’s interest and deliver the right impression towards them.

This is image title

Appreciated in Different Cultures:

The business cards preferably deliver the right knowledge and impression about the product or services. It described the brand position, nature of the products or services, and other relevant skills. In most cultures, it is appreciated to have and share physical business cards as an information-sharing tool. In face-to-face interaction, develops a network and promotes sharing the business information in a circle.

Ease to Provide a Business Reference:

In business cards, online people find multiple opportunities in designing and Printing Services with a significant impression. It helps to make an easy referral related to particular services and a person with a skill set. The business car not only contains the address, contact information, or brand-related knowledge. It provides details about the particular person and reflects the skill set. Multiple factors truly help to describe the right impression of the brand through color, text, and images.

A tool to Develop Trust:

For business growth and development, it is important to gain the trust level of the customers. With the custom business cards, it is easier to attain the trust of the customers. in the competitive business atmosphere for a business survival trust is the only key, that can be over the product or on a company as well. Through the business card, it is easier to exchange and share personal warmth feelings.

With Business Cards Printing, it is easier to show more graphical representation through colors and design. Moreover, with the physical touch, it is easier to give trust feelings or more.

This is image title

Final Consideration!

In the competitive business world, the business card is a source to deliver information and capture the interest of potential buyers. It helps to impress the audience and provide relevant product details and skills that build trust or act as the direct promotional tool.

#business cards printing #visiting card printing online #go print business cards #engraved business cards online #custom business cards #business cards online

How to Develop On-Demand Pizza Delivery App?

AppClues Infotech is a mobile app development company providing high-end online and offline custom mobile app solutions to startups, small and medium businesses (SMBs) as well as large Fortune Global enterprises, spread across India, USA and UK.

Depending on the features the price of the application varies to develop On-demand Pizza Delivery App it may cost you around-$7000 to $20000.

Features Of AppClues App develpoment

  • Request Management
  • Look Menu for Food
  • Cook Allocation
  • Allotting Delivery to Delivery Men
  • Conveyance Tracking for Food Order
  • Surveys and Feedback for Order Delivered
  • Referral Management (Friend)
  • Continuous Communication (For Order Confirmation)
  • Limited time Offers (Promo Codes)

Over the past years, AppClues Infotech has been able to successfully deliver and deploy many enterprise and consumer mobile apps for its clients.The applications developed by AppClues Infotech under mobility solutions have been spread across various platforms and development.

Our top-notch engineers craft flawless code for the system with the largest number of users in the world.

Why Choose us ?

  • Aligned structure
  • Domain Expertise
  • On time Delivery
  • 24/7 Support
  • Detailed analysis
  • Aesthetic Designs
  • Agile Development
  • Rigorous Testing
  • Smooth Handover

AppClues Infotech Builds software that makes businesses more efficient and customers’ lives easier is what we’re bet at. Products we create are carefully designed with end users in mind and brought to life with elegantly written code.

#pizza delivery app development #on-demand pizza delivery app development #pizza delivery app development for android & iphone #pizza delivery app development company #food delivery app development #how to build a food delivery app

Создание веб-приложения Crud с использованием Angular | Angular 13 CRUD

Angular CRUD означает приложение, состоящее из функций создания, чтения, обновления и удаления данных. Это исчерпывающее руководство по созданию веб-приложений CRUD (создание, чтение, обновление, удаление) с использованием новой Angular Framework. Только что выпущенный Angular содержит несколько новых функций и улучшений.

Сначала установим Angular с помощью Angular CLI, а потом продолжим разработку фронтенда и бэкенда.

1: Установите Angular и другие зависимости.

Если у вас более старая версия @angular/cli, вы можете запустить следующую команду, чтобы установить последние версии.

npm uninstall -g @angular/cli
npm cache verify
npm install -g @angular/cli

Если у вас возникли какие-либо проблемы, ознакомьтесь с моим Как обновить Angular CLI до версии 7Это поможет вам обновить ваш Angular CLI , и вы создадите совершенно новый проект Angular 7.

Хорошо, теперь, если вы введете следующую команду, вы увидите, что мы обновили Angular CLI.

Angular 7 Пример CRUD |  Учебное пособие по стеку MEAN

Теперь вы создадите новый проект Angular, используя следующую команду.

ng new angular7crud
cd angular7crud

Пример CRUD стека MEAN

Зайдя в папку проекта, откройте проект в Visual Studio Code с помощью следующей команды. Если вы не используете его, то начните использовать его. Это лучший редактор для разработки Javascript .

code .

