1567736377
Angular 8 Node & Express JS File Upload
In this Angular 8 and Node.js tutorial, we are going to look at how to upload files on the Node server. To create Angular image upload component, we will be using Angular 8 front-end framework along with ng2-file-upload NPM package; It’s an easy to use Angular directives for uploading the files.
We are also going to take the help of Node.js to create the backend server for Image or File uploading demo. Initially, we’ll set up an Angular 8 web app from scratch using Angular CLI. You must have Node.js and Angular CLI installed in your system.
We’ll create the local server using Node.js and multer middleware. Multer is a node.js middleware for handling multipart/form-data, which is primarily used for uploading files. Once we are done setting up front-end and backend for our File uploading demo then, we’ll understand step by step how to configure file uploading in Angular 8 app using Node server.
Prerequisite
In order to show you Angular 8 File upload demo, you must have Node.js and Angular CLI installed in your system. If not then check out this tutorial: Set up Node JS
Run following command to install Angular CLI:
npm install @angular/cli -g
Install Angular 8 App
Run command to install Angular 8 project:
ng new angular-node-file-upload
# ? Would you like to add Angular routing? No
# ? Which stylesheet format would you like to use? CSS
cd angular-node-file-upload
Show Alert Messages When File Uploaded
We are going to install and configure ngx-toastr an NPM package which helps in showing the alert message when the file is uploaded on the node server.
npm install ngx-toastr --save
The ngx-toastr NPM module requires @angular/animations dependency:
npm install @angular/animations --save
Then, add the ngx-toastr CSS in angular.json file:
"styles": [
"src/styles.css",
"node_modules/ngx-toastr/toastr.css"
]
Import BrowserAnimationsModule and ToastrModule in app.module.ts file:
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { ToastrModule } from 'ngx-toastr';
@NgModule({
imports: [
CommonModule,
BrowserAnimationsModule, // required animations module
ToastrModule.forRoot() // ToastrModule added
]
})
export class AppModule { }
Install & Configure ng-file-upload Directive
In this step, we’ll Install and configure ng-file-upload library in Angular 8 app. Run command to install ng-file-upload library.
npm install ng2-file-upload
Once the ng2-file-upload directive is installed, then import the FileSelectDirective and FormsModule in app.module.ts. We need FormsModule service so that we can create the file uploading component in Angular.
import { FileSelectDirective } from 'ng2-file-upload';
import { FormsModule } from '@angular/forms';
@NgModule({
declarations: [
FileSelectDirective
],
imports: [
FormsModule
]
})
export class AppModule { }
Setting Up Node Backend for File Upload Demo
To upload the file on the server, we need to set up a separate backend. In this tutorial, we will be using Node & Express js to create server locally along with multer, express js, body-parser, and dotenv libraries.
Run command to create backend folder in Angular app’s root directory:
mkdir backend && cd backend
In the next step, create a specific package.json file.
npm init
Run command to install required dependencies:
npm install express cors body-parser multer dotenv --save
In order to get rid from starting the server again and again, install nodemon NPM package. Use –-save-dev along with the npm command to register in the devDependencies array. It will make it available for development purpose only.
npm install nodemon --save-dev
Have a look at final pacakge.json file for file upload demo backend:
{
"name": "angular-node-file-upload",
"version": "1.0.0",
"description": "Angualr 8 file upload demo app",
"main": "server.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"start": "node server.js"
},
"author": "Digamber Rawat",
"license": "ISC",
"dependencies": {
"body-parser": "^1.19.0",
"cors": "^2.8.5",
"dotenv": "^8.0.0",
"express": "^4.17.1",
"multer": "^1.4.1"
},
"devDependencies": {
"nodemon": "^1.19.1"
}
}
Create a file by the name of server.js inside backend folder:
Configure Server.js
To configure our backend we need to create a server.js file. In this file we’ll keep our backend server’s settings.
