Add {{stripe-elements}} contextual component

Author: lindyhopchris

README.md

@@ -65,15 +65,15 @@ ENV.stripe = {
 
 ### Mocking the Stripe API
 
-You can configure the Stripe API to be mocked instead of loaded from `https://js.stripe.com/v3/`. This is useful for testing. 
+You can configure the Stripe API to be mocked instead of loaded from `https://js.stripe.com/v3/`. This is useful for testing.
 
 ```js
 ENV.stripe = {
   mock: true
 };
 ```
 
-When enabled, a [mock Stripe object](https://github.com/code-corps/ember-stripe-elements/blob/develop/addon/utils/stripe-mock.js) will be assigned to `window.Stripe` when your app is initialized. 
+When enabled, a [mock Stripe object](https://github.com/code-corps/ember-stripe-elements/blob/develop/addon/utils/stripe-mock.js) will be assigned to `window.Stripe` when your app is initialized.
 
 When using the Stripe mock in tests you will likely need to override the mock's methods according to the needs of your test like so:
 
@@ -154,13 +154,54 @@ You could handle these actions yourself, for example:
 
 This addon gives you components that match the different [Element types](https://stripe.com/docs/elements/reference#element-types):
 
-- `{{stripe-card}}` - `card` (recommended) A flexible single-line input that collects all necessary card details.
-- `{{stripe-card-number}}` - `cardNumber` The card number.
-- `{{stripe-card-expiry}}` - `cardExpiry` The card's expiration date.
-- `{{stripe-card-cvc}}` - `cardCvc` The card's CVC number.
-- `{{stripe-postal-code}}` - `postalCode` the ZIP/postal code.
+Stripe recommend using the their `card` element - a flexible single-line input that collects all necessary card details.
+The `{{stripe-card}}` component provides this input.
 
-### Block usage with `options`
+Additionally Stripe provide the following elements, which you can use to build your own form to collect card details:
+
+- `cardNumber`: the card number.
+- `cardExpiry`: the card's expiration date.
+- `cardCvc`: the card's CVC number.
+- `postalCode`: the ZIP/postal code.
+
+These are provided via our `{{stripe-elements}}` contextual component, which yields sub-components for each element type:
+
+```hbs
+{{#stripe-elements as |elements|}}
+  {{elements.cardNumber}}
+  {{elements.cardExpiry}}
+  {{elements.cardCvc}}
+  {{elements.postalCode}}
+{{/stripe-elements}}
+```
+
+> The `{{stripe-elements}}` component is a tagless component, so does not have any classes etc on it.
+
+### Elements Options
+
+The `{{stripe-elements}}` contextual component ensures all the individual elements are created from
+the same [Stripe Elements object](https://stripe.com/docs/stripe-js/reference#the-elements-object).
+
+If you want to pass options to the Stripe Elements object, pass them to the `{{stripe-elements}}`
+contextual component. For example, when using the single-line `card` element:
+
+```hbs
+{{#stripe-elements options=elementOptions as |elements|}}
+  {{elements.card options=cardOptions}}
+{{/stripe-elements}}
+```
+
+Or when creating your own form:
+
+```hbs
+{{#stripe-elements options=elementsOptions as |elements|}}
+  {{elements.cardNumber options=cardNumberOptions}}
+  {{elements.cardExpiry}}
+  {{elements.cardCvc}}
+{{/stripe-elements}}
+```
+
+### Block usage with element `options`
 
 In addition to the simple usage above, like `{{stripe-card}}`, you can also yield to a block, which will yield both an `stripeError` object and [the `stripeElement` itself](https://stripe.com/docs/elements/reference#the-element).
 

addon/components/stripe-element.js

@@ -17,8 +17,15 @@ export default Component.extend({
   },
 
   stripev3: service(),
-  elements: computed(function() {
-    return get(this, 'stripev3.elements')();
+
+  elements: computed({
+    get() {
+      return get(this, 'stripev3.elements')();
+    },
+
+    set(key, value) {
+      return value;
+    }
   }),
 
   didInsertElement() {

addon/components/stripe-elements.js

@@ -0,0 +1,17 @@
+import Component from '@ember/component';
+import layout from '../templates/components/stripe-elements';
+import { inject as service } from '@ember/service';
+import { get, set } from '@ember/object';
+
+export default Component.extend({
+  stripe: service('stripev3'),
+  tagName: '',
+  layout,
+
+  init() {
+    this._super(...arguments);
+    let options = get(this, 'options') || {};
+    let elements = get(this, 'stripe').elements(options);
+    set(this, 'elements', elements);
+  }
+});

addon/templates/components/stripe-elements.hbs

@@ -0,0 +1,17 @@
+{{yield (hash
+  card=(component "stripe-card"
+    elements=elements
+  )
+  cardNumber=(component "stripe-card-number"
+    elements=elements
+  )
+  cardExpiry=(component "stripe-card-expiry"
+    elements=elements
+  )
+  cardCvc=(component "stripe-card-cvc"
+    elements=elements
+  )
+  postalCode=(component "stripe-postal-code"
+    elements=elements
+  )
+)}}

app/components/stripe-elements.js

@@ -0,0 +1 @@
+export { default } from 'ember-stripe-elements/components/stripe-elements';

tests/integration/components/stripe-elements-test.js

@@ -0,0 +1,48 @@
+import { module, test } from 'qunit';
+import { setupRenderingTest } from 'ember-qunit';
+import { render } from '@ember/test-helpers';
+import hbs from 'htmlbars-inline-precompile';
+import StripeMock from 'ember-stripe-elements/utils/stripe-mock';
+import StripeService from 'dummy/services/stripev3';
+import env from 'dummy/config/environment';
+
+module('Integration | Component | stripe-elements', function(hooks) {
+  setupRenderingTest(hooks);
+
+  hooks.beforeEach(function() {
+    window.Stripe = StripeMock;
+    const config = {
+      mock: true,
+      publishableKey: env.stripe.publishableKey,
+    };
+
+    this.owner.register(
+      'service:stripev3',
+      StripeService.create({ config }),
+      { instantiate: false }
+    );
+  });
+
+  test('it renders single-line element', async function (assert) {
+    assert.expect(0);
+
+    await render(hbs`
+      {{#stripe-elements as |elements|}}
+        {{elements.card}}
+      {{/stripe-elements}}
+    `);
+  });
+
+  test('it renders individual elements', async function (assert) {
+    assert.expect(0);
+
+    await render(hbs`
+      {{#stripe-elements as |elements|}}
+        {{elements.cardNumber}}
+        {{elements.cardExpiry}}
+        {{elements.cardCvc}}
+        {{elements.postalCode}}
+      {{/stripe-elements}}
+    `);
+  });
+});