ngx-stripe

Angular 2+ wrapper for StripeJS

Features

• Stripe Service
• Lazy script loading

Angular 6

There is a branch 6.x for development to make the library compatible with Angular 6, to give it a try, use the next tag:

$ npm install ngx-stripe@next --save

Installation

To install this library, run:

$ npm install ngx-stripe --save

Using the library

Import the NgxStripeModule into the application

The module takes the same parameters as the global Stripe object. The APIKey and the optional options to use Stripe connect

• apiKey: string
• options: { stripeAccount?: string; }

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';

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

// Import your library
import { NgxStripeModule } from 'ngx-stripe';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    NgxStripeModule.forRoot('***your-stripe-publishable key***'),
    LibraryModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

Stripe Service

Once imported, you can inject the StripeService anywhere you need. The stripe script will be loaded the first time the service is injected.

The stripe service exposes the same methods as the StripeJS instance but with typescript types. The API is based on Observables so it can be combined with other actions.

In the example below, the component mounts the card in the OnInit lifecycle. The buy button creates a Stripe token the could be sent to the server for further actions. In this example we just log that token to the console:

Example component (more HTML and CSS examples can be found at the Stripe Elements Examples):

<form novalidate (ngSubmit)="buy($event)" [formGroup]="stripeTest">
  <input type="text" formControlName="name" placeholder="Jane Doe">
  <div id="card-element" class="field"></div>
  <button type="submit">
    BUY
  </button>
</form>

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

import { StripeService, Elements, Element as StripeElement, ElementsOptions } from "ngx-stripe";

@Component({
  selector: 'app-stripe-test',
  templateUrl: 'stripe.html'
})
export class StripeTestComponent implements OnInit {
  elements: Elements;
  card: StripeElement;

  // optional parameters
  elementsOptions: ElementsOptions = {
    locale: 'es'
  };

  stripeTest: FormGroup;

  constructor(
    private fb: FormBuilder,
    private stripeService: StripeService) {}

  ngOnInit() {
    this.stripeTest = this.fb.group({
      name: ['', [Validators.required]]
    });
    this.stripeService.elements(this.elementsOptions)
      .subscribe(elements => {
        this.elements = elements;
        // Only mount the element the first time
        if (!this.card) {
          this.card = this.elements.create('card', {
            style: {
              base: {
                iconColor: '#666EE8',
                color: '#31325F',
                lineHeight: '40px',
                fontWeight: 300,
                fontFamily: '"Helvetica Neue", Helvetica, sans-serif',
                fontSize: '18px',
                '::placeholder': {
                  color: '#CFD7E0'
                }
              }
            }
          });
          this.card.mount('#card-element');
        }
      });
  }

  buy() {
    const name = this.stripeTest.get('name').value;
    this.stripeService
      .createToken(this.card, { name })
      .subscribe(result => {
        if (result.token) {
          // Use the token to create a charge or a customer
          // https://stripe.com/docs/charges
          console.log(result.token);
        } else if (result.error) {
          // Error creating the token
          console.log(result.error.message);
        }
      });
  }
}

StripeCardComponent

As an alternative to the previous example, you could use the StripeCardComponent.

It will make a little bit easier to mount the card.

To fetch the Stripe Element, you could you use either the (card) output, or, by using a ViewChild, the public method getCard()

//stripe.html

<form novalidate (ngSubmit)="buy($event)" [formGroup]="stripeTest">
  <input type="text" formControlName="name" placeholder="Jane Doe">
  <ngx-stripe-card [options]="cardOptions" [elementsOptions]="elementsOptions"></ngx-stripe-card>
  <button type="submit">
    BUY
  </button>
</form>

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

import { StripeService, StripeCardComponent, ElementOptions, ElementsOptions } from "ngx-stripe";

@Component({
  selector: 'app-stripe-test',
  templateUrl: 'stripe.html'
})
export class StripeTestComponent implements OnInit {
  @ViewChild(StripeCardComponent) card: StripeCardComponent;

  cardOptions: ElementOptions = {
    style: {
      base: {
        iconColor: '#666EE8',
        color: '#31325F',
        lineHeight: '40px',
        fontWeight: 300,
        fontFamily: '"Helvetica Neue", Helvetica, sans-serif',
        fontSize: '18px',
        '::placeholder': {
          color: '#CFD7E0'
        }
      }
    }
  };

  elementsOptions: ElementsOptions = {
    locale: 'es'
  };

  stripeTest: FormGroup;

  constructor(
    private fb: FormBuilder,
    private stripeService: StripeService) {}

  ngOnInit() {
    this.stripeTest = this.fb.group({
      name: ['', [Validators.required]]
    });
  }

  buy() {
    const name = this.stripeTest.get('name').value;
    this.stripeService
      .createToken(this.card.getCard(), { name })
      .subscribe(result => {
        if (result.token) {
          // Use the token to create a charge or a customer
          // https://stripe.com/docs/charges
          console.log(result.token.id);
        } else if (result.error) {
          // Error creating the token
          console.log(result.error.message);
        }
      });
  }
}

StripeFactoryService

If you get your stripe key in a lazy way, or if you need to work with more than one key, you can use this service.

If you don't know the key just call the forRoot method with no params:

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';

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

// Import your library
import { NgxStripeModule } from 'ngx-stripe';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    NgxStripeModule.forRoot(),
    LibraryModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

Then you can use the factory service to create stripe instances. The stripe instance has the same methods of old StripeService.

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

import { StripeInstance, StripeFactoryService } from "ngx-stripe";

@Component({
  selector: 'app-stripe-test',
  templateUrl: 'stripe.html'
})
export class StripeTestComponent implements OnInit {
  stripe: StripeInstance;

  constructor(
    private fb: FormBuilder,
    private stripeFactory: StripeFactoryService
  ) {}

  ngOnInit() {
    this.stripe = this.stripeFactory.create('***your-stripe-publishable key***');
  }
}

If you prefer to work the old StripeService, you can also update the key:

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

import { StripeService } from 'ngx-stripe';

@Component({
  selector: 'app-stripe-test',
  templateUrl: 'stripe.html'
})
export class StripeTestComponent implements OnInit {

  constructor(
    private fb: FormBuilder,
    private stripeSerivce: StripeService
  ) {}

  ngOnInit() {
    this.stripeService.setKey('***your-stripe-publishable key***');
  }
}

Stripe Instance and Stripe Reference

For situations where the module has any mistakes or missing methods (I'm aware it has) you can now access both your elements instance and a reference to Stripe:

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

import { StripeService } from 'ngx-stripe';

@Component({
  selector: 'app-stripe-test',
  templateUrl: 'stripe.html'
})
export class StripeTestComponent implements OnInit {

  constructor(
    private fb: FormBuilder,
    private stripeSerivce: StripeService
  ) {}

  ngOnInit() {
    // this is equivalent to window.Stipe, but it make sure the module is loaded
    const Stripe$: Observable<any> = this.stripeService.getStripeReference();

    // this is a reference to the stripe elements object
    const stripe = this.stripeService.getInstance();
  }
}

Testing

The following command runs unit & integration tests that are in the tests folder, and unit tests that are in src folder:

npm test 

Building

The following command:

npm run build

• starts TSLint with Codelyzer
• starts AoT compilation using ngc compiler
• creates dist folder with all the files of distribution

To test the npm package locally, use the following command:

npm run pack-lib

You can then run the following to install it in an app to test it:

npm install [path]to-library-[version].tgz

Publishing

npm run publish-lib

Documentation

To generate the documentation, this starter uses compodoc:

npm run compodoc
npm run compodoc-serve 

License

MIT © Ricardo Sánchez Gregorio