Во время установки мы включили маршрутизацию для нашего приложения. Это новое в Angular  , потому что оно будет подсказывать нам при установке шаблона angular. Вы можете проверить файл с именем app-routing.module.ts  внутри каталога src >> app .

Затем установите Bootstrap 4 CSS Framework с помощью следующей команды.

npm install bootstrap --save

Теперь добавьте его в  файл angular.json  .

"styles": [
   "src/styles.css",
   "./node_modules/bootstrap/dist/css/bootstrap.min.css"
 ],

Итак, теперь мы можем использовать классы Bootstrap 4 в нашем проекте. 

Запустите сервер разработки Angular с помощью следующей команды.

ng serve -o

 

Угловой 7 прохождение

Описание Проекта

Мы создадим проект, в котором пользователи смогут ввести свое имя пользователя  , название компании  и номер GST из формы и отправить ее. Если значения неверны, они будут проверены во внешнем интерфейсе, и форма не будет отправлена. С другой стороны, если все значения кажутся идеальными, мы отправим форму на серверный API , сохранив значения в базе данных MongoDB .

Итак, теперь мы создадим несколько угловых компонентов для выполнения этой работы.

2: Создание угловых компонентов

Введите следующую команду для создания Angular Components . Мы будем выполнять операции создания, чтения, обновления. Итак, мы создадим три компонента.

ng g c gst-add --spec=false
ng g c gst-get --spec=false
ng g c gst-edit --spec=false

Учебное пособие по угловому CRUD

Все три компонента автоматически регистрируются в файле app.module.ts  . Нам нужно настроить маршрутизацию компонентов angular внутри файла app-routing.module.ts  .

// app-routing.module.ts

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { GstAddComponent } from './gst-add/gst-add.component';
import { GstEditComponent } from './gst-edit/gst-edit.component';
import { GstGetComponent } from './gst-get/gst-get.component';

const routes: Routes = [
  {
    path: 'business/create',
    component: GstAddComponent
  },
  {
    path: 'business/edit/:id',
    component: GstEditComponent
  },
  {
    path: 'business',
    component: GstGetComponent
  }
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})

export class AppRoutingModule { }

Теперь вы можете видеть внутри  файла app.component.html  директиву <router-outlet>  . Эта директива помогает нам отображать различные компоненты на основе URI маршрута.

3: Создайте угловую навигацию

Напишите следующий код в  файле app.component.html  .

<nav class="navbar navbar-expand-sm bg-light">
  <div class="container-fluid">
    <ul class="navbar-nav">
      <li class="nav-item">
        <a routerLink="business/create" class="nav-link" routerLinkActive="active">
          Create Business
        </a>
      </li>
      <li class="nav-item">
        <a routerLink="business" class="nav-link" routerLinkActive="active">
          Business
        </a>
      </li> 
    </ul>
  </div>
</nav>

<div class="container">
  <router-outlet></router-outlet>
</div>

Сохраните файл и перейдите в браузер и нажмите на две ссылки. Вы можете видеть, что мы можем видеть различные компоненты на основе навигации.

4: Установите индикатор выполнения угловой маршрутизации.

Введите следующую команду, чтобы установить  библиотеку ng2-slim-loading-bar .

npm install ng2-slim-loading-bar --save

Итак, если вы устанавливаете сторонние пакеты прямо сейчас, они несовместимы с Angular . Чтобы преодолеть разрыв между  Angular  и сторонними пакетами, нам нужно установить следующую библиотеку. Вот и все.

npm install rxjs-compat --save

Теперь импортируйте  SlimLoadingBarModule  в  файл app.module.ts  .

// app.module.ts

import { SlimLoadingBarModule } from 'ng2-slim-loading-bar';

imports: [
    ...
    SlimLoadingBarModule
],

Следующим шагом будет включение стилей вместе с библиотекой в ​​файл src >> styles.css  .

@import "../node_modules/ng2-slim-loading-bar/style.css";

5: Добавление событий маршрутизатора.

Angular RouterModule дает нам следующие модули событий.

  1. НавигацияНачало
  2. NavigationEnd
  3. NavigationError
  4. НавигацияОтмена
  5. Маршрутизатор
  6. Мероприятие

Теперь напишите следующий код в  файле app.component.ts  .

