morphtoMany not using specified morph key

So, I have an events table, where users can 'go' or be 'interested', and many users can go. (For this example, we'll just use it on the Events class.

So, I am specifying the morph like so:

/**
 * Get the user's events they're interested in
 *
 * @return builder
 */
public function interested($class = __CLASS__)
{
    return $this->morphToMany($class, 'owner', EventParticipants::table)
        ->wherePivot('status', '=', EventParticipants::INTERESTED)
        ->withPivot('owner_type', 'status', 'created_at');
}

Which is a trait inside my users model. I can have multiple statuses (going, interested..)

Now, my database structure is like so:

/**
 * Run the migrations.
 *
 * @return void
 */
public function up()
{
    Schema::create('event_participants', function (Blueprint $table) {
        $table->increments('id');
        $table->integer('user_id');            
        $table->integer('owner_id');
        $table->string('owner_type');
        $table->string('status')->default('pending')->comment('pending/going/interested');
        $table->timestamps();
    });
}

And my example data:

INSERT INTO `social`.`event_participants` 
    (`id`, 
    `user_id`, 
    `owner_type`, 
    `owner_id`, 
    `status`, 
    `created_at`, 
    `updated_at`) 
VALUES      
    ('14', 
    '9', 
    'App\\Modules\\Events\\Entities\\Events', 
    '1', 
    '2', 
    '2018-01-27 14:19:03', 
    '2018-01-27 14:19:03'); 

But the morph trait, is not using my specified owner key, from the documentation is specifies the class to morph, the key, and the table (optional)

relationships: https://laravel.com/docs/5.5/eloquent-relationships

how come my code isn't abiding by he rules? How can I fix this?

via Chebli Mohamed