Laravel 5.4关系不起作用无法附加第二个参数

Question

I've got some problems making relationship between my user who is logged in and events that he wants to join work. I am really taking many steps to do something similar to what I do with role users. But here I have some problems, because my user uses model User, events uses model HomeModel and 3 other models to make a relation and connecte to table SaveEvent. There is my code. I hope someone can tell me how to figure it out because I wasted 2 days to resolve my problem:

Model HomeModel

 <?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; } } 

Model User

 <?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(); } } 

Model SaveEvent

 <?php namespace App; use Illuminate\\Database\\Eloquent\\Model; class SaveEvent extends Model { public function users() { return $this->belongsToMany('App\\User'); } } 

Table to relationship

 +------------+------------------+------+-----+---------+----------------+ | 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 | | +------------+------------------+------+-----+---------+----------------+ 

Controller ZapisController

  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(); } 

Answer 1

You don't need a model to save events . This is a many to many relationship with so use a pivot table.

Change event method in User model like this :

 public function events()
    {
        return $this->belongsToMany(HomeModel::class,'PIVOT_TABLE_NAME','user_id','events_id');->withTimestamps();
    }

and in HomeModel :

 public function users()
    {
        return $this->belongsToMany(User::class,'PIVOT_TABLE_NAME','events_id','user_id');
    }

now you can use $user->events->attach($events_id);