[英]Laravel 5.4 relationship doesnt work cant attach second parameter
在我登录的用户与他想加入的活动之间建立联系时遇到了一些问题。 我实际上正在采取许多步骤来执行与角色用户相似的操作。 但是这里有一些问题,因为我的用户使用模型User, 事件使用模型HomeModel和其他3个模型建立关系并连接到表SaveEvent。 有我的代码。 我希望有人能告诉我该如何解决的,因为我浪费了2天来解决自己的问题:
型号首页
<?php namespace App; use Illuminate\\Database\\Eloquent\\Model; class HomeModel extends Model { protected $table = 'events'; // you may change this to your name table public $timestamps = true; // set true if you are using created_at and updated_at protected $primaryKey = 'id'; // the default is id /** * Is it an all day event? * * @return bool */ public function isAllDay() { return (bool)$this->day; } }
模型使用者
<?php namespace App; use Illuminate\\Notifications\\Notifiable; use Illuminate\\Foundation\\Auth\\User as Authenticatable; class User extends Authenticatable { use Notifiable; /** * The attributes that are mass assignable. * * @var array */ protected $fillable = [ 'lastname', 'name', 'phonenumber', 'email', 'password', 'user_id' , ]; /** * The attributes that should be hidden for arrays. * * @var array */ protected $hidden = [ 'password', 'remember_token', ]; public function roles() { return $this->belongsToMany('App\\Role', 'user_role', 'user_id', 'role_id'); } public function hasAnyRole($roles) { if (is_array($roles)) { foreach ($roles as $role) { if ($this->hasRole($role)) { return true; } } } else { if ($this->hasRole($roles)) { return true; } } return false; } public function hasRole($role) { if ($this->roles()->where('name', $role)->first()) { return true; } return false; } public function events() { return $this->belongsToMany('App\\SaveEvent')->withTimestamps(); } }
模型SaveEvent
<?php namespace App; use Illuminate\\Database\\Eloquent\\Model; class SaveEvent extends Model { public function users() { return $this->belongsToMany('App\\User'); } }
表对关系
+------------+------------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +------------+------------------+------+-----+---------+----------------+ | id | int(10) unsigned | NO | PRI | NULL | auto_increment | | created_at | timestamp | YES | | NULL | | | updated_at | timestamp | YES | | NULL | | | users_id | int(10) unsigned | NO | MUL | NULL | | | events_id | int(10) unsigned | NO | MUL | NULL | | +------------+------------------+------+-----+---------+----------------+
public function acceptEvent($id) { $events_id = HomeModel::find($id); $users_id = new SaveEvent; $users_id->users_id=Auth::id(); $users_id->save(); $users_id->events()->attach($events_id); return redirect()->back(); }
您不需要模型来保存events
。 因此,使用数据透视表是多对多关系。
在User
模型中更改event
方法,如下所示:
public function events()
{
return $this->belongsToMany(HomeModel::class,'PIVOT_TABLE_NAME','user_id','events_id');->withTimestamps();
}
并在HomeModel
:
public function users()
{
return $this->belongsToMany(User::class,'PIVOT_TABLE_NAME','events_id','user_id');
}
现在您可以使用$user->events->attach($events_id);
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