// app.component.ts

import { Component } from '@angular/core';
import {SlimLoadingBarService} from 'ng2-slim-loading-bar';
import { NavigationCancel,
        Event,
        NavigationEnd,
        NavigationError,
        NavigationStart,
        Router } from '@angular/router';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  title = 'angular7crud';
  constructor(private _loadingBar: SlimLoadingBarService, private _router: Router) {
    this._router.events.subscribe((event: Event) => {
      this.navigationInterceptor(event);
    });
  }
  private navigationInterceptor(event: Event): void {
    if (event instanceof NavigationStart) {
      this._loadingBar.start();
    }
    if (event instanceof NavigationEnd) {
      this._loadingBar.complete();
    }
    if (event instanceof NavigationCancel) {
      this._loadingBar.stop();
    }
    if (event instanceof NavigationError) {
      this._loadingBar.stop();
    }
  }
}

Он перехватывает событие маршрутизации и добавляет компонент панели загрузки к каждому маршруту, чтобы мы могли видеть индикацию маршрутизации каждый раз, когда меняем маршруты.

Последнее изменение для отображения индикатора маршрутизации — добавление директивы ng2-slim-loading-bar в  файл app.component.html  вверху страницы.

<ng2-slim-loading-bar color="blue"></ng2-slim-loading-bar>

<nav class="navbar navbar-expand-sm bg-light">
  <div class="container-fluid">
    <ul class="navbar-nav">
      <li class="nav-item">
        <a routerLink="business/create" class="nav-link" routerLinkActive="active">
          Create Business
        </a>
      </li>
      <li class="nav-item">
        <a routerLink="business" class="nav-link" routerLinkActive="active">
          Business
        </a>
      </li> 
    </ul>
  </div>
</nav>

<div class="container">
  <router-outlet></router-outlet>
</div>

Сохраните файл и зайдите в терминал, чтобы посмотреть, есть ли ошибка, а если нет, зайдите в браузер и измените маршруты, и вы можете видеть, что теперь мы можем видеть индикатор маршрутизации.

6: Добавить загрузочную форму

В файл gst  -add.component.html  добавьте следующую  форму начальной загрузки 4 .

<div class="card">
  <div class="card-body">
    <form>
      <div class="form-group">
        <label class="col-md-4">Person Name</label>
        <input type="text" class="form-control" />
      </div>
      <div class="form-group">
        <label class="col-md-4">Business Name </label>
        <input type="text" class="form-control" />
      </div>
      <div class="form-group">
        <label class="col-md-4">Business GST Number </label>
        <input type="text" class="form-control" />
      </div>
      <div class="form-group">
        <button type="submit" class="btn btn-primary">Add Business</button>
      </div>
    </form>
  </div>
</div>

Angular 7 Демонстрация CRUD

7: Добавить проверку угловой формы

Мы будем использовать ReactiveFormsModule . Поэтому, если вы новичок в Angular Form Validation , ознакомьтесь с моей статьей Angular Form Validation  в этом блоге.

Теперь импортируйте  ReactiveFormsModule  в  файл app.module.ts  .

// app.module.ts

import { ReactiveFormsModule } from '@angular/forms';

imports: [
    ...
    ReactiveFormsModule
],

Теперь нам нужно написать код для  файла app.component.ts  . Помните, что это не шаблонная форма. Поэтому мы изменим код внутри файла app.component.ts  .

Сначала мы импортируем  модули FormGroup, FormBuilder, Validators  из  @angular/forms .

Кроме того, создайте конструктор и создайте экземпляр  FormBuilder .

Поэтому напишите следующий код в  файле gst-add.component.ts  .

// gst-add.component.ts

import { Component, OnInit } from '@angular/core';
import { FormGroup,  FormBuilder,  Validators } from '@angular/forms';

@Component({
  selector: 'app-gst-add',
  templateUrl: './gst-add.component.html',
  styleUrls: ['./gst-add.component.css']
})
export class GstAddComponent implements OnInit {

  angForm: FormGroup;
  constructor(private fb: FormBuilder) {
    this.createForm();
  }

  createForm() {
    this.angForm = this.fb.group({
      person_name: ['', Validators.required ],
      business_name: ['', Validators.required ],
      business_gst_number: ['', Validators.required ]
    });
  }

  ngOnInit() {
  }

}

Мы использовали конструктор форм для обработки всей проверки. Итак, в этом конструкторе мы создаем форму с правилами проверки. В нашем примере есть три поля. Если вводимый текст пустой, он выдаст ошибку, и нам нужно его отобразить.

