Laravel relationship with a pivot table - eloquent

Question

I have 3 tables:
Category ( id, name)
Category_Tournament (category_id, tournament_id) --> pivot table
Category_Tournament_User (category_id, tournament_id, user_id, confirmed)
Category is the list of available categories
Category_Tournament is the list of categories the admin configured
Category_tournament_User is the categories the user has registred
To get all categories in the tournament, I can do it easily with:
tournament->categories
defining a belongsToMany relationship in tournament model
What I don't know how to define relationship with the last table.
What I need is the user click on several categories, and I can run something like:
tournament->user_categories->sync($userCategories)
where I should sync table Category_Tournament_User ( with category_id, tournament_id, user_id)
What is the best way to achieve it???
EDIT:
Model Tournament:
class Tournament extends Model
{
protected $table = 'tournament';
public $timestamps = true;
protected $fillable = [
'name',
'date',
'type',
];
/**
* A tournament is owned by a user
*
* #return \Illuminate\Database\Eloquent\Relations\BelongsTo
*/
public function owner()
{
return $this->belongsTo('App\User', 'user_id','id');
}
/**
* #return \Illuminate\Database\Eloquent\Relations\HasMany
*/
public function categories()
{
return $this->belongsToMany('App\Category')
->withTimestamps();
}
}
Model Category
class Category extends Model
{
protected $table = 'category';
public $timestamps = true;
protected $fillable = [
'id',
'name',
];
public function tournaments()
{
return $this->belongsToMany('App\Tournament');
}
}
Model User:
class User extends Model implements AuthenticatableContract, CanResetPasswordContract
{
use Authenticatable, Authorizable, CanResetPassword, HasRole;
/**
* The database table used by the model.
*
* #var string
*/
protected $table = 'users';
/**
* The attributes that are mass assignable.
*
* #var array
*/
protected $fillable = ['name','firstname','lastname','email', 'password','avatar',country_id','role_id',,'provider','provider_id','verified'];
/**
* The attributes excluded from the model's JSON form.
*
* #var array
*/
protected $hidden = ['password', 'remember_token'];
/**
* Boot the model.
*
* #return void
*/
public static function boot()
{
parent::boot();
static::creating(function ($user) {
$user->token = str_random(30);
});
}
public function role()
{
return $this->belongsTo('App\Role');
}
public function settings()
{
return $this->hasOne('App\Settings');
}
public function invites()
{
return $this->hasMany('App\Invite', 'email','email');
}
public function country()
{
return $this->belongsTo('Webpatser\Countries\Countries');
}
/**
* A user can have many tournaments
*
* #return \Illuminate\Database\Eloquent\Relations\HasMany
*/
public function tournaments()
{
return $this->hasMany('App\Tournament');
}
}

Answer 1

You have many to many relationship here between User and Category_Tournament and you should take a look in documentation exactly at Many To Many.

Answer 2

I think you don't need to to have Category_Tournament_User table. and you can't make a Model for it in Laravel. you only need to a table user_tournament. and you should define relation(foreign key) on migration, like this:
Schema::create('user_tournament', function(Blueprint $table){
$table->engine = 'InnoDB';
$table->increments('id');
$table->integer('user_id')->unsigned();
$table->integer('tournament_id')->unsigned();
$table->unique(['tournament_id', 'user_id']);//You can omit this
$table->foreign('user_id')->references('id')->on('users')->onDelete('cascade')->onUpdate('cascade');
$table->foreign('tournament_id')->references('id')->on('tournaments')->onDelete('cascade')->onUpdate('cascade');
$table->nullableTimestamps();
});
then you can use this code:
user->tournaments->sync($userCategories);