Polymorphic relation

親子関係が複数ある関係
-> 親子関係って？ hasOne, hasManyなどが複数あるって意味？？

$ php artisan make:model Photo -m

Schema::create('photos', function (Blueprint $table) {
            $table->increments('id');
            $table->string('path');
            $table->integer('imageable_id');
            $table->string('imageable_type');
            $table->timestamps();
        });

$ php artisan migrate

class Photo extends Model
{
    //
    public function imageable(){

    	return $this->norphTo();
    }
}

public function photos(){
		return $this->norpMany('App\Photo', 'imageable');
	}

// Polymorphic relations
Route::get('user/photos', function(){
	$user = User::find(1);

	 foreach($user->photos as $photo){

	 	return $photo;

	 }
});

Route::get('photo/{id}/post', function($id){

	$photo = Photo::findOrFail($id);
	return $photo->imageable;
});