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Laravel development: How to use Laravel Cashier to implement subscription functionality?

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2023-06-13 13:34:371062browse

Laravel开发:如何使用Laravel Cashier实现订阅功能?

Laravel Cashier是一个易于使用的Stripe付款处理包,可以帮助我们在Laravel应用程序中实现订阅功能。在此教程中,我们将学习如何使用Laravel Cashier实现订阅功能。

步骤1:安装Laravel Cashier

在我们开始使用Laravel Cashier之前,需要安装它。在Laravel项目中运行以下命令来安装Laravel Cashier:

composer require laravel/cashier

步骤2:配置Stripe凭据

Laravel Cashier需要您配置Stripe凭据才能正常工作。如果您还没有Stripe账户,可以在https://stripe.com/上注册一个新账户。然后,登录到Stripe Dashboard,点击API选项卡,复制您的私钥并将其添加到.env文件中。

STRIPE_SECRET_KEY=your_stripe_secret_key
STRIPE_PUBLIC_KEY=your_stripe_public_key

步骤3:创建订阅计划

在我们实现订阅功能之前,我们需要在Stripe Dashboard中创建订阅计划。转到您的Stripe Dashboard并创建一个新的订阅计划。

在创建订阅计划时,请确保设置适当的金额,计费周期和试用期(如有需要)。

步骤4:创建Subscriber模型

Subscriber模型将继承Laravel Cashier的Billable Trait,并定义有关订阅的所有信息。通过执行以下命令在Laravel项目中创建Subscriber模型:

php artisan make:model Subscriber -m

此命令将创建一个Subscriber模型文件和一个迁移文件。

在迁移文件中,我们需要将Billable Trait添加到模型中。修改Subscriber模型迁移文件,如下所示:

<?php
use IlluminateDatabaseMigrationsMigration;
use IlluminateDatabaseSchemaBlueprint;
use IlluminateSupportFacadesSchema;
class CreateSubscribersTable extends Migration
{
    public function up()
    {
        Schema::create('subscribers', function (Blueprint $table) {
            $table->bigIncrements('id');
            $table->string('name');
            $table->string('email')->unique();
            $table->timestamp('email_verified_at')->nullable();
            $table->string('password');
            $table->rememberToken();
            $table->string('stripe_id')->nullable();
            $table->string('card_brand')->nullable();
            $table->string('card_last_four')->nullable();
            $table->timestamp('trial_ends_at')->nullable();
            $table->timestamps();
        });
        Schema::table('subscribers', function (Blueprint $table) {
            $table->softDeletes();
        });
    }
    public function down()
    {
        Schema::table('subscribers', function (Blueprint $table) {
            $table->dropSoftDeletes();
        });
        Schema::dropIfExists('subscribers');
    }
}

我们在Subscriber模型中添加了订阅所需的所有字段以及软删除支持。

步骤5:配置Laravel Cashier

在Subscriber模型中添加Laravel Cashier Trait,如下所示:

<?php
namespace App;
use IlluminateFoundationAuthUser as Authenticatable;
use IlluminateNotificationsNotifiable;
use IlluminateDatabaseEloquentSoftDeletes;
use LaravelCashierBillable;
class Subscriber extends Authenticatable
{
    use Notifiable, SoftDeletes, Billable;
    protected $dates = ['deleted_at'];
    protected $fillable = [
        'name', 'email', 'password',
    ];
    protected $hidden = [
        'password', 'remember_token',
    ];
    public function getStripeKeyName()
    {
        return 'stripe_id';
    }
}

在上面的代码中,我们添加了Billable Trait并指定了Stripe中的“stripe_id”。

步骤6:实现订阅功能

现在,我们已经配置好了Laravel Cashier并创建了Subscriber模型,我们可以开始使用Laravel Cashier来实现订阅功能。

在我们开始之前,我们需要确保用户已登录。我们将使用Laravel的Authentication功能来处理此步骤。

在web.php中添加以下路由:

Route::group(['middleware' => ['auth']], function () {
    Route::get('/subscribe', 'SubscriptionController@index')->name('subscribe.index');
    Route::post('/subscribe', 'SubscriptionController@store')->name('subscribe.store');
    Route::get('/subscribe/cancel', 'SubscriptionController@cancel')->name('subscribe.cancel');
    Route::get('/subscribe/resume', 'SubscriptionController@resume')->name('subscribe.resume');
    Route::get('/subscribe/invoice', 'SubscriptionController@invoice')->name('subscribe.invoice');
});

现在,我们需要添加一个SubscriptionController来处理我们的订阅功能。使用以下命令创建SubscriptionController:

php artisan make:controller SubscriptionController

在SubscriptionController中添加index方法,

<?php
namespace AppHttpControllers;
use IlluminateHttpRequest;
use LaravelCashierExceptionsIncompletePayment;
use Stripe{EphemeralKey, PaymentIntent, PaymentMethod};
class SubscriptionController extends Controller
{
    public function index(Request $request)
    {
        $intent = $request->user()->createSetupIntent();
        return view('subscription.index', [
            'intent' => $intent,
        ]);
    }
}

在上面的代码中,我们创建了一个Setup Intent用于收集用户的付款信息。然后,我们将此Setup Intent传递到视图中,并在用于订阅的表单中使用它。

在订阅表单中,我们可以使用Stripe.js来收集用户的付款信息。以下是一个基本的订阅表单示例:

@extends('layouts.app')
@section('content')
{!! Form::open(['route' => 'subscribe.store', 'class' => 'form-horizontal']) !!}
<div class="form-group row">
    <label for="name">{{ __('Plan') }}</label>
    <select name="plan" id="plan" class="form-control">
        <option value="price_123456">Basic Plan - $20/month</option>
        <option value="price_123457">Standard Plan - $50/month</option>
        <option value="price_123458">Premium Plan - $100/month</option>
    </select>
    <div id="card-element"></div>
</div>
<div class="form-group row">
    <div id="card-errors" class="mx-auto" role="alert"></div>
</div>
<div class="form-group row mb-0">
    <button type="submit" class="btn btn-primary">
        {{ __('Subscribe') }}
    </button>
</div>
{!! Form::close() !!}
<script src="https://js.stripe.com/v3/"></script>
<script>
    let stripe = Stripe('{{ env('STRIPE_PUBLIC_KEY') }}');
    let elements = stripe.elements();
    let card = elements.create('card', {
            hidePostalCode: true,
            style: {
            base: {
                iconColor: '#666EE8',
                color: '#31325F',
                lineHeight: '40px',
                fontWeight: 300,
                fontFamily: '"Helvetica Neue", Helvetica, sans-serif',
                fontSize: '15px',
                '::placeholder': {
                    color: '#CFD7E0',
                },
            },
            },
        }
    );
    card.mount('#card-element');
    let cardErrors = document.getElementById('card-errors');
        card.addEventListener('change', function(event) {
        if (event.error) {
            cardErrors.textContent = event.error.message;
        } else {
            cardErrors.textContent = '';
        }
    });
    let submitButton = document.querySelector('button[type=submit]');
    let form = document.querySelector('form');
    let clientSecret = null;
    submitButton.addEventListener('click', async function(ev) {
        ev.preventDefault();
        submitButton.disabled = true;
        let {setupIntent, error} = await stripe.confirmCardSetup(
            clientSecret, {
            payment_method: {
                card: card,
            }
        });
        if (error) {
            cardErrors.textContent = error.message;
            submitButton.disabled = false;
            return;
        }
        let paymentMethodId = setupIntent.payment_method;
        axios.post('{{ route('subscribe.store') }}', {
            plan: document.querySelector('#plan').value,
            payment_method: paymentMethodId,
            _token: '{{ csrf_token() }}'
        }).then(function(response) {
            window.location.href = response.data.success_url;
        }).catch(function(error) {
            submitButton.disabled = false;
        });
    });
    (async () => {
        let {setupIntent} = await axios.get('/api/create-setup-intent', {
            headers: {
                'X-CSRF-Token': document.head.querySelector('meta[name="csrf-token"]').content
            }
        }).then(response => response.data)
        clientSecret = setupIntent.client_secret;
    })();
</script>
@endsection

在上面的代码中,我们使用了Stripe.js来构建一个简单的订阅表单。我们通过使用Stripe.js中的create()方法创建一个card元素,然后将其挂载到#card-element div中。这里我们还使用了axios来处理POST请求,其中包含订阅计划信息和付款信息。如果付款被成功处理,我们将重定向用户到成功页面。

现在,我们需要添加存储用户付款信息和创建订阅逻辑的存储库。

<?php
namespace AppRepositories;
use AppSubscriber;
use IlluminateSupportFacadesConfig;
use LaravelCashierExceptionsPaymentActionRequired;
use LaravelCashierExceptionsPaymentFailure;
use LaravelCashierSubscription;
use StripeStripe;
class SubscriberRepository
{
    public function createFromRequest(array $data)
    {
        $subscriber = Subscriber::create([
            'name' => $data['name'],
            'email' => $data['email'],
            'password' => bcrypt($data['password']),
        ]);
        $subscriber->createAsStripeCustomer([
            'name' => $subscriber->name,
            'email' => $subscriber->email,
        ]);
        return $subscriber;
    }
    public function subscribe(Subscriber $subscriber, string $plan, string $paymentMethod)
    {
        $subscriber->newSubscription('main', $plan)->create($paymentMethod, [
            'email' => $subscriber->email,
        ]);
    }
}

在上面的代码中,我们创建了一个SubscriberRepository类,用于存储用户信息和创建订阅。在我们的createFromRequest()方法中,我们将创建一个新的Stripe Customer,然后将其相关信息存储到我们的Subscriber模型中。在subscribe()方法中,我们使用Laravel Cashier的newSubscription()函数来为用户创建新的订阅。

步骤7:处理订阅回调

在订阅回调中,我们需要更新用户订阅的当前状态。如果订阅被取消或期满,我们需要根据需要取消或恢复用户订阅。

在SubscriptionController中添加以下方法:

public function store(Request $request, SubscriberRepository $subscriberRepository)
{
    $paymentMethod = $request->input('payment_method');
    $plan = $request->input('plan');
    $subscriberRepository->subscribe(
        $request->user(),
        $plan,
        $paymentMethod
    );
    return response()->json([
        'success_url' => route('subscribe.invoice'),
    ]);
}
public function cancel(Request $request)
{
    $request->user()->subscription('main')->cancel();
    return redirect()->route('subscribe.index')
        ->with('success', 'Your subscription has been cancelled.');
}
public function resume(Request $request)
{
    $request->user()->subscription('main')->resume();
    return redirect()->route('subscribe.index')
        ->with('success', 'Your subscription has been resumed.');
}
public function invoice(Request $request)
{
    $invoice = $request->user()->invoices()->latest()->first();
    return view('subscription.invoice', [
        'invoice' => $invoice,
    ]);
}

在上面的代码中,我们处理了创建新的订阅,取消/恢复用户订阅,并显示订阅的最新发票。

现在,我们已经成功地使用Laravel Cashier实现了订阅功能,并可以让用户创建和管理其订阅了!

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