Теперь напишите следующий код в  файле gst-add.component.html  .

<div class="card">
  <div class="card-body">
    <form [formGroup]="angForm" novalidate>
      <div class="form-group">
        <label class="col-md-4">Person Name</label>
        <input type="text" class="form-control" formControlName="person_name" #person_name />
      </div>
      <div *ngIf="angForm.controls['person_name'].invalid && (angForm.controls['person_name'].dirty || angForm.controls['person_name'].touched)" class="alert alert-danger">
        <div *ngIf="angForm.controls['person_name'].errors.required">
          Person Name is required.
        </div>
      </div>
      <div class="form-group">
        <label class="col-md-4">Business Name </label>
        <input type="text" class="form-control" formControlName="business_name" #business_name />
      </div>
      <div *ngIf="angForm.controls['business_name'].invalid && (angForm.controls['business_name'].dirty || angForm.controls['business_name'].touched)" class="alert alert-danger">
        <div *ngIf="angForm.controls['business_name'].errors.required">
          Person Business is required.
        </div>
      </div>
      <div class="form-group">
        <label class="col-md-4">Business GST Number </label>
        <input type="text" class="form-control" formControlName="business_gst_number" #business_gst_number />
      </div>
      <div *ngIf="angForm.controls['business_gst_number'].invalid && (angForm.controls['business_gst_number'].dirty || angForm.controls['business_gst_number'].touched)" class="alert alert-danger">
        <div *ngIf="angForm.controls['business_gst_number'].errors.required">
          Business GST Number is required.
        </div>
      </div>
      <div class="form-group">
        <button type="submit" 
        [disabled]="angForm.pristine || angForm.invalid" 
        class="btn btn-primary">Add Business</button>
      </div>
    </form>
  </div>
</div>

Сохраните файл и зайдите в браузер, и вы увидите, что если вы не поместите какое-либо значение в поле ввода, вы увидите ошибки.

Пример проверки формы Angular 7

8: Настройте HttpClientModule

Импортируйте  HttpClientModule  в  файл app.module.ts  .

// app.module.ts

import { HttpClientModule } from '@angular/common/http';

imports: [
   ...
    HttpClientModule
 ],

9: Создайте модель.

В папке  приложения src >>  создайте один файл с именем  Business.ts  и добавьте следующий код.

// Business.ts

export default class Business {
  person_name: String;
  business_name: String;
  business_gst_number: Number;
}

10: Создайте файл службы Angular.

Введите следующую команду, чтобы сгенерировать файл службы.

ng g service business --spec=false

Итак, ваш основной  файл business.service.ts  выглядит так.

// business.service.ts

import { Injectable } from '@angular/core';

@Injectable({
  providedIn: 'root'
})
export class BusinessService {

  constructor() { }
}

Теперь импортируйте   файл  business.service.ts в файл app.module.ts  .

// app.module.ts

import { BusinessService } from './business.service';

providers: [ BusinessService ],

11: Отправить данные на сервер узла

Нам нужно написать код, который будет отправлять HTTP - запрос POST с данными на сервер Node.js и сохранять данные в базе данных MongoDB .

Напишите следующий код в  файле business.service.ts  .

// business.service.ts

import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';

@Injectable({
  providedIn: 'root'
})
export class BusinessService {

  uri = 'http://localhost:4000/business';

  constructor(private http: HttpClient) { }

  addBusiness(person_name, business_name, business_gst_number) {
    const obj = {
      person_name: person_name,
      business_name: business_name,
      business_gst_number: business_gst_number
    };
    console.log(obj);
    this.http.post(`${this.uri}/add`, obj)
        .subscribe(res => console.log('Done'));
  }
}

Мы определили URL-адрес API нашего бэкэнда, но мы еще не создали никакого бэкэнда, но сделаем это за пару шагов.

Нам нужно добавить событие клика к кнопке «Добавить бизнес». Поэтому добавьте следующий код в файл gst-add.component.html  .

