Laravel中的ErrorException未定义变量
[英]ErrorException in Laravel Undefined variable
问题描述
I am new to Laravel and I am using Relations now, but I am getting an error as 
我是Laravel的新手，现在正在使用“关系”，但是由于
ErrorException :Undefined variable: users (View: D:\\Softwares\\WampServer\\www\\LaravelRelations\\resources\\views\\users\\index.blade.php)
Controller is in usersController.php 控制器位于 usersController.php
public function index()
{
$users = \App\User::all();
return view('users.index', compact($users));
}
Route is defined in web.php 路线在 web.php 定义
Route::resource('users', 'usersController');
Models are User.php and Role.php as 模型是 User.php 和 Role.php 作为
<?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 $this->hasMany('\App\User');
}
}
and here's the index.blade.php in users folder as 这是 用户文件夹中 的 index.blade.php
<!DOCTYPE html> <html> <head> <title></title> </head> <body> <ul> <?php foreach ($users as $user) { echo "<li>" . $user->username . "is" . $user->role->role_name; } ?> </ul> </body> </html>
The error is in this line foreach ($users as $user) { in $users variable 错误在此行中foreach ($users as $user) {在$users variable
2 个解决方案
解决方案1
4 已采纳 2018-07-03 15:47:59
Wrong part of your code is compact($users) It must be compact('users') . 代码的错误部分是compact($users)它必须是compact('users') 。 Fixed code is 固定代码为
public function index()
{
$users = \App\User::all();
return view('users.index', compact('users');
}
compact('users') is equivalent ['users' => $users] compact（'users'）是等效的['users'=> $ users]
解决方案2
1 2018-07-03 15:51:11
Try this 尝试这个
public function index()
{
$users = \App\User::all();
return view('users.index', ['users' => $users] );
}
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