Change default primary key in Eloquent

Question

Can I change Eloquent model primary key.

I want to set primary key for example admin_id instead of 'id'?

I know I can change table name for model like

protected $table = "admin"; 

Is there something similar for primary key?

Answer 1

Yes

class User extends Eloquent {      protected $primaryKey = 'admin_id';  } 

Answer 2

If you are wanting to use a composite key (a string)

You need to make sure you set public $incrementing = false otherwise laravel will cast the field to an Integer, giving 0

class User extends Model {      protected $primaryKey = 'my_string_key';     public $incrementing = false;  }