touch server.js
Now, paste the following code in backend > server.js file:
const express = require('express'),
path = require('path'),
cors = require('cors'),
multer = require('multer'),
bodyParser = require('body-parser');
// File upload settings
const PATH = './uploads';
let storage = multer.diskStorage({
destination: (req, file, cb) => {
cb(null, PATH);
},
filename: (req, file, cb) => {
cb(null, file.fieldname + '-' + Date.now())
}
});
let upload = multer({
storage: storage
});
// Express settings
const app = express();
app.use(cors());
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
extended: false
}));
app.get('/api', function (req, res) {
res.end('File catcher');
});
// POST File
app.post('/api/upload', upload.single('image'), function (req, res) {
if (!req.file) {
console.log("No file is available!");
return res.send({
success: false
});
} else {
console.log('File is available!');
return res.send({
success: true
})
}
});
// Create PORT
const PORT = process.env.PORT || 8080;
const server = app.listen(PORT, () => {
console.log('Connected to port ' + PORT)
})
// Find 404 and hand over to error handler
app.use((req, res, next) => {
next(createError(404));
});
// error handler
app.use(function (err, req, res, next) {
console.error(err.message);
if (!err.statusCode) err.statusCode = 500;
res.status(err.statusCode).send(err.message);
});
Now, while staying in the backend folder run the below command to start the backend server:
nodemon server.js
If everything goes fine then you’ll get the following output:
[nodemon] 1.19.1
[nodemon] to restart at any time, enter `rs`
[nodemon] watching: *.*
[nodemon] starting `node server.js`
Connected to port 8080
Create Angular 8 File Upload Component
In this last step, we are going to create a file upload component in Angular 8 app using Express js API.
Get into the app.component.ts file and include the following code:
import { Component, OnInit } from '@angular/core';
import { FileUploader } from 'ng2-file-upload/ng2-file-upload';
import { ToastrService } from 'ngx-toastr';
const URL = 'http://localhost:8080/api/upload';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit {
public uploader: FileUploader = new FileUploader({
url: URL,
itemAlias: 'image'
});
constructor(private toastr: ToastrService) { }
ngOnInit() {
this.uploader.onAfterAddingFile = (file) => {
file.withCredentials = false;
};
this.uploader.onCompleteItem = (item: any, status: any) => {
console.log('Uploaded File Details:', item);
this.toastr.success('File successfully uploaded!');
};
}
}
Go to app.component.html file and add the given below code:
<div class="wrapper">
<h2>Angular Image Upload Demo</h2>
<div class="file-upload">
<input type="file" name="image" ng2FileSelect [uploader]="uploader" accept="image/x-png,image/gif,image/jpeg" />
<button type="button" (click)="uploader.uploadAll()" [disabled]="!uploader.getNotUploadedItems().length">
Upload
</button>
</div>
</div>
Now, It’s time to start the Angular 8 app to check out the File upload demo in the browser. Run the following command:
ng serve --open
Make sure your NODE server must be running to manage the backend.
When you upload the image from front-end you’ll see your image files are saving inside the backend > uploads folder.
Conclusion
In this Angular 8 tutorial, we barely scratched the surface related to file uploading in a Node application. There are various other methods available on the internet through which you can achieve file uploading task quickly. However, this tutorial is suitable for beginners developers. I hope this tutorial will surely help and you if you liked this tutorial, please consider sharing it with others.
#angular #angular-js #node-js #express #web-development
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1567736377
Angular 8 Node & Express JS File Upload
In this Angular 8 and Node.js tutorial, we are going to look at how to upload files on the Node server. To create Angular image upload component, we will be using Angular 8 front-end framework along with ng2-file-upload NPM package; It’s an easy to use Angular directives for uploading the files.
We are also going to take the help of Node.js to create the backend server for Image or File uploading demo. Initially, we’ll set up an Angular 8 web app from scratch using Angular CLI. You must have Node.js and Angular CLI installed in your system.
We’ll create the local server using Node.js and multer middleware. Multer is a node.js middleware for handling multipart/form-data, which is primarily used for uploading files. Once we are done setting up front-end and backend for our File uploading demo then, we’ll understand step by step how to configure file uploading in Angular 8 app using Node server.
Prerequisite
In order to show you Angular 8 File upload demo, you must have Node.js and Angular CLI installed in your system. If not then check out this tutorial: Set up Node JS
Run following command to install Angular CLI:
npm install @angular/cli -g
Install Angular 8 App
Run command to install Angular 8 project:
ng new angular-node-file-upload
# ? Would you like to add Angular routing? No
# ? Which stylesheet format would you like to use? CSS
cd angular-node-file-upload
Show Alert Messages When File Uploaded
We are going to install and configure ngx-toastr an NPM package which helps in showing the alert message when the file is uploaded on the node server.
npm install ngx-toastr --save
The ngx-toastr NPM module requires @angular/animations dependency:
npm install @angular/animations --save
Then, add the ngx-toastr CSS in angular.json file:
"styles": [
"src/styles.css",
"node_modules/ngx-toastr/toastr.css"
]
Import BrowserAnimationsModule and ToastrModule in app.module.ts file:
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { ToastrModule } from 'ngx-toastr';
@NgModule({
imports: [
CommonModule,
BrowserAnimationsModule, // required animations module
ToastrModule.forRoot() // ToastrModule added
]
})
export class AppModule { }
Install & Configure ng-file-upload Directive
In this step, we’ll Install and configure ng-file-upload library in Angular 8 app. Run command to install ng-file-upload library.
