为什么我的代码显示这个错误:未定义变量

Question

我正在尝试迁移我的外键并以公司形式显示员工列表。:

1。我CompaniesController

public function index(){
$cat = Company::all();
return view(view:'company/index')->with ('cat', $cat);
}

2. 我的公司迁移显示:

   public function up() {
   Schema::create('company', function (Blueprint $table) {
   $table->id();
   $table->unsignedBigInteger('emp_id');
   $table->foreign('emp_id')->references('id')->on('employeee')->onUpdate('cascade')->onDelete('cascade');
   $table->string('companyname')->nullable();
   $table->string('connumber')->nullable();
   $table->string('addressline1')->nullable();
   $table->string('addressline2')->nullable();
   $table->string('contactnumber')->nullable();
   $table->string('suburb')->nullable();
   $table->string('state')->nullable();
   $table->string('postcode')->nullable();
   $table->string('image');
   $table->timestamps();
   });
   

   }

下面是下拉菜单

的代码

`<div class="col-md-6">
<select name="">
@foreach ($cat as $row )
<option value="{{$row->id}}">{{$row->companyname}}</option>
@endforeach
</select>
</div>`

这是公司的管理路由:

Route::resource('/admin/companies', 'AdminCompaniesController',['as'=>'admin']);

Please Help me out

Answer 1

// this is how to send the variable to the view
public function index(){
$cat = Company::all();
return view('company/index', ['cat'=>$cat]);
}
@foreach ($cat as $row)
<option value="{{$row->id}}">{{$row->companyname}}</option>
@endforeach

Answer 2

return view('company/index')->with('cat', $cat);

你可以试试。去掉括号中的view，去掉空格with('cat', $cat);。