I have a problem with using morphMany relations in combination with lists in my model. I do have a Meta model (morphMany) and a Resort model. The Resort model has a method metas() that just does this: return $this->morphMany('Meta', 'metable');

	public function metas()
	{
		return $this->morphMany('Meta', 'metable')->lists('value', 'key');
	}

Now what I want to have is a key/value list, just like I am able to do with hasMany: return $this->morphMany('Meta', 'metable')->lists('value', 'key'); But this doesn't work. If I use the same with hasMany on a different table, it works fine, so I assume there must be a difference between hasMany and morphMany in terms of the object structure.

The error I get is: Call to a member function addEagerConstraints() on a non-object [/­vendor/­laravel/­framework/­src/­Illuminate/­Database/­Eloquent/­Builder.php, Line 471] (Laravel 4.2.8)

I hope any of you can help me with this issue.

Thanks a lot in advance.