npm install ng2-file-upload
Once the ng2-file-upload directive is installed, then import the FileSelectDirective and FormsModule in app.module.ts. We need FormsModule service so that we can create the file uploading component in Angular.
import { FileSelectDirective } from 'ng2-file-upload';
import { FormsModule } from '@angular/forms';
@NgModule({
declarations: [
FileSelectDirective
],
imports: [
FormsModule
]
})
export class AppModule { }
Setting Up Node Backend for File Upload Demo
To upload the file on the server, we need to set up a separate backend. In this tutorial, we will be using Node & Express js to create server locally along with multer, express js, body-parser, and dotenv libraries.
Run command to create backend folder in Angular app’s root directory:
mkdir backend && cd backend
In the next step, create a specific package.json file.
npm init
Run command to install required dependencies:
npm install express cors body-parser multer dotenv --save
In order to get rid from starting the server again and again, install nodemon NPM package. Use –-save-dev along with the npm command to register in the devDependencies array. It will make it available for development purpose only.
npm install nodemon --save-dev
Have a look at final pacakge.json file for file upload demo backend:
{
"name": "angular-node-file-upload",
"version": "1.0.0",
"description": "Angualr 8 file upload demo app",
"main": "server.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"start": "node server.js"
},
"author": "Digamber Rawat",
"license": "ISC",
"dependencies": {
"body-parser": "^1.19.0",
"cors": "^2.8.5",
"dotenv": "^8.0.0",
"express": "^4.17.1",
"multer": "^1.4.1"
},
"devDependencies": {
"nodemon": "^1.19.1"
}
}
Create a file by the name of server.js inside backend folder:
Configure Server.js
To configure our backend we need to create a server.js file. In this file we’ll keep our backend server’s settings.
touch server.js
Now, paste the following code in backend > server.js file:
const express = require('express'),
path = require('path'),
cors = require('cors'),
multer = require('multer'),
bodyParser = require('body-parser');
// File upload settings
const PATH = './uploads';
let storage = multer.diskStorage({
destination: (req, file, cb) => {
cb(null, PATH);
},
filename: (req, file, cb) => {
cb(null, file.fieldname + '-' + Date.now())
}
});
let upload = multer({
storage: storage
});
// Express settings
const app = express();
app.use(cors());
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
extended: false
}));
app.get('/api', function (req, res) {
res.end('File catcher');
});
// POST File
app.post('/api/upload', upload.single('image'), function (req, res) {
if (!req.file) {
console.log("No file is available!");
return res.send({
success: false
});
} else {
console.log('File is available!');
return res.send({
success: true
})
}
});
// Create PORT
const PORT = process.env.PORT || 8080;
const server = app.listen(PORT, () => {
console.log('Connected to port ' + PORT)
})
// Find 404 and hand over to error handler
app.use((req, res, next) => {
next(createError(404));
});
// error handler
app.use(function (err, req, res, next) {
console.error(err.message);
if (!err.statusCode) err.statusCode = 500;
res.status(err.statusCode).send(err.message);
});
Now, while staying in the backend folder run the below command to start the backend server:
nodemon server.js
If everything goes fine then you’ll get the following output:
[nodemon] 1.19.1
[nodemon] to restart at any time, enter `rs`
[nodemon] watching: *.*
[nodemon] starting `node server.js`
Connected to port 8080
Create Angular 8 File Upload Component
In this last step, we are going to create a file upload component in Angular 8 app using Express js API.
Get into the app.component.ts file and include the following code:
import { Component, OnInit } from '@angular/core';
import { FileUploader } from 'ng2-file-upload/ng2-file-upload';
import { ToastrService } from 'ngx-toastr';
const URL = 'http://localhost:8080/api/upload';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit {
public uploader: FileUploader = new FileUploader({
url: URL,
itemAlias: 'image'
});
constructor(private toastr: ToastrService) { }
ngOnInit() {
this.uploader.onAfterAddingFile = (file) => {
file.withCredentials = false;
};
this.uploader.onCompleteItem = (item: any, status: any) => {
console.log('Uploaded File Details:', item);
this.toastr.success('File successfully uploaded!');
};
}
}
Go to app.component.html file and add the given below code:
<div class="wrapper">
<h2>Angular Image Upload Demo</h2>
<div class="file-upload">
<input type="file" name="image" ng2FileSelect [uploader]="uploader" accept="image/x-png,image/gif,image/jpeg" />
<button type="button" (click)="uploader.uploadAll()" [disabled]="!uploader.getNotUploadedItems().length">
Upload
</button>
</div>
</div>
Now, It’s time to start the Angular 8 app to check out the File upload demo in the browser. Run the following command:
ng serve --open
Make sure your NODE server must be running to manage the backend.
