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Getting Started with Angular

This integration guide follows the Quick Start Guide and assumes you have you have fully completed the "Hands-on" path. You should be able to consume the API by browsing the URL http://localhost:1337/api/restaurants.

If you haven't gone through the Quick Start Guide, the way you request a Strapi API with Angular remains the same except that you do not fetch the same content.

Create a Angular app​

Create a basic Angular application using angular CLI.

npx -p @angular/cli ng new angular-app

Use an HTTP client​

Many HTTP clients are available but in this documentation we'll use Axios and Fetch.

yarn add axios

GET Request your collection type​

Execute a GET request on the restaurant collection type in order to fetch all your restaurants.

Be sure that you activated the find permission for the restaurant collection type.

Example GET request with axios
import axios from 'axios';

axios.get('http://localhost:1337/api/restaurants').then(response => {
  console.log(response);
});
Example response
[
  {
    "id": 1,
    "name": "Biscotte Restaurant",
    "description": "Welcome to Biscotte restaurant! Restaurant Biscotte offers a cuisine based on fresh, quality products, often local, organic when possible, and always produced by passionate producers.",
    "created_by": {
      "id": 1,
      "firstname": "Paul",
      "lastname": "Bocuse",
      "username": null
    },
    "updated_by": {
      "id": 1,
      "firstname": "Paul",
      "lastname": "Bocuse",
      "username": null
    },
    "created_at": "2020-07-31T11:37:16.964Z",
    "updated_at": "2020-07-31T11:37:16.975Z",
    "categories": [
      {
        "id": 1,
        "name": "French Food",
        "created_by": 1,
        "updated_by": 1,
        "created_at": "2020-07-31T11:36:23.164Z",
        "updated_at": "2020-07-31T11:36:23.172Z"
      }
    ]
  }
]

Example​

./src/app/app.component.ts

import { Component, OnInit } from '@angular/core';
import axios from 'axios';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css'],
})
export class AppComponent implements OnInit {
  title = 'angular-app';
  restaurants = [];
  error = null;

  async ngOnInit() {
    try {
      const response = await axios.get('http://localhost:1337/api/restaurants');
      this.restaurants = response.data;
    } catch (error) {
      this.error = error;
    }
  }
}

./src/app/app.component.html

<div *ngIf="error">
  {{ error }}
</div>

<ul>
  <li *ngFor="let restaurant of restaurants">{{ restaurant['name'] }}</li>
</ul>

POST Request your collection type​

Execute a POST request on the restaurant collection type in order to create a restaurant.

Be sure that you activated the create permission for the restaurant collection type and the find permission fot the category collection type.

In this example a japanese category has been created which has the id: 3.

Example POST request with axios
import axios from 'axios';

axios
  .post('http://localhost:1337/api/restaurants', {
    name: 'Dolemon Sushi',
    description: 'Unmissable Japanese Sushi restaurant. The cheese and salmon makis are delicious',
    categories: [3],
  })
  .then(response => {
    console.log(response);
  });
Example response
{
  "id": 2,
  "name": "Dolemon Sushi",
  "description": "Unmissable Japanese Sushi restaurant. The cheese and salmon makis are delicious",
  "created_by": null,
  "updated_by": null,
  "created_at": "2020-08-04T09:57:11.669Z",
  "updated_at": "2020-08-04T09:57:11.669Z",
  "categories": [
    {
      "id": 3,
      "name": "Japanese",
      "created_by": 1,
      "updated_by": 1,
      "created_at": "2020-07-31T11:36:23.164Z",
      "updated_at": "2020-07-31T11:36:23.172Z"
    }
  ]
}

Example​

./src/app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';

import { AppComponent } from './app.component';

@NgModule({
  declarations: [AppComponent],
  imports: [BrowserModule, FormsModule, ReactiveFormsModule],
  providers: [],
  bootstrap: [AppComponent],
})
export class AppModule {}

./src/app/app.component.ts

import { Component, OnInit } from '@angular/core';
import { FormBuilder, FormArray, FormControl } from '@angular/forms';
import axios from 'axios'

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})

export class AppComponent implements OnInit {
  modifiedData;

  constructor(
    private formBuilder: FormBuilder,
  ) {
    this.modifiedData = this.formBuilder.group({
      name: '',
      description: '',
      categories: new FormArray([]),
    });
  }

  onCheckChange(event) {
    const formArray: FormArray = this.modifiedData.get('categories') as FormArray;

    if (event.target.checked) {
      formArray.push(new FormControl(event.target.value));
    }
    else {
      let i: number = 0;

      formArray.controls.forEach((ctrl: FormControl) => {
        if (ctrl.value == event.target.value) {
          formArray.removeAt(i);
          return;
        }
        i++;
      });
    }
  }

  title = 'angular-app';
  allCategories = [];
  error = null;

  async ngOnInit() {
    try {
      const response = await axios.get('http://localhost:1337/api/categories');
      this.allCategories = response.data
    } catch (error) {
      this.error = error
    }
    console.log(this.allCategories);
  }

  async onSubmit(restaurantData) {
    try {
      const response = await axios.post(
        'http://localhost:1337/api/restaurants',
        restaurantData
      );
      console.log(response);
    } catch (error) {
      this.error = error;
    }
    this.modifiedData.reset();
  }

}

./src/app/app.component.html

<div *ngIf="error">
  {{ error }}
</div>

<form [formGroup]="modifiedData" (ngSubmit)="onSubmit(modifiedData.value)">
  <div>
    <label for="name">
      Name
    </label>
    <input id="name" type="text" formControlName="name" />
  </div>

  <div>
    <label for="address">
      Description
    </label>
    <input id="description" type="text" formControlName="description" />
  </div>

  <div *ngIf="allCategories">
    <br />
    Select categories
    <div *ngFor="let category of allCategories">
      <label>{{ category.name }}</label>
      <input [value]="category.id" type="checkbox" (change)="onCheckChange($event)" />
    </div>
  </div>

  <button class="button" type="submit">Create</button>
</form>

PUT Request your collection type​

Execute a PUT request on the restaurant collection type in order to update the category of a restaurant.

Be sure that you activated the put permission for the restaurant collection type.

We consider that the id of your restaurant is 2. and the id of your category is 2.

Example PUT request with axios
import axios from 'axios';

axios
  .put('http://localhost:1337/api/restaurants/2', {
    categories: [2],
  })
  .then(response => {
    console.log(response);
  });
Example response
{
  "id": 2,
  "name": "Dolemon Sushi",
  "description": "Unmissable Japanese Sushi restaurant. The cheese and salmon makis are delicious",
  "created_by": null,
  "updated_by": null,
  "created_at": "2020-08-04T10:21:30.219Z",
  "updated_at": "2020-08-04T10:21:30.219Z",
  "categories": [
    {
      "id": 2,
      "name": "Brunch",
      "created_by": 1,
      "updated_by": 1,
      "created_at": "2020-08-04T10:24:26.901Z",
      "updated_at": "2020-08-04T10:24:26.911Z"
    }
  ]
}