添加 Action 到 Livewire 组件

#设置 Livewire 组件

首先，生成新的 Livewire 组件：

php artisan make:livewire ManageProduct
php artisan make:livewire ManageProduct

然后，在页面中渲染 Livewire 组件：

@livewire('manage-product')
@livewire('manage-product')

或者，你可以使用全页 Livewire 组件：

use App\Livewire\ManageProduct;
use Illuminate\Support\Facades\Route;
 
Route::get('products/{product}/manage', ManageProduct::class);
use App\Livewire\ManageProduct;
use Illuminate\Support\Facades\Route;

Route::get('products/{product}/manage', ManageProduct::class);

你必须使用 InteractsWithActions 和 InteractsWithForms traits，并在你的 Livewire 组件类中实现 HasActions 和 HasForms 接口：

use Filament\Actions\Concerns\InteractsWithActions;
use Filament\Actions\Contracts\HasActions;
use Filament\Forms\Concerns\InteractsWithForms;
use Filament\Forms\Contracts\HasForms;
use Livewire\Component;
 
class ManagePost extends Component implements HasForms, HasActions
{
    use InteractsWithActions;
    use InteractsWithForms;
 
    // ...
}
use Filament\Actions\Concerns\InteractsWithActions;
use Filament\Actions\Contracts\HasActions;
use Filament\Forms\Concerns\InteractsWithForms;
use Filament\Forms\Contracts\HasForms;
use Livewire\Component;

class ManagePost extends Component implements HasForms, HasActions
{
    use InteractsWithActions;
    use InteractsWithForms;

    // ...
}

#添加 Action

添加一个返回 Action 的方法。该方法必须与 Action 的名称相同，或者在名称后面跟着 Action：

use App\Models\Post;
use Filament\Actions\Action;
use Filament\Actions\Concerns\InteractsWithActions;
use Filament\Actions\Contracts\HasActions;
use Filament\Forms\Concerns\InteractsWithForms;
use Filament\Forms\Contracts\HasForms;
use Livewire\Component;
 
class ManagePost extends Component implements HasForms, HasActions
{
    use InteractsWithActions;
    use InteractsWithForms;
 
    public Post $post;
 
    public function deleteAction(): Action
    {
        return Action::make('delete')
            ->requiresConfirmation()
            ->action(fn () => $this->post->delete());
    }
 
    // 此方法名也有效，因为该 Action 名为 `delete`:
    // public function delete(): Action
    
    // 此方法名无效，因为 Action 名为 `delete`，而非 `deletePost`:
    // public function deletePost(): Action
 
    // ...
}
use App\Models\Post;
use Filament\Actions\Action;
use Filament\Actions\Concerns\InteractsWithActions;
use Filament\Actions\Contracts\HasActions;
use Filament\Forms\Concerns\InteractsWithForms;
use Filament\Forms\Contracts\HasForms;
use Livewire\Component;

class ManagePost extends Component implements HasForms, HasActions
{
    use InteractsWithActions;
    use InteractsWithForms;

    public Post $post;

    public function deleteAction(): Action
    {
        return Action::make('delete')
            ->requiresConfirmation()
            ->action(fn () => $this->post->delete());
    }

    // 此方法名也有效，因为该 Action 名为 `delete`:
    // public function delete(): Action
    
    // 此方法名无效，因为 Action 名为 `delete`，而非 `deletePost`:
    // public function deletePost(): Action

    // ...
}

最后，你需要在视图中渲染 Action。为此，你需要 {{ $this->deleteAction }}，将 deleteAction 替换成你自己的 Action 方法名：

<div>
    {{ $this->deleteAction }}
 
    <x-filament-actions::modals />
</div>
<div>
    {{ $this->deleteAction }}

    <x-filament-actions::modals />
</div>

你也需要 <x-filament-actions::modals />，在其中注入所需的 HTML 来渲染 Action 模态框。这只需要在 Livewire 组件内引入一次，不论你对该组件有多少次操作。

#传递 Action 参数

有时，你可能希望传递参数到你的 Action 中。比如，如果你在同一个视图中渲染同一个 Action 多次，不过每次使用不同模型，你可以传入模型 ID 作为参数，然后稍后对其进行检索。为此，你可以在视图中调用该 Action，并传入以数组方式传入参数：

<div>
    @foreach ($posts as $post)
        <h2>{{ $post->title }}</h2>
 
        {{ ($this->deleteAction)(['post' => $post->id]) }}
    @endforeach
 
    <x-filament-actions::modals />
</div>
<div>
    @foreach ($posts as $post)
        <h2>{{ $post->title }}</h2>

        {{ ($this->deleteAction)(['post' => $post->id]) }}
    @endforeach

    <x-filament-actions::modals />
</div>

现在，你可以在 action 方法中访问该 post ID：

use App\Models\Post;
use Filament\Actions\Action;
 
public function deleteAction(): Action
{
    return Action::make('delete')
        ->requiresConfirmation()
        ->action(function (array $arguments) {
            $post = Post::find($arguments['post']);
 
