帮助理解,有一个普通的模型用户,关键是role_id:
<?php
namespace App;
use Illuminate\Notifications\Notifiable;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Illuminate\Support\Facades\Auth;
class User extends Authenticatable
{
use Notifiable;
/**
* The attributes that are mass assignable.
*
* @var array
*/
protected $fillable = [
'name', 'email', 'password',
];
/**
* The attributes that should be hidden for arrays.
*
* @var array
*/
protected $hidden = [
'password', 'remember_token',
];
public function role()
{
return $this->hasOne('App\Role', 'id');
}
public function isManager()
{
return Auth::user()->role->name == 'manager';
}
public function isAdmin()
{
return Auth::user()->role->name == 'admin';
}
}
角色模型:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Role extends Model
{
public $timestamps = false;
protected $fillable = [
'name'
];
public function users()
{
return $this->hasMany('App\User');
}
}
用户迁移表:
public function up()
{
Schema::create('users', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->string('email')
->unique();
$table->string('password');
$table->rememberToken();
$table->integer('role_id')
->unsigned();
$table->timestamps();
});
Schema::table('users', function (Blueprint $table) {
$table->foreign('role_id')
->references('id')
->on('roles')
->onDelete('cascade');
});
}
现在问题的关键。当我试图获得所有经理时,只有第一个显示角色。控制器:
public function managersView()
{
$role = Role::where('name', 'manager')->first();
$managers = Role::find($role->id)->users;
return view('users.managers', [
'managers' => $managers
]);
}
查看:
@foreach ($managers as $manager)
<tr>
<td>{{ $manager->id }}</td>
<td>{{ $manager->name }}</td>
<td>{{ $manager->role }}</td>
<td>
<button class="btn btn-success"><span class="glyphicon glyphicon-pencil" aria-hidden="true"></span></button>
<button class="btn btn-warning"><span class="glyphicon glyphicon-trash" aria-hidden="true"></span></button>
</td>
</tr>
@endforeach
该表仅显示第一个用户的角色。请帮助理解什么是不正确的?
答案 0 :(得分:1)
我在模型设置方面遇到了一些问题。
在您的用户模型中,未正确设置外键。因为角色id存在于用户身上,所以它应该是belongsTo
关系。密钥也应该是role_id
,而不是id
。它应该看起来像:
public function role()
{
return $this->belongsTo('App\Role', 'role_id');
}
此外,您的角色检查方法应该引用当前模型,而不是当前授权的用户。无论您调用该方法的用户如何,您当前拥有该isManager()
的方式始终会返回相同的内容。
public function isManager()
{
return $this->role->name == 'manager';
}
public function isAdmin()
{
return $this->role->name == 'admin';
}
通过这种方式,您可以检查任何用户的角色,而不仅仅是当前用户。如果要检查当前用户的角色,请使用Auth::user()->isAdmin()
。
答案 1 :(得分:1)
您应该在UsersController上更改此行:
public function role()
{
return $this->hasOne('App\Role', 'id');
}
到
public function role()
{
return $this->belongsTo('App\Role', 'role_id');
}