laravel Livewire 电线：点击不触发功能

Posted 2023-02-22

【中文标题】laravel Livewire 电线：点击不触发功能

【英文标题】：laravel Livewire wire:click not firing the function

【发布时间】：2021-01-13 06:41:02

【问题描述】：

我想用 laravel livewire 做一个 SPA，我想使用 wire:click 来触发组件中的一个功能，但它不起作用，如果代码混乱，请原谅我第一次在这里发布，我不确定在这里发布我的代码以解决这些问题，谢谢

main.blade.php

@section('content')
<div>
    <div class="row justify-content-center">
        <div class="col-12">
            <div class="card my-3">

                        <!-- header -->
                <div class="card-header d-inline-flex">
                    <h3 class='mr-2'>Categories</h3>
                    <div>
                        <a href="javascript:void(0);" wire:click='createCategory' class="btn btn-success ">Add NewCategory</a>
                    </div>
                </div><!-- header -->
                <div class="card-body">

                    <!-- alerts -->
                    @include('admin.includes.alerts.errors')
                    @include('admin.includes.alerts.success')
                    <!-- alerts -->


                    <!-- if True , create form will show , if not will stay disabled -->
                    @if ($showCreateForm)
                    @livewire('admin.category.create' )
                    @endif
                    <!-- if True , create form will show , if not will stay disabled -->

                    <!-- Table -->
                    <div class="table-responsive">
                        <table id="example2" class="table table-bordered table-hover">
                            <thead>
                                <tr>
                                    <th>ID</th>
                                    <th>Image</th>
                                    <th>Name</th>
                                    <th>Slug</th>
                                    <th>Status</th>
                                    <th>Parent</th>
                                    <th>Action</th>
                                </tr>
                            </thead>
                            <tbody>
                                @foreach ($categories as $category)
                                <tr>
                                    <td>$category->id</td>
                                    -- <td>storage_path(app\livewire-tmp\$category->image)" /></td> --
                                    <td>$category->name</td>
                                    <td>$category->slug</td>
                                    <td class=" $category->isActive()==='Active'? 'text-success':'text-danger'">
                                        $category->isActive()</td>
                                    <td> !empty($category->parent) ? $category->parent->name:'' </td>
                                    <td>
                                        <a href="" class="btn btn-warning">Edit</a>
                                        <a href="" class="btn btn-danger">Delete</a>
                                    </td>
                                </tr>
                                @endforeach

                            </tbody>
                            <tfoot>
                                <tr>
                                    <th>ID</th>
                                    <th>Image</th>
                                    <th>Name</th>
                                    <th>Slug</th>
                                    <th>Status</th>
                                    <th>Parent</th>
                                    <th>Action</th>
                                </tr>
                            </tfoot>
                        </table>
                        <div>
                            !!$categories->links()!!
                        </div>
                    </div>
                    <!-- Table -->

                </div><!-- body -->
            </div>
        </div>
    </div>
</div>
@endsection

和组件 Main.php ，

<?php

namespace App\Http\Livewire\Admin\Category;

use App\Models\Admin\Category;
use Livewire\Component;
use Livewire\WithPagination;

class Main extends Component

    use WithPagination;

    protected $categories;
    public $showCreateForm = false;
    public $showEditForm = false;
    public function render()
    
        $categories = Category::orderBy('id','desc')->paginate(12);
        return view('livewire.admin.category.main',[
            'categories' => $categories,
        ]) ->layout('layouts.admin');
    

    public function createCategory()
    
         $this->showCreateForm = !$this->showCreateForm;
    
    public function update_Category($id)
    


         $categories = Category::whereId($id);
         if ($categories) 
            $this->emit('getCategoryid' , $categories);
            $this->showEditForm = !$this->showEditForm;
            $this->showCreateForm = false;
         
    
    public function delete_Category($id)
    
         $this->showCreateForm = !$this->showCreateForm;
    