When you upload the image from front-end you’ll see your image files are saving inside the backend > uploads folder.
Conclusion
In this Angular 8 tutorial, we barely scratched the surface related to file uploading in a Node application. There are various other methods available on the internet through which you can achieve file uploading task quickly. However, this tutorial is suitable for beginners developers. I hope this tutorial will surely help and you if you liked this tutorial, please consider sharing it with others.
#angular #angular-js #node-js #express #web-development
1616671994
Hire Dedicated Node.js Developers - Hire Node.js Developers
If you look at the backend technology used by today’s most popular apps there is one thing you would find common among them and that is the use of NodeJS Framework. Yes, the NodeJS framework is that effective and successful.
If you wish to have a strong backend for efficient app performance then have NodeJS at the backend.
WebClues Infotech offers different levels of experienced and expert professionals for your app development needs. So hire a dedicated NodeJS developer from WebClues Infotech with your experience requirement and expertise.
So what are you waiting for? Get your app developed with strong performance parameters from WebClues Infotech
For inquiry click here: https://www.webcluesinfotech.com/hire-nodejs-developer/
Book Free Interview: https://bit.ly/3dDShFg
#hire dedicated node.js developers #hire node.js developers #hire top dedicated node.js developers #hire node.js developers in usa & india #hire node js development company #hire the best node.js developers & programmers
1624601220
Drag and Drop File Upload Using Dropzone js in Laravel 8
Hello Friends,
In this tutorial i will show you Drag and Drop File Upload Using Dropzone js in Laravel 8 using dropzone.js. DropzoneJS is an open source library that provides drag and drop file uploads with image previews.
Read More : Drag and Drop File Upload Using Dropzone js in Laravel 8
https://websolutionstuff.com/post/drag-and-drop-file-upload-using-dropzone-js-in-laravel-8
Read Also : Google Recaptcha Example In Laravel
https://websolutionstuff.com/post/google-recaptcha-example-in-laravel
Read Also : Send Mail Example In Laravel 8
https://websolutionstuff.com/post/send-mail-example-in-laravel-8
#drag and drop file upload using dropzone js in laravel 8 #laravel 8 #file upload #dropzone js #drag and drop #multiple files upload
1622719015
Why use Node.js for Web Development? Benefits and Examples of Apps
Front-end web development has been overwhelmed by JavaScript highlights for quite a long time. Google, Facebook, Wikipedia, and most of all online pages use JS for customer side activities. As of late, it additionally made a shift to cross-platform mobile development as a main technology in React Native, Nativescript, Apache Cordova, and other crossover devices.
Throughout the most recent couple of years, Node.js moved to backend development as well. Designers need to utilize a similar tech stack for the whole web project without learning another language for server-side development. Node.js is a device that adjusts JS usefulness and syntax to the backend.
What is Node.js?
Node.js isn’t a language, or library, or system. It’s a runtime situation: commonly JavaScript needs a program to work, however Node.js makes appropriate settings for JS to run outside of the program. It’s based on a JavaScript V8 motor that can run in Chrome, different programs, or independently.
The extent of V8 is to change JS program situated code into machine code — so JS turns into a broadly useful language and can be perceived by servers. This is one of the advantages of utilizing Node.js in web application development: it expands the usefulness of JavaScript, permitting designers to coordinate the language with APIs, different languages, and outside libraries.
What Are the Advantages of Node.js Web Application Development?
Of late, organizations have been effectively changing from their backend tech stacks to Node.js. LinkedIn picked Node.js over Ruby on Rails since it took care of expanding responsibility better and decreased the quantity of servers by multiple times. PayPal and Netflix did something comparative, just they had a goal to change their design to microservices. We should investigate the motivations to pick Node.JS for web application development and when we are planning to hire node js developers.
Amazing Tech Stack for Web Development
The principal thing that makes Node.js a go-to environment for web development is its JavaScript legacy. It’s the most well known language right now with a great many free devices and a functioning local area. Node.js, because of its association with JS, immediately rose in ubiquity — presently it has in excess of 368 million downloads and a great many free tools in the bundle module.
Alongside prevalence, Node.js additionally acquired the fundamental JS benefits:
- quick execution and information preparing;
- exceptionally reusable code;
- the code is not difficult to learn, compose, read, and keep up;
- tremendous asset library, a huge number of free aides, and a functioning local area.