<div class="form-group">
    <button (click)="addBusiness(person_name.value, business_name.value, business_gst_number.value)"
        [disabled]="angForm.pristine || angForm.invalid" 
        class="btn btn-primary">
        Add Business
     </button>
</div>

Поэтому, когда ошибок нет, мы можем отправить форму, и она  вызовет функцию addBusiness  компонента . Оттуда мы вызовем службу angular, и служба отправит запрос HTTP Post на сервер Node.js.

Теперь добавьте  функцию addBusiness в  файл  gst-add.component.ts  . Поэтому напишите следующий код  в файле gst-add.component.ts  .

// gst-add.component.ts

import { Component, OnInit } from '@angular/core';
import { FormGroup,  FormBuilder,  Validators } from '@angular/forms';
import { BusinessService } from '../business.service';

@Component({
  selector: 'app-gst-add',
  templateUrl: './gst-add.component.html',
  styleUrls: ['./gst-add.component.css']
})
export class GstAddComponent implements OnInit {

  angForm: FormGroup;
  constructor(private fb: FormBuilder, private bs: BusinessService) {
    this.createForm();
  }

  createForm() {
    this.angForm = this.fb.group({
      person_name: ['', Validators.required ],
      business_name: ['', Validators.required ],
      business_gst_number: ['', Validators.required ]
    });
  }

  addBusiness(person_name, busines_name, business_gst_number) {
    this.bs.addBusiness(person_name, busines_name, business_gst_number);
  }

  ngOnInit() {
  }

}

Здесь мы определили функцию, а также импортировали  файл business.service.ts  . Затем создайте экземпляр объекта внутри конструктора и вызовите функцию файла businsess.service.ts .

Мы уже  написали функцию  addBusiness  в файле business.service.ts  . Теперь нам нужно настроить внутренний API.

12: Создайте серверный API Node.js

Внутри корневой папки angular создайте одну папку с именем api и войдите в эту папку. Помните, что это будет совершенно отдельный от Angular проект. Таким образом, его node_modules отличаются от Angular .

Откройте терминал внутри  папки API  и введите следующую команду.

npm init -y

Установите следующие специфичные для узла модули.

npm install --save express body-parser cors mongoose

Я не перезапускаю сервер узла каждый раз; Я меняю файл. Итак, я устанавливаю сервер nodemon. Что он делает, так это то, что когда я изменяю файл server.js  , он автоматически перезапускает  сервер  node.js.

npm install nodemon --save-dev

Теперь внутри  папки API  создайте один файл с именем  server.js  .

// server.js

const express = require('express'),
    path = require('path'),
    bodyParser = require('body-parser'),
    cors = require('cors'),
    mongoose = require('mongoose');

    const app = express();
    let port = process.env.PORT || 4000;

    const server = app.listen(function(){
        console.log('Listening on port ' + port);
    });

Следующее, что нужно сделать, это подключить базу данных MongoDB к нашему приложению node.js.

Если вы не установили базу данных MongoDB, установите ее и запустите сервер mongodb.

Введите следующую команду, чтобы запустить   сервер MongoDB .

mongod

Итак, теперь я подключился к базе данных.

Создайте один файл с именем  DB.js  в  корневой папке проекта API  . Затем напишите следующий код в файле DB.js. 

// DB.js

module.exports = {
    DB: 'mongodb://localhost:27017/ng7crud'
 };

Импортируйте этот  файл DB.js  в наш  файл server.js и используйте  библиотеку mongoose  для настройки соединения  базы данных  с  MongoDB . Мы также можем использовать Mongoose для сохранения данных в базе данных с помощью Mongoose ORM.

Напишите следующий код в файле server.js  , чтобы подключить наше  приложение  MongoDB  к серверу Node.js. 

// server.js

const express = require('express'),
    path = require('path'),
    bodyParser = require('body-parser'),
    cors = require('cors'),
    mongoose = require('mongoose'),
    config = require('./DB');

    mongoose.Promise = global.Promise;
    mongoose.connect(config.DB, { useNewUrlParser: true }).then(
      () => {console.log('Database is connected') },
      err => { console.log('Can not connect to the database'+ err)}
    );

    const app = express();
    app.use(bodyParser.json());
    app.use(cors());
    const port = process.env.PORT || 4000;

    const server = app.listen(port, function(){
     console.log('Listening on port ' + port);
    });

Сохраните файл, перейдите в терминал и запустите сервер узла.

nodemon server

Итак, прямо сейчас у вас работают три сервера.

