Boilerplate for ReactJS Apps in Front.band

React Boilerplate

Example project. We are using it as a start point for out applications or as a base for an education of our developers.

Commands

Command	Description
yarn dev	Run dev server
yarn production	Run production server
yarn lint	Check code with Eslint and Stylelint
yarn build	Build production
yarn stats	Run webpack statistic dashboard to analyze bundle size`
yarn locales:extract	Extract locales from the app into .pot file
yarn storybook	Run storybook
yarn test:acceptance	Run acceptance tests

Frontend Architecture

Project structure

• app - our application files. React JS app is here
• .storybook - storybook configuration files.
• bin - CI automation scripts
• cypress - acceptance tests
• docs - docs related documents, assets
• public - public static data, like favicon, robot.txt, that is not using in react js app and that doesn’t have to go thought webpack process
• webpack - webpack configuration parts

Application structure

Inside app folder:

• client - client’s entrypoint
• server - server’s entrypoint
• common - code, that is shared between client and server
• common/components - generic components. Core UI of our application. Elements, that can be publish and reused in other projects.
• common/containers/blocks - not generic components. specific for this project. API driven and can’t be re-used in other projects
• common/containers/forms - application’s forms
• common/containers/layouts - layouts
• common/containers/pages - pages
• common/helpers - helpers.
• common/locales - localization files and template
• common/redux - redux modules. reducers and actions are here
• common/routes - routes definitions.
• common/schemas - normalizr schemas.
• common/services - configuration of 3rd party modules and services
• common/store - configuration of redux store
• common/styles - shared styles, like variables

Code style

Eslint

We’re using eslint to keep js and jsx code style consistent. Check that your IDE is using Eslint file from this repo. Anyway, pre-commit hook is checking lint with our internal installed eslint version. So if your IDE is not showing you the errors, but you have them in pre-commit hook, re-check IDE :D

Atom

Add plugin linter-eslint. Go to the plugin’s configuration and enable option Fix errors on save

Stylelint

Stylelint is using to control the codestyle in style files. Configure your IDE to use config from this repo.

Git flow

• Stable branch - master
• Don’t push directly to the stable branch. Use PRs instead

Workflow:

1. Start a ticket with a new branch
2. Write code
3. Create Pull Request
4. Get an approve from one of your coworkers
5. Merge PR’s branch with the stable branch

Name of the branches

We are not following some strict rule on this stage of branch naming. So we have a single rule for the branch names:

1. Make you branch names meaningful.

Bad example

fix-1
redesign

Good example

fix-signals-table
new-user-profile-page

JIRA tickets

If you are using JIRA as a task manager, follow this naming convention

[type of ticket]/[number of branch]-[short-title]

feature/FRB-123-change-titles
fix/FRB-431-retina-images

Components

We are creating React application with component-approach. This means, what we try to decompose our UI into re-usable parts.

Try to make components PURE when it’s possible. Avoid using redux or inner state for components in app/common/components.

Base component contains next files:

• index.js - base component
• styles.scss - styles file
• index.story.js - storybook file

See the example component.

Recompose

Use recompose to create logic layout of your components. recompose allow us to split logic into multiple re-usable parts.

Storybook

Storybook is using as a UI library. We are using it as documentation for our UI. The goals are:

• help teammates to find the right component
• help to understand how to use the component
• avoid duplications

The rule is: write a story for all generic pure components and blocks and show all the existing variations.

Help your teammates understand from story how to use your component. Not just write the story of itself. Think about your colleagues.

Styling

Shortly about our styles:

• CSS modules
• PostCss with SCSS like style

We’re using scoped styles, so you don’t need to use BEM or other methodology to avoid conflicts in the styles. In BEM terminology, you don’t have to use elements. Use only block and modificators.

If you feel that you also need an element - think, probably you have to extract a new component from this template.

Bad example

.page {
  &__title {}
  &__content {
    &_active {}
  }
}

Good example

.root {} // root element
.title {}
.content {
  &.isActive {}
}

Use is prefix for the modificators.

Injecting styles to component

We are using isomorphic style loader to calculate critical CSS path. Use withStyles HOC to connect component and style. Use withStyles alias for import.