////

更新

////

我尝试了 iRestWeb 答案，我认为它是正确的答案，但我什至不明白它 100% 与 javascript 相关的发生了什么，这不是我的专业领域，所以这是我的完整代码，希望有人能理解，再次抱歉，如果我的代码乱七八糟，麻烦你了，谢谢。

create.blade.php

<div>
  <form role="form" wire:submit.prevent="create" method="POST" enctype="multipart/form-data">
    @csrf
    <div class="card-body">
      <div class="row">
        <div class="col-6">
          <div class="form-group">
            <label for="exampleInputEmail1">Parent</label>
            <select type="select" class="form-control" id="exampleInputEmail1" wire:model="parent_id" name="parent_id">
              <option selected value> -- select an option -- </option>
              -- @if (is_array($categories) || is_object($categories) || !empty($categories)) -- @foreach ($categories as $category)
              <option value="$category->id">$category->name</option>
              @endforeach -- @endif --
            </select>
          </div>
        </div>
        <!-- 1 -->
        <div class="col-6">
          <div class="form-group">
            <label for="exampleInputPassword1">Category Name</label>
            <input type="text" class="form-control" id="exampleInputPassword1" placeholder="Name" wire:model="name" name="name"> @error('name') <span class="error text-danger"> $message </span> @enderror
          </div>
        </div>
        <!-- 2 -->
        <div class="col-6">
          <div class="form-group">
            <label for="exampleInputPassword1">Slug Name</label>
            <input type="text" class="form-control" id="exampleInputPassword1" placeholder="Name" wire:model="slug" name="slug"> @error('slug') <span class="error text-danger"> $message </span> @enderror
          </div>
        </div>
        <!-- 3 -->
        <div class="col-6">
          <div class="form-group">
            <label for="exampleFormControlFile1">Image</label>
            <input type="file" wire:model="image" class="form-control-file" id="exampleFormControlFile1" name="image"> @error('image') <span class="error text-danger"> $message </span> @enderror
          </div>

        </div>
        <!-- 4 -->
      </div>
      <div class="form-check">
        <input type="checkbox" class="form-check-input" id="exampleCheck1" wire:model="is_active" name="is_active">
        <label class="form-check-label" for="exampleCheck1">is Active</label> @error('is_active') <span class="error text-danger"> $message </span> @enderror
      </div>
    </div>
    <!-- /.card-body -->
    <div class="card-footer">
      <button type="submit" class="btn btn-primary">Submit</button>
    </div>
  </form>
</div>

创建.php

<?php

namespace App\Http\Livewire\Admin\Category;

use Livewire\Component;
use App\Models\Admin\Category;
use Livewire\WithFileUploads;
use Illuminate\Support\Str;
use Livewire\WithPagination;
use Intervention\Image\Facades\Image;



class Create extends Component



use WithFileUploads;
    use WithPagination;

    public $slug , $name , $image , $parent_id , $is_active;

    protected $rules = [
        'slug' => 'required|unique:categories,slug',
        'name' => 'required',
        'image'=> 'nullable|image|max:1024'
    ];

    protected $categories;
    public function render()
    
        $categories = Category::orderBy('id','desc')->paginate(12);
        return view('livewire.admin.category.create' , [
            'categories' => $categories,
        ]);
    
    public function create()
    
        $this->validate();

        $data = [
            'name' => $this->name,
            'slug' => $this->slug,
            'is_active'=> $this->is_active,
            'image'=> $this->image,
            'parent_id'=> $this->parent_id,
        ];
        //image upload
            try 
                if ($image = $this->image) 
                    $filename = Str::slug($this->name).'.'.$image->getClientOriginalExtension();
                    $path = public_path('assets/image/'.$filename);
                    Image::make($image->getRealPath())->save($path,100);
                
                Category::create($data);
                $this->reset();
                return $this->addError('success' , 'Created Successfuly');
             catch (\Throwable $th) 
                return $this->addError('error', 'Something Wrong Happens');
            

    