            $post?->delete();
        });
}
use App\Models\Post;
use Filament\Actions\Action;

public function deleteAction(): Action
{
    return Action::make('delete')
        ->requiresConfirmation()
        ->action(function (array $arguments) {
            $post = Post::find($arguments['post']);

            $post?->delete();
        });
}

#在 Livewire 视图中隐藏 Action

如果使用 hidden() 或 visible() 控制 Action 是否渲染，应该此 Action 包装在 @if 中检测其是否可见(isVisible())：

<div>
    @if ($this->deleteAction->isVisible())
        {{ $this->deleteAction }}
    @endif
    
    {{-- Or --}}
    
    @if (($this->deleteAction)(['post' => $post->id])->isVisible())
        {{ ($this->deleteAction)(['post' => $post->id]) }}
    @endif
</div>
<div>
    @if ($this->deleteAction->isVisible())
        {{ $this->deleteAction }}
    @endif
    
    {{-- Or --}}
    
    @if (($this->deleteAction)(['post' => $post->id])->isVisible())
        {{ ($this->deleteAction)(['post' => $post->id]) }}
    @endif
</div>

hidden() 和 visable() 方法也控制着 Action 是否禁用 disabled，因此如果用户没有权限，它们仍然可以用来保护 Action 不被运行。将此逻辑封装在 Action 自己的 hidden() 或 visible() 中是一种很好的实践，否则你需要在视图和 disabled() 中定义条件。

你还可以利用这一点来隐藏任何在隐藏 Action 时可能不需要渲染的环绕元素：

<div>
    @if ($this->deleteAction->isVisible())
        <div>
            {{ $this->deleteAction }}
        </div>
    @endif
</div>
<div>
    @if ($this->deleteAction->isVisible())
        <div>
            {{ $this->deleteAction }}
        </div>
    @endif
</div>

#在 Livewire 视图中对 Action 进行分组

通过使用 <x-filament-actions::group> Blade 组件，传递 actions 数组作为属性，你可以将 Action 分组到一个下拉菜单：

<div>
    <x-filament-actions::group :actions="[
        $this->editAction,
        $this->viewAction,
        $this->deleteAction,
    ]" />
 
    <x-filament-actions::modals />
</div>
<div>
    <x-filament-actions::group :actions="[
        $this->editAction,
        $this->viewAction,
        $this->deleteAction,
    ]" />

    <x-filament-actions::modals />
</div>

你也可以传入任何属性去自定义触发按钮及下拉菜单的外观：

<div>
    <x-filament-actions::group
        :actions="[
            $this->editAction,
            $this->viewAction,
            $this->deleteAction,
        ]"
        label="Actions"
        icon="heroicon-m-ellipsis-vertical"
        color="primary"
        size="md"
        tooltip="More actions"
        dropdown-placement="bottom-start"
    />
 
    <x-filament-actions::modals />
</div>
<div>
    <x-filament-actions::group
        :actions="[
            $this->editAction,
            $this->viewAction,
            $this->deleteAction,
        ]"
        label="Actions"
        icon="heroicon-m-ellipsis-vertical"
        color="primary"
        size="md"
        tooltip="More actions"
        dropdown-placement="bottom-start"
    />

    <x-filament-actions::modals />
</div>

#修改 Action

通过调用 replaceMountedAction() 方法，你可以在当前 Action 执行完毕后，将其替换成其他 Action。这样，你就可以链式调用多个 Action：

use App\Models\Post;
use Filament\Actions\Action;
 
public function editAction(): Action
{
    return Action::make('edit')
        ->form([
            // ...
        ])
        // ...
        ->action(function (array $arguments) {
            $post = Post::find($arguments['post']);
 
            // ...
 
            $this->replaceMountedAction('publish', $arguments);        
        });
}
 
public function publishAction(): Action
{
    return Action::make('publish')
        ->requiresConfirmation()
        // ...
        ->action(function (array $arguments) {
            $post = Post::find($arguments['post']);
 
            $post->publish();
        });
}
use App\Models\Post;
use Filament\Actions\Action;

public function editAction(): Action
{
    return Action::make('edit')
        ->form([
            // ...
        ])
        // ...
        ->action(function (array $arguments) {
            $post = Post::find($arguments['post']);

            // ...

            $this->replaceMountedAction('publish', $arguments);        
        });
}

public function publishAction(): Action
{
    return Action::make('publish')
        ->requiresConfirmation()
        // ...
        ->action(function (array $arguments) {
            $post = Post::find($arguments['post']);

            $post->publish();
        });
}

现在，当第一个 Action 提交后，第二个 Action 会在第一个的地方打开。原本传递到第一个 Action 的参数将会传递到第二个 Action，这样你就可以使用它们在请求间持久化数据。

如果第一个 Action 取消了，第二个就不会打开。如果第二个取消，第一个已经运行过，就不能再取消。

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