For example

import React from 'react';
import PropTypes from 'prop-types';
import withStyles from 'withStyles';
import { compose } from 'recompose';
import styles from './styles.scss';

const Poster = ({ src, title }) => (
  <div className={styles.root} style={{ backgroundImage: `url(${src})` }} alt={title} />
);

Poster.propTypes = {
  children: PropTypes.node,
};

export default compose(
  withStyles(styles)
)(Poster);

Prop names

Make names meaningful.

<Button d />

Good example

<Button disabled />

Make property for group of variants, not only of one specific case

Bad example

<Button red />
<Button blue />
<Button green />

Good example

<Button color="red" />
<Button color="blue" />
<Button color="green" />

Make property short

Bad example

<Button withLongValue />

Good example

<Button long />

Use on prefix for callbacks

Bad example

<Component change={someCallback} />

Good example

<Component onChange={someCallback} />

true if present

<Component black /> equals <Component black={ true } />

false if missed

<Component /> equals <Component black={ false } />

Usage

Use component fully as a block. Don’t make the components styles configurable outside. It has to have the deterministic number of possible variants.

Bad example

<Component className="newClassname" />

This is a chore. Passing classname or style from parent component can solve a problem easily in short terms, but in the future, you will be updating your components and you will not remember about this modification. so you will not test it. and it would be a bug.

Good example

<div className={styles.wrapper}>
  <Component disabled />
</div>

Redux

We are using redux as our global state manager in the app. Our base store structure is:

• data - data redux modules.
• form - connect redux-form
• routing - connect react-router-redux
• ui - reducers of UI components

Actions and reducers are stored in the same file. We are using redux-actions as a single way to create an action. See example.

Selectors

Selectors are stored in redux/index.js file. Basic set of data selectors contains next methods:

export const getMovie = (state, id) => denormalize(id, schemas.movie, state.data);

export const getMovies = (state, ids) => ids.map(id => getMovie(state, id));

export const getAllMovies = state => getMovies(state, Object.keys(state.data.movies));

Data

API

We are using redux-api-middleware to make the API calls. It’s use universal fetch internally.

Use method invoke to create API request actions.

Caching, Normalization

We use redux as a caching layer. Redux store contains data object, that has next structure

example

data: {
  movies: {
    1: {
      id: 1,
      name: 'The Shawshank Redemption'
    },
    2: {
      id: 2,
      name: 'The Godfather'
    },
  },
  directors: {
    1: {
      id: 1,
      name: 'Francis Ford Coppola'
    }
  }
}

So all the data entities are grouped by collection and is stored in map, there key is id of the entity and value is entity itself.

This structure allows us to easily find entity in store by id.

Each API request contains normalization of the response. Example.

To normalize data we are using normalizr package. Normalization schemas are store in schemas folder.

See an example of fetching and normalization of the data here.

Data usage on the pages

Use connect and selectors to get the store data on the page. Don’t store the data directly on the page. Store identifier and get the value by id, with selector instead.

For example,

export default compose(
  withStyles(styles),
  translate(),
  withRouter,
  provideHooks({
    fetch: ({ dispatch, params, setProps }) => dispatch(fetchMovie(params.id)).then((response) => {
      setProps({
        movieId: response.payload.result,
      });
    }),
  }),
  connect((state, ownProps) => ({
    movie: getMovie(state, ownProps.movieId),
  })),
)(MoviesDetailsPage);

After the fetch of the data we don’t store the whole object, but just the id of the movie and then we get whole object with getMovie selector. It allow us to be sure, that redux store is only one source of data in our applications. It helps to avoid many bugs.

Routing

1. You have to be able to load page information based only on the URL params.
2. Use the same URL as a main API endpoint of the page.

Page URL: /users
API request: get:/users

Page URL: /users/:id
API request: get:/users/:id

Page URL: /users/new
API request: post:/users

3. If you need to save the state of the page - use the URL query params. e.g /users?page=1, /users?q=John Doe
4. Make URLs meaningful

Fetching hooks

Pages and layouts are 2 places, there data can be fetched. WE don’t fetch the data into blocks. Only in the containers, that are used as a component in Routes, so they are URL driven.