edit.blade.php

<div>
  <form role="form" method="POST" enctype="multipart/form-data" wire:submit.prevent="update">
    @csrf
    <div class="card-body">
      <div class="row">
        <div class="col-6">
          <div class="form-group">
            <label for="exampleInputEmail1">Parent</label>
            <select type="select" class="form-control" id="exampleInputEmail1" wire:model="parent_id" name="parent_id">
              <option></option>
              -- @if (is_array($categories) || is_object($categories) || !empty($categories)) -- @foreach ($categories as $category)
              <option value="$category->id">$category->name</option>
              @endforeach -- @endif --
            </select>
          </div>
        </div>
        <!-- 1 -->
        <div class="col-6">
          <div class="form-group">
            <label for="exampleInputPassword1">Category Name</label>
            <input type="text" class="form-control" id="exampleInputPassword1" placeholder="Name" wire:model="name" value='$category->name' name="name"> @error('name') <span class="error text-danger"> $message </span> @enderror
          </div>
        </div>
        <!-- 2 -->
        <div class="col-6">
          <div class="form-group">
            <label for="exampleInputPassword1">Slug Name</label>
            <input type="text" class="form-control" id="exampleInputPassword1" placeholder="Name" wire:model="slug" name="slug" value='$category->slug'> @error('slug') <span class="error text-danger"> $message </span> @enderror
          </div>
        </div>
        <!-- 3 -->
        <div class="col-6">
          <div class="form-group">
            <label for="exampleFormControlFile1">Image</label>
            <input type="file" class="form-control-file" id="exampleFormControlFile1" name="image">
            <img value='$category->image'  srcset=""> @error('image') <span class="error text-danger"> $message </span> @enderror
          </div>

        </div>
        <!-- 4 -->
      </div>
      <div class="form-check">
        <input type="checkbox" class="form-check-input" id="exampleCheck1" wire:model="is_active" name="is_active">
        <label class="form-check-label" for="exampleCheck1">is Active</label> @error('is_active') <span class="error text-danger"> $message </span> @enderror
      </div>
    </div>
    <!-- /.card-body -->
    <div class="card-footer">
      <button type="submit" class="btn btn-primary">Submit</button>
    </div>
  </form>
</div>

Edit.php（未完成的任务）

<?php

namespace App\Http\Livewire\Admin\Category;

use Livewire\Component;
use App\Models\Admin\Category;

class Edit extends Component

    protected $categories , $cat_id;
    public $slug , $name , $image , $old_image , $parent_id , $is_active;

    protected $listeners = ['getCategoryid'=>'getID'];


    public function mount()
    
       $this->categories = Category::whereId($this->cat_id)->first();
    //mout


    public function render()
    
        $categories = Category::all();
        return view('livewire.admin.category.edit' , [
            'categories' => $categories,
        ]);
    //render

    public function update($id)
    

    //update

    public function getID($categories)
    
        $this->categories = $categories;

        // Data
        $this->slug = $this->$categories['slug'];
        $this->name = $this->$categories['name'];
        $this->image = $this->$categories['image'];
        $this->old_image = $this->$categories['old_image'];
        $this->parent_id = $this->$categories['parent_id'];
        $this->is_active = $this->$categories['is_active'];

    //getID

【问题讨论】：

欢迎使用，不工作是什么意思，请详细说明正在显示的错误

卡头中的链接应该去运行 Main.php 组件中的函数，所以当我点击它时它不会做任何事情

你的控制台有错误吗？

网络没有任何反应，控制台也没有错误

检查网络标签，它发送任何东西吗？

【参考方案1】：

所有的 html 代码都应该用单个 <div>. 覆盖，这样它就可以工作了。

【讨论】：

你成就了我的一天！谢谢

完美运行，这是在文档中的某个地方吗？

哇，这也解决了我的问题 - 谢谢

兄弟，这是我一生中遇到的最愚蠢的问题，谢谢。

我浪费了几个小时试图让我的代码正常工作，这一切都是因为我在顶部放了一个

【参考方案2】：

在base.blade.php文件中添加liveWire的css和js就可以了：

<head>
...
    @livewireStyles
</head>
<body>
    ...

    @livewireScripts
</body>
</html>

【参考方案3】：

您不需要:click 事件来执行此操作，您可以简单地使用：

wire:$toggle('property')

而且你不需要使用a 标签；你可以简单地使用button 标签。所以你的按钮代码将如下所示：

<button type="button" wire:$toggle='showCreateForm' class="btn btn-success">Add New Category</button>

【讨论】：

感谢您的回复，我会尝试并确认它是否有效

它不起作用，伙计，我认为它的 javascript 是因为它根本不像禁用链接那样响应它很奇怪很奇怪

你是否包含了 livewire 的 css & js ？请提供页面的完整代码，包括布局页面

【参考方案4】：

我想这会对你有所帮助

<a href="#" wire:click.prevent="$toggle('showCreateForm')" class="btn btn-success">Add New Category</a>