Guide on accessing and manipulating local files using an Angular application

For my Angular 7 web app project, I'm looking to allow users to complete surveys and submit their responses. Since I don't have a database set up yet, I thought of storing the results in a local json file for now. Unfortunately, I'm facing difficulties trying to append to an existing local file without using Node.js 'fs' module (which doesn't work with Angular 6-7). Is there a workaround for this issue? It's not the ideal solution, but I plan on incorporating server-side and database functionality once the app is up and running.

angulartypescript

Answer №1

To save files, you can utilize the fileSaver library.

Follow these steps:

npm install file-saver --save

Next, create a declarations file in your project called 'declarations.d.ts' and add the following:

declare module 'file-saver';

In your systemjs.config.js file, include the following in the map section:

'file-saver': 'npm:file-saver/FileSaver.js'

Lastly, import the library in your component or service like so:

import { Component } from '@angular/core';
import * as saveAs from 'file-saver';


@Component({
  selector: 'my-app',
  template: `<h1>Hello {{name}}</h1>
  <button (click)="SaveDemo()">Save File</button>`,
})
export class AppComponent {
  name = 'Angular';

  SaveDemo() {
    let file = new Blob(['hello world'], { type: 'text/csv;charset=utf-8' });
    saveAs(file, 'helloworld.csv')
  }
}

Hopefully this information proves to be useful.

Answer №2

Angular is primarily designed for handling client-side tasks and does not have built-in capability to save files directly on the server side.

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