  1. Угловой сервер разработки
  2. нодемон сервер
  3. Сервер MongoDB

Помните, что все три сервера работают нормально, без каких-либо ошибок; иначе наше приложение не будет работать.

Шаг 13: Создайте модель и маршруты для нашего приложения.

Нам нужно создать две папки внутри корневой папки API с именами route и models .

В папке моделей  создайте одну модель с именем  Business.js.

// Business.js

const mongoose = require('mongoose');
const Schema = mongoose.Schema;

// Define collection and schema for Business
let Business = new Schema({
  person_name: {
    type: String
  },
  business_name: {
    type: String
  },
  business_gst_number: {
    type: Number
  }
},{
    collection: 'business'
});

module.exports = mongoose.model('Business', Business);

Итак, мы определили нашу схему для бизнес-коллекции. У нас есть три поля  с именами person_name, business_name, business_gst_number.

В  папке маршрутов  создайте один файл с именем business.route.js.

Напишите код CRUD в  файле business.route.js  .

// business.route.js

const express = require('express');
const app = express();
const businessRoutes = express.Router();

// Require Business model in our routes module
let Business = require('../models/Business');

// Defined store route
businessRoutes.route('/add').post(function (req, res) {
  let business = new Business(req.body);
  business.save()
    .then(business => {
      res.status(200).json({'business': 'business in added successfully'});
    })
    .catch(err => {
    res.status(400).send("unable to save to database");
    });
});

// Defined get data(index or listing) route
businessRoutes.route('/').get(function (req, res) {
    Business.find(function (err, businesses){
    if(err){
      console.log(err);
    }
    else {
      res.json(businesses);
    }
  });
});

// Defined edit route
businessRoutes.route('/edit/:id').get(function (req, res) {
  let id = req.params.id;
  Business.findById(id, function (err, business){
      res.json(business);
  });
});

//  Defined update route
businessRoutes.route('/update/:id').post(function (req, res) {
    Business.findById(req.params.id, function(err, next, business) {
    if (!business)
      return next(new Error('Could not load Document'));
    else {
        business.person_name = req.body.person_name;
        business.business_name = req.body.business_name;
        business.business_gst_number = req.body.business_gst_number;

        business.save().then(business => {
          res.json('Update complete');
      })
      .catch(err => {
            res.status(400).send("unable to update the database");
      });
    }
  });
});

// Defined delete | remove | destroy route
businessRoutes.route('/delete/:id').get(function (req, res) {
    Business.findByIdAndRemove({_id: req.params.id}, function(err, business){
        if(err) res.json(err);
        else res.json('Successfully removed');
    });
});

module.exports = businessRoutes;

Мы использовали модель мангуста для сохранения, обновления и удаления базы данных. Mongoose — это ORM , используемая в базе данных MongoDB . У нас настроены все операции CRUD в файле маршрута; нам нужно импортировать их в файл server.js  .

Итак, наш окончательный  файл server.js  выглядит так.

// server.js

const express = require('express'),
    path = require('path'),
    bodyParser = require('body-parser'),
    cors = require('cors'),
    mongoose = require('mongoose'),
    config = require('./DB');

const businessRoute = require('./routes/business.route');
mongoose.Promise = global.Promise;
mongoose.connect(config.DB, { useNewUrlParser: true }).then(
  () => {console.log('Database is connected') },
  err => { console.log('Can not connect to the database'+ err)}
);

const app = express();
app.use(bodyParser.json());
app.use(cors());
app.use('/business', businessRoute);
const port = process.env.PORT || 4000;

const server = app.listen(port, function(){
  console.log('Listening on port ' + port);
});

Шаг 14. Проверьте функциональность данных магазина

Если все серверы запущены и работают, вы можете зайти в браузер, заполнить данные формы и добавить бизнес. Вы можете увидеть что-то подобное на своем экране, если вы добились успеха.

Теперь мы можем проверить базу данных, используя следующие команды.

Сначала откройте оболочку монго на 4-й вкладке, потому что все остальные три вкладки в данный момент заняты.

mongo

Здесь мы видим, что значения хранятся в базе данных MongoDB. Да!! Нам это удалось.

Теперь оставшиеся операции — чтение, обновление и удаление.

15: Отображение данных на интерфейсе

В файле gst-get.component.html  напишите следующий код.

<table class="table table-hover">
  <thead>
  <tr>
      <td>Person Name</td>
      <td>Business Name</td>
      <td>GST Number</td>
      <td colspan="2">Actions</td>
  </tr>
  </thead>

  <tbody>
      <tr *ngFor="let business of businesses">
          <td>{{ business.person_name }}</td>
          <td>{{ business.business_name }}</td>
          <td>{{ business.business_gst_number }}</td>
          <td><a [routerLink]="['/edit', business._id]" class="btn btn-primary">Edit</a></td>
          <td><a [routerLink]="" class="btn btn-danger">Delete</a></td>
      </tr>
  </tbody>
</table>

Теперь внутри  файла business.service.ts  нам нужно написать функцию, извлекающую бизнес-данные из  базы данных MongoDB и отображающую их в приложении Angular .

// business.service.ts

getBusinesses() {
    return this
           .http
           .get(`${this.uri}`);
  }

Нам нужно включить этот файл business.service.ts  и файл Business.ts  в файл  gst-get.component.ts  .

Напишите следующий код в  файле gst-get.component.ts  .

// gst-get.component.ts

import { Component, OnInit } from '@angular/core';
import Business from '../Business';
import { BusinessService } from '../business.service';

@Component({
  selector: 'app-gst-get',
  templateUrl: './gst-get.component.html',
  styleUrls: ['./gst-get.component.css']
})
export class GstGetComponent implements OnInit {

  businesses: Business[];

  constructor(private bs: BusinessService) { }

  ngOnInit() {
    this.bs
      .getBusinesses()
      .subscribe((data: Business[]) => {
        this.businesses = data;
    });
  }
}

Сохраните файл, перейдите в браузер и перейдите по этому URL-адресу:  http://localhost:4200/business. Вы можете ознакомиться с перечнем предприятий.

16: Редактировать и обновлять данные

Хорошо, во-первых, нам нужно получить данные из базы данных MongoDB, используя _id, и отобразить эти данные в файле gst-edit.component.html  .

Итак, сначала напишите следующий код в  файле gst-edit.component.ts  .

// gst-edit.component.ts

import { Component, OnInit } from '@angular/core';
import { ActivatedRoute, Router } from '@angular/router';
import { FormGroup,  FormBuilder,  Validators } from '@angular/forms';
import { BusinessService } from '../business.service';

@Component({
  selector: 'app-gst-edit',
  templateUrl: './gst-edit.component.html',
  styleUrls: ['./gst-edit.component.css']
})
export class GstEditComponent implements OnInit {

  business: any = {};
  angForm: FormGroup;

  constructor(private route: ActivatedRoute,
    private router: Router,
    private bs: BusinessService,
    private fb: FormBuilder) {
      this.createForm();
 }

  createForm() {
    this.angForm = this.fb.group({
        person_name: ['', Validators.required ],
        business_name: ['', Validators.required ],
        business_gst_number: ['', Validators.required ]
      });
    }


  ngOnInit() {
    this.route.params.subscribe(params => {
        this.bs.editBusiness(params['id']).subscribe(res => {
          this.business = res;
      });
    });
  }
}

Здесь при  рендеринге gst-edit component.ts  он вызовет  метод ngOnInit  , отправит HTTP-запрос на сервер узла и извлечет данные из _id для отображения в  файле gst-edit.component.html  .

Теперь внутри  файла business.service.ts  нам нужно  закодировать функцию editBusiness  для отправки HTTP-запроса.

// business.service.ts

import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';

@Injectable({
  providedIn: 'root'
})
export class BusinessService {

  uri = 'http://localhost:4000/business';

  constructor(private http: HttpClient) { }

  addBusiness(person_name, business_name, business_gst_number) {
    const obj = {
      person_name: person_name,
      business_name: business_name,
      business_gst_number: business_gst_number
    };
    this.http.post(`${this.uri}/add`, obj)
        .subscribe(res => console.log('Done'));
  }

  getBusinesses() {
    return this
           .http
           .get(`${this.uri}`);
  }

  editBusiness(id) {
    return this
            .http
            .get(`${this.uri}/edit/${id}`);
    }
}

Наконец, нам нужно написать форму внутри файла gst-edit.component.html  .

