我想编辑记录，然后使用laravel更新它

Question

当我单击“编辑按钮”时，我试图编辑记录未使用laravel记录到输入字段中

有人知道如何解决吗？

我面临错误

属性[product_name]在此集合实例上不存在。 （查看：/home/sigmadel/public_html/resources/views/admin/product_update.blade.php）

Controller

          public function update_projects($products_id){           
          $category=DB::table('category')->get();
         $projects=DB::table('projects')->where('products_id','=',$products_id)->get();
         return view('admin/product_update',compact('category','projects'));    
          }

html视图

              <form   action="{{route('product.action')}}"   method="post"    >
              @csrf
              <div class="group-form">
              <select  class="form-control">
              <option > Update Category</option>
              @foreach($category as $categories)
             <option value="">{{$categories->category_name}}</option>       
             @endforeach
             </select>
             </div>
             <br>
             <div class="group-form">
             <input type="text" class="form-control" value="{{$projects->product_name}}" 
             placeholder="Update Product Name" name="product_name" >  
             </div>
             <br>
             <div class="group-form">
             <input type="file" class="form-control"  name="select_file" >      
            </div>
           <br>
          <div class="group-form">
          <input type="submit" class=" btn btn-primary form-control" value="UPDATE"  name="Update" >  
          </div>
         </form>

     <a class="btn btn-success" href="{{route('product.update',$projects->products_id)}}">Edit</a>

路线

   Route::get('view_projects','AdminController@view_projects');
   Route::get('product_update/{products_id}/edit','AdminController@update_projects')- 
     >name('product.update');

Answer 1

您一直做错了。您正在使用get()时获得收集，但尝试将其用作对象。这样做。

路线：

Route::get('project_edit/{id}/edit','AdminController@edit_project')- 
     >name('project.edit');
Route::post('project_update/{id}/update','AdminController@update_project')- 
     >name('project.update');

控制器编辑功能：

public function edit_project($id){           
    $categories=DB::table('category')->get();
    $project=DB::table('projects')->where('products_id','=',$id)->first();
    return view('admin/product_update',compact('categories','project'));    
}

编辑刀片：

<form action="{{route('project.update', $project->id)}}" method="POST">
    @csrf
    <div class="group-form">
        <select  class="form-control">
            <option value="">Select Category</option>
            @foreach($categories as $category)
            <option value="{{$category->id}}" @if($project->category_id) == $category->id) selected @endif>{{$category->category_name}}</option>       
            @endforeach
        </select>
    </div>
    <br>
    <div class="group-form">
        <input type="text" class="form-control" value="{{$project->product_name}}" 
             placeholder="Update Product Name" name="product_name" >  
    </div>
    <br>
    <div class="group-form">
        <input type="file" class="form-control"  name="select_file" >      
    </div>
    <br>
    <div class="group-form">
        <input type="submit" class=" btn btn-primary form-control" value="UPDATE"  name="Update" >  
    </div>
</form>

最后是控制器中的更新功能：

public function update_project(Request $request, $id){           
    //validation and update process    
}

这里项目和产品混合不好，所以请根据您的结构进行更改。