Question

您好，我想将多个变量传递给一个视图这是我的CategoryController.php

    public function site()
{
    $categories = Category::all();
    return view('template.sitemap', ['categories' => $categories]);
}

这是SubCategoryController.php

public function index2(){
    $subcategories =  SubCategory::all();
    return view('template.sitemap',['subcategories'=>$subcategories]);
}

这是我在web.php进行此操作的路线

Route::get('sitemap.html','CategoryController@site')->name('sitemap')
Route::get('sitemap.html','SubCategoryController@index2')->name('sitemap');

这是我正在尝试执行的视图sitemap.blade.php

   @foreach($categories as $category)
      <li><a href="category.html">{{$category->name}}</a></li>
      <ul>
       @foreach($subcategories as $subcategory)
         <li><a href="category.html">{{$subcategory->category_name->name}</li>
       @endforeach
      </ul>
  @endforeach

但是我经常看到未定义的变态他们一个人工作很好但是当我要用户两个变量都看到不确定的可变性时。

Answer 1

你可以写

public function site()
{
    $categories = Category::all();
    $subcategories =  SubCategory::all();
    return view('template.sitemap', compact('categories', 'subcategories');
}

或者您可以急于加载

public function site()
{
    $categories = Category::with('subcategories')->get();
    return view('template.sitemap', compact('categories');
}

可见

@foreach($categories as $category)
  <li><a href="category.html">{{$category->name}}</a></li>
<ul>
    @foreach($category->subcategories as $subcategory)
         <li><a href="category.html">{{$subcategory->name}}</li>
    @endforeach   
   </ul>
@endforeach

Answer 2

您的站点将转到第一个路由，并且永远不会转到第二个控制器。你应该写。

路线

 Route::get('sitemap.html','CategoryController@site')->name('sitemap');

控制器

  public function site(){
      $data =  array();
      $data['subcategories']  =  SubCategory::all();
      $data['categories']     =  Category::all();
      return view('template.sitemap',compact("data"));
   }

查看

    @foreach($data['categories'] as $category)
    <li><a href="category.html">{{$category->name}}</a></li>
    <ul>
       @foreach($data['subcategories'] as $subcategory)
       <li><a href="category.html">{{$subcategory->category_name->name}}</li>
       @endforeach
    </ul>
    @endforeach

在Laravel 5.6中将多个变量传递给一个视图

2 个答案: