问题描述
我的控制器中有这个,但它在我的 edit.blade 中不断出现我们的以下错误
错误异常 未定义变量:类别(视图:
命名空间 App\Http\Controllers;
使用 App\Models\Category; 使用 Illuminate\Http\Request;
class CategoryController 扩展控制器 { /** * 显示资源列表。 * * @return \Illuminate\Http\Response * */ 公共函数 __construct() {
}
public function index()
{
$categories = category::all();
return view('category.index',[$categories = 'category']);
}
/**
* Show the form for creating a new resource.
*
* @return \Illuminate\Http\Response
*/
public function create()
{
return view('category.create');
}
/**
* Store a newly created resource in storage.
*
* @param \Illuminate\Http\Request $request
* @return \Illuminate\Http\Response
*/
public function store(Request $request)
{
$this->validate($request,[
'name' => 'required'
]);
Category::create($request->all());
return redirect()->back()->with('success','Category Successfully Created');
}
/**
* display the specified resource.
*
* @param int $id
* @return \Illuminate\Http\Response
*/
public function show($id)
{
//
}
/**
* Show the form for editing the specified resource.
*
* @param int $id
* @return \Illuminate\Http\Response
*/
public function edit($id)
{
$category=category::find($id);
return view('category.edit',[$categories = 'category']);
}
/**
* Update the specified resource in storage.
*
* @param \Illuminate\Http\Request $request
* @param int $id
* @return \Illuminate\Http\Response
*/
public function update(Request $request,$id)
{
$this->validate($request,[
'name' => 'required',]);
$category=category::find($id);
$category->update();
return redirect()->route('category.index')
->with('success','Category updated successfully');
}
/**
* Remove the specified resource from storage.
*
* @param int $id
* @return \Illuminate\Http\Response
*/
public function destroy($id)
{
//
}
}
这是我的edit.blade
<input type="text" name="name" id="name" class="form-control @error('name') is-invalid @enderror" value="{{$category->name}}" placeholder="Category Name">
解决方法
像这样修复你的函数。我假设你的模型都是小写的
public function index()
{
$categories = category::all();
return view('category.index',['categories' => $categories]);
}
public function edit($id)
{
$category=category::find($id);
return view('category.edit',['category' => $category]);
}
哪个 categories 字符串是您在刀片文件中的变量,$categories 是来自控制器的变量
这是来自您的索引刀片文件的示例
@foreach ($categories as $category)
<input type="text" name="name" id="name" class="form-control @error('name') is-invalid @enderror" value="{{ $category->name }}" placeholder="Category Name">
@endforeach
这是用于编辑刀片文件
<input type="text" name="name" id="name" class="form-control @error('name') is-invalid @enderror" value="{{ $category->name }}" placeholder="Category Name">