To fetch the data on the page we are using redial + react-router-redial

hook	beforeTransition	afterTransition	client	server
fetch	+	-	+	+
defer	-	+	+	-
server	-	+	-	+
done	-	+	+	+

We’re additional passing dispatch and getState methods to the hooks, so you can access the store and dispatch an action.

Authorization

TODO

Testing

Acceptance testing

Cypress.io is used for E2E testing.

To run test, execute next command. You need server started and installed Chrome browser on your machine.

yarn test:acceptance

Tests are storing in cypress folder.

Unit testing

TODO. add jest to boilerplate

Visual regression testing

TODO. add argos CI to boilerplate

Localization

We are using gettext standard for our basic localization process.

Extract localization template

yarn locales:extract

This command will extract string for localization into locales/source.pot file.

Use Poedit to create lang files based on .pot file.

Localization is configured in common/services/i18next.js. Check the code to see how to import .po file with new language to the app.

Forms

We are using Redux-form as a single way to work with the forms.

Validation

We use per-form validation. For validation we are using react-nebo15-validate

Example

Add custom validation message

To add custom validation message, add it to ErrorMessages components. This component is used in Field components to show validation messages.

See the existing customization. Use this common in all places, when you need to display the error message based on error object.

3rd party services

Configuration of the 3rd party services is stored in common/services. See the example of i18next and validations configurations. They are separately connected to client and server entrypoints.

SSR

Node JS API

Configuration

Release & Deployment

Build tools

Download Details:

Author: FrontBand

Source Code: https://github.com/FrontBand/react-boilerplate

#react #reactjs #javascript

What is GEEK

Buddha Community

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

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

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.

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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

 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

 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

 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

http://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

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How long does it take to develop/build an app?

With more of us using smartphones, the popularity of mobile applications has exploded. In the digital era, the number of people looking for products and services online is growing rapidly. Smartphone owners look for mobile applications that give them quick access to companies’ products and services. As a result, mobile apps provide customers with a lot of benefits in just one device.

Likewise, companies use mobile apps to increase customer loyalty and improve their services. Mobile Developers are in high demand as companies use apps not only to create brand awareness but also to gather information. For that reason, mobile apps are used as tools to collect valuable data from customers to help companies improve their offer.

There are many types of mobile applications, each with its own advantages. For example, native apps perform better, while web apps don’t need to be customized for the platform or operating system (OS). Likewise, hybrid apps provide users with comfortable user experience. However, you may be wondering how long it takes to develop an app.

To give you an idea of how long the app development process takes, here’s a short guide.

App Idea & Research

_Average time spent: two to five weeks _

This is the initial stage and a crucial step in setting the project in the right direction. In this stage, you brainstorm ideas and select the best one. Apart from that, you’ll need to do some research to see if your idea is viable. Remember that coming up with an idea is easy; the hard part is to make it a reality.

All your ideas may seem viable, but you still have to run some tests to keep it as real as possible. For that reason, when Web Developers are building a web app, they analyze the available ideas to see which one is the best match for the targeted audience.

Targeting the right audience is crucial when you are developing an app. It saves time when shaping the app in the right direction as you have a clear set of objectives. Likewise, analyzing how the app affects the market is essential. During the research process, App Developers must gather information about potential competitors and threats. This helps the app owners develop strategies to tackle difficulties that come up after the launch.

The research process can take several weeks, but it determines how successful your app can be. For that reason, you must take your time to know all the weaknesses and strengths of the competitors, possible app strategies, and targeted audience.

The outcomes of this stage are app prototypes and the minimum feasible product.

#android app #frontend #ios app #minimum viable product (mvp) #mobile app development #web development #android app development #app development #app development for ios and android #app development process #ios and android app development #ios app development #stages in app development

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YuccaPrerenderBundle: Symfony2 Bundle to Use Prerender.io

Yucca/PrerenderBundle

Backbone, EmberJS, Angular and so more are your daily basis ? In case of an admin area, that's fine, but on your front office, you might encounter some SEO problems

Thanks to Prerender.io, you now can dynamically render your JavaScript pages in your server using PhantomJS.

This bundle is largely inspired by bakura10 work on zfr-prerender

Installation

Install the module by typing (or add it to your composer.json file):

$ php composer.phar require "yucca/prerender-bundle" "0.1.*@dev"

Register the bundle in app/AppKernel.php:

// app/AppKernel.php
public function registerBundles()
{
    return array(
        // ...
        new Yucca\PrerenderBundle\YuccaPrerenderBundle(),
    );
}

Enable the bundle's configuration in app/config/config.yml:

# app/config/config.yml
yucca_prerender: ~

Documentation

How it works

1. Check to make sure we should show a prerendered page
   1. Check if the request is from a crawler (agent string)
   2. Check to make sure we aren't requesting a resource (js, css, etc...)
   3. (optional) Check to make sure the url is in the whitelist
   4. (optional) Check to make sure the url isn't in the blacklist
2. Make a GET request to the prerender service (PhantomJS server) for the page's prerendered HTML
3. Return that HTML to the crawler

Customization

This bundle comes with a sane default, extracted from prerender-node middleware, but you can easily customize it:

#app/config/config.yml
yucca_prerender:
    ....

Prerender URL

By default, YuccaPrerenderBundle uses the Prerender.io service deployed at http://prerender.herokuapp.com. However, you may want to deploy it on your own server. To that extent, you can customize YuccaPrerenderBundle to use your server using the following configuration:

#app/config/config.yml
yucca_prerender:
    backend_url: http://localhost:3000

With this config, here is how YuccaPrerender will proxy the "https://google.com" request:

GET http://localhost:3000/https://google.com

Crawler user-agents

YuccaPrerender decides to pre-render based on the User-Agent string to check if a request comes from a bot or not. By default, those user agents are registered: 'baiduspider', 'facebookexternalhit', 'twitterbot'. Googlebot, Yahoo, and Bingbot should not be in this list because we support escaped_fragment instead of checking user agent for those crawlers. Your site must have to understand the '#!' ajax url notation.

You can add other User-Agent string to evaluate using this sample configuration:

#app/config/config.yml
yucca_prerender:
    crawler_user_agents: ['yandex', 'msnbot']

Ignored extensions

YuccaPrerender is configured by default to ignore all the requests for resources with those extensions: .js, .css, .less, .png, .jpg, .jpeg, .gif, .pdf, .doc, .txt, .zip, .mp3, .rar, .exe, .wmv, .doc, .avi, .ppt, .mpg, .mpeg, .tif, .wav, .mov, .psd, .ai, .xls, .mp4, .m4a, .swf, .dat, .dmg, .iso, .flv, .m4v, .torrent . Those are never pre-rendered.

You can add your own extensions using this sample configuration:

#app/config/config.yml
yucca_prerender:
    ignored_extensions: ['.less', '.pdf']

Whitelist

Whitelist a single url path or multiple url paths. Compares using regex, so be specific when possible. If a whitelist is supplied, only url's containing a whitelist path will be prerendered.

Here is a sample configuration that only pre-render URLs that contains "/users/":

#app/config/config.yml
yucca_prerender:
    whitelist_urls: ['/users/*']

Note: remember to specify URL here and not Symfony2 route names.

Blacklist

Blacklist a single url path or multiple url paths. Compares using regex, so be specific when possible. If a blacklist is supplied, all url's will be pre-rendered except ones containing a blacklist part. Please note that if the referer is part of the blacklist, it won't be pre-rendered too.

Here is a sample configuration that prerender all URLs excepting the ones that contains "/users/":

#app/config/config.yml
yucca_prerender:
    blacklist_urls: ['/users/*']

Note: remember to specify URL here and not Symfony22 route names.

Testing

If you want to make sure your pages are rendering correctly:

1. Open the Developer Tools in Chrome (Cmd + Atl + J)
2. Click the Settings gear in the bottom right corner.
3. Click "Overrides" on the left side of the settings panel.
4. Check the "User Agent" checkbox.
5. Choose "Other..." from the User Agent dropdown.
6. Type googlebot into the input box.
7. Refresh the page (make sure to keep the developer tools open).

Thanks

• Thanks to bakura10 for the Zend Framework version.
• Thanks to Romain Boyer to make me discover prerender.io
• Thanks to the prerender team and all JS MVC developpers

Author: rjanot
Source Code: https://github.com/rjanot/YuccaPrerenderBundle 
License: MIT License

#php #symfony