<div class="card">
  <div class="card-body">
    <form [formGroup]="angForm" novalidate>
      <div class="form-group">
        <label class="col-md-4">Person Name</label>
        <input type="text" class="form-control" formControlName="person_name" #person_name [(ngModel)] = "business.person_name" />
      </div>
      <div *ngIf="angForm.controls['person_name'].invalid && (angForm.controls['person_name'].dirty || angForm.controls['person_name'].touched)" class="alert alert-danger">
        <div *ngIf="angForm.controls['person_name'].errors.required">
          Person Name is required.
        </div>
      </div>
      <div class="form-group">
        <label class="col-md-4">Business Name </label>
        <input type="text" class="form-control" formControlName="business_name" #business_name [(ngModel)] = "business.business_name" />
      </div>
      <div *ngIf="angForm.controls['business_name'].invalid && (angForm.controls['business_name'].dirty || angForm.controls['business_name'].touched)" class="alert alert-danger">
        <div *ngIf="angForm.controls['business_name'].errors.required">
          Person Business is required.
        </div>
      </div>
      <div class="form-group">
        <label class="col-md-4">Business GST Number </label>
        <input type="text" class="form-control" formControlName="business_gst_number" #business_gst_number [(ngModel)] = "business.business_gst_number" />
      </div>
      <div *ngIf="angForm.controls['business_gst_number'].invalid && (angForm.controls['business_gst_number'].dirty || angForm.controls['business_gst_number'].touched)" class="alert alert-danger">
        <div *ngIf="angForm.controls['business_gst_number'].errors.required">
          Business GST Number is required.
        </div>
      </div>
      <div class="form-group">
        <button (click)="updateBusiness(person_name.value, business_name.value, business_gst_number.value)"
        [disabled]="angForm.invalid" 
        class="btn btn-primary">Update Business</button>
      </div>
    </form>
  </div>
</div>

Сохраните файл, перейдите на страницу листинга, нажмите кнопку редактирования и увидите заполненную форму из базы данных.

Вы также можете увидеть предупреждение, как показано ниже. Не обращайте внимания на этот демонстрационный урок.

form.js:1193
Похоже, вы используете ngModel в том же поле формы, что и formControlName.
Поддержка использования входного свойства ngModel и события ngModelChange с
директивами реактивной формы устарела в Angular v6 и удалена
в Angular v7.

Теперь обновите данные. Внутри файла  business.service.ts  нам нужно написать функцию, которая обновляет данные.

// business.service.ts

updateBusiness(person_name, business_name, business_gst_number, id) {

    const obj = {
        person_name: person_name,
        business_name: business_name,
        business_gst_number: business_gst_number
      };
    this
      .http
      .post(`${this.uri}/update/${id}`, obj)
      .subscribe(res => console.log('Done'));
  }

Хорошо, теперь напишите  функцию updateBusiness()  в файле gst-edit.component.ts  .

// gst-edit.component.ts

updateBusiness(person_name, business_name, business_gst_number) {
   this.route.params.subscribe(params => {
      this.bs.updateBusiness(person_name, business_name, business_gst_number, params['id']);
      this.router.navigate(['business']);
});

Сохраните файл, и вы сможете обновить данные.

17: Удалить данные.

Итак, если вы не найдете ошибок в консоли, вы можете успешно обновить данные.

Я уже написал службу редактирования  и  обновления  для вызовов API. Итак, на данный момент создание, чтение, обновление  завершено в этом  примере Angular CRUD . Теперь взгляните на  Удалить .

Нам нужно определить событие нажатия на кнопку удаления в  файле gst-get.component.html  .

<tr *ngFor="let business of businesses">
          <td>{{ business.person_name }}</td>
          <td>{{ business.business_name }}</td>
          <td>{{ business.business_gst_number }}</td>
          <td><a [routerLink]="['edit', business._id]" class="btn btn-primary">Edit</a></td>
          <td><a (click) = "deleteBusiness(business._id)" class="btn btn-danger">Delete</a></td>
</tr>

Теперь напишите  функцию  deleteBusiness в  файле gst-get.component.ts  .

// gst-get.component.ts

deleteBusiness(id) {
    this.bs.deleteBusiness(id).subscribe(res => {
      console.log('Deleted');
    });
  }

Наконец, создайте функцию deleteBusiness()  в файле business.service.ts  .

// business.service.ts

deleteBusiness(id) {
    return this
              .http
              .get(`${this.uri}/delete/${id}`);
  }

Наконец, я завершил функцию удаления.

Итак, в этом уроке мы завершили функциональность CRUD в Angular.