Laravel中的ErrorException未定义变量 [英] ErrorException in Laravel Undefined variable
本文介绍了Laravel中的ErrorException未定义变量的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我是Laravel的新手,现在正在使用关系",但由于
I am new to Laravel and I am using Relations now, but I am getting an error as
ErrorException:未定义的变量:用户(视图:D:\ Softwares \ WampServer \ www \ LaravelRelations \ resources \ views \ users \ index.blade.php)
ErrorException :Undefined variable: users (View: D:\Softwares\WampServer\www\LaravelRelations\resources\views\users\index.blade.php)
控制器在中usersController.php
public function index()
{
$users = \App\User::all();
return view('users.index', compact($users));
}
路由是在 web.php
Route::resource('users', 'usersController');
模型是 User.php
和 Role.php
为
<?php
//User.php
namespace App;
use Illuminate\Database\Eloquent\Model;
class User extends Model
{
public function role() {
return $this->belongsTo('\App\Role');
}
}
<?php
//Role.php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Role extends Model
{
public function user() {
return $this->hasMany('\App\User');
}
}
,这是用户文件夹中的 index.blade.php
,
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<ul>
<?php
foreach ($users as $user) {
echo "<li>" . $user->username . "is" . $user->role->role_name;
}
?>
</ul>
</body>
</html>
错误在$users variable
推荐答案
错误的代码部分是compact($users)
,它必须是compact('users')
.固定代码为
Wrong part of your code is compact($users)
It must be compact('users')
. Fixed code is
public function index()
{
$users = \App\User::all();
return view('users.index', compact('users');
}
compact('users')是等效的 ['users'=> $ users]
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