In addition, it’s a piece of a well known MEAN tech stack (the blend of MongoDB, Express.js, Angular, and Node.js — four tools that handle all vital parts of web application development).
Designers Can Utilize JavaScript for the Whole Undertaking
This is perhaps the most clear advantage of Node.js web application development. JavaScript is an unquestionable requirement for web development. Regardless of whether you construct a multi-page or single-page application, you need to know JS well. On the off chance that you are now OK with JavaScript, learning Node.js won’t be an issue. Grammar, fundamental usefulness, primary standards — every one of these things are comparable.
In the event that you have JS designers in your group, it will be simpler for them to learn JS-based Node than a totally new dialect. What’s more, the front-end and back-end codebase will be basically the same, simple to peruse, and keep up — in light of the fact that they are both JS-based.
A Quick Environment for Microservice Development
There’s another motivation behind why Node.js got famous so rapidly. The environment suits well the idea of microservice development (spilling stone monument usefulness into handfuls or many more modest administrations).
Microservices need to speak with one another rapidly — and Node.js is probably the quickest device in information handling. Among the fundamental Node.js benefits for programming development are its non-obstructing algorithms.
Node.js measures a few demands all at once without trusting that the first will be concluded. Many microservices can send messages to one another, and they will be gotten and addressed all the while.
Versatile Web Application Development
Node.js was worked in view of adaptability — its name really says it. The environment permits numerous hubs to run all the while and speak with one another. Here’s the reason Node.js adaptability is better than other web backend development arrangements.
Node.js has a module that is liable for load adjusting for each running CPU center. This is one of numerous Node.js module benefits: you can run various hubs all at once, and the environment will naturally adjust the responsibility.
Node.js permits even apportioning: you can part your application into various situations. You show various forms of the application to different clients, in light of their age, interests, area, language, and so on. This builds personalization and diminishes responsibility. Hub accomplishes this with kid measures — tasks that rapidly speak with one another and share a similar root.
What’s more, Node’s non-hindering solicitation handling framework adds to fast, letting applications measure a great many solicitations.
Control Stream Highlights
Numerous designers consider nonconcurrent to be one of the two impediments and benefits of Node.js web application development. In Node, at whatever point the capacity is executed, the code consequently sends a callback. As the quantity of capacities develops, so does the number of callbacks — and you end up in a circumstance known as the callback damnation.
In any case, Node.js offers an exit plan. You can utilize systems that will plan capacities and sort through callbacks. Systems will associate comparable capacities consequently — so you can track down an essential component via search or in an envelope. At that point, there’s no compelling reason to look through callbacks.
Final Words
So, these are some of the top benefits of Nodejs in web application development. This is how Nodejs is contributing a lot to the field of web application development.
I hope now you are totally aware of the whole process of how Nodejs is really important for your web project. If you are looking to hire a node js development company in India then I would suggest that you take a little consultancy too whenever you call.
Good Luck!
#node.js development company in india #node js development company #hire node js developers #hire node.js developers in india #node.js development services #node.js development
1602038680
Drag and Drop file upload using Dropzone in Laravel 8
Laravel 8 drag and drop multiple file upload dropzone js laravel 8 dropzone example. In this tutorial, you will learn, laravel 8 dropzone multiple files. OR understand the concept of laravel 8 dropzone image file upload.
And learn how to upload multiple image file without refresh or reload the whole web page using dropzone js in laravel 8 app.
Note that, Dropzone.js is a jquery plugin, dropzone.js through you can select one by one image and also with preview. After choose image from browse you can see preview of image. dropzone.js also provide filter like we can make validation for max upload, specific image or file extension etc.
In this example tutorial, we will create two routes, one for display dropzone image upload form view and another for store image file. Then, create two methods on DropzoneController.
Drag & Drop File Uploading using Laravel 8 Dropzone JS
Step 1 – Download Laravel 8 Application
Step 2 – Setup Database with App
Step 3 – Create Model & Migration
Step 4 – Create Routes
Step 5 – Generate Controller By Artisan Command
Step 6 – Create Blade View
Step 7 – Implement javascript Code for Dropzone Configuration
Step 8 – Create Images Directory inside Public Directory
Step 9 – Run Development Server
https://www.tutsmake.com/laravel-8-drag-and-drop-file-upload-using-dropzone-tutorial/
#dropzone multiple file upload laravel 8 #dropzone multiple image upload laravel 8 #multiple image upload with dropzone.js in laravel 8 #laravel 8 dropzone js multiple file upload