Laravel is a popular PHP framework that greatly simplifies the development process of web applications. Laravel Cashier is a payment processing library that provides functionality for processing subscription payments. It can be integrated with Stripe to enable users to run applications with subscription capabilities. This article will introduce how to use Laravel Cashier to implement subscription payments.

1. Create a Stripe account

Before using Laravel Cashier, you need to create a Stripe account. Stripe is a cloud platform for processing online payments, and its API can be easily integrated with Laravel Cashier. Visit the Stripe website, create an account, and log in to the console. In the console, you can find the API key, which is the key information required to integrate Stripe in Laravel Cashier.

2. Install Laravel Cashier

Use Composer to install Laravel Cashier in your Laravel project. In the terminal, go to the root directory of the Laravel project and execute the following command:

composer require laravel/cashier

After executing the above command, Composer will automatically install the required dependencies and add Laravel Cashier to the project.

3. Configuring Laravel Cashier

After installing Laravel Cashier, you need to configure it to properly use the Stripe API. First, open the config/services.php file in your project and add the following code to the file:

'stripe' => [
    'model' => AppModelsUser::class,
    'key' => env('STRIPE_KEY'),
    'secret' => env('STRIPE_SECRET'),
],

The above code provides Laravel Cashier with the necessary configuration information, including the API key required to use Stripe and user models.

Then, configure the Stripe API key and Stripe Connect client ID in the .env file:

STRIPE_KEY=your-stripe-key
STRIPE_SECRET=your-stripe-secret
STRIPE_CLIENT_ID=your-stripe-client-id

4. Create a subscription plan

Integrate Stripe After the API, a subscription plan needs to be created for use in the application. In the Stripe console, navigate to the Products tab and click New Product to create a product. After creating the product, open the Billing tab and click New Plan to create a plan. Fill in the plan name, price and period as required, then click "Create Plan".

5. Update User Model

Laravel Cashier uses user models to manage subscriptions. So before proceeding, you need to include some methods in your user model. Open the user model and add the following code to the end of the file:

use LaravelCashierBillable;

class User extends Model implements AuthenticatableContract, CanResetPasswordContract
{
    use Authenticatable, CanResetPassword, Billable; 
}

The above code uses Laravel Cashier’s Billable trait in the user model. This allows using Laravel Cashier related methods in the user model.

6. Implementing the subscription function

It is very simple to implement the subscription function using Laravel Cashier. In the view, simply add the following form:

<form method="POST" action="{{ route('subscribe') }}">
    {{ csrf_field() }}
    <script
        src="https://checkout.stripe.com/checkout.js" class="stripe-button"
        data-key="{{ config('services.stripe.key') }}"
        data-amount="999"
        data-name="My Awesome Website"
        data-description="Monthly Subscription"
        data-image="https://stripe.com/img/documentation/checkout/marketplace.png"
        data-locale="auto">
    </script>
</form>

The above code adds a Stripe subscribe button to your website. When the user clicks the button, it will jump to the Stripe page to complete the subscription process.

In the controller, just add the following code to associate the subscription information with the user model:

public function subscribe(Request $request)
{
    $user = $request->user();
    $user->newSubscription('main', 'plan_id')->create($request->stripeToken);
    return redirect()->back();
}

The above code will create a new subscription and associate it with the user model , and store subscription payment information in Stripe. Then, redirect the user back to the page and continue running the application.

7. Unsubscribe

In Laravel Cashier, unsubscribing is very easy. Simply add the following code in your controller to cancel a specific subscription:

public function cancel(Request $request)
{
    $user = $request->user();
    $user->subscription('main')->cancel();
    return redirect()->back();
}

The above code will cancel a specific subscription and redirect the user back to the page.

Conclusion

Laravel Cashier is a powerful payment processing library that can greatly simplify the process of subscription payments. By using Stripe API, Laravel Cashier is able to easily integrate the subscription process into Laravel applications. Through the guidance of this article, you can easily use Laravel Cashier to implement subscription payment functions.

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