laravel-5

Eloquent: Relationships 453
In addition to customizing the name of the joining table, you may also customize the column names
of the keys on the table by passing additional arguments to the belongsToMany method. The third
argument is the foreign key name of the model on which you are defining the relationship, while
the fourth argument is the foreign key name of the model that you are joining to:
.
1 return $this->belongsToMany('App\Role', 'user_roles', 'user_id', 'role_id');
Defining The Inverse Of The Relationship
To define the inverse of a many-to-many relationship, you simply place another call to belongsToMany
on your related model. To continue our user roles example, let’s define the users method on the
Role model:
.
1