How to define composite primary key using codeIgniter migrations?

Question

i convert my database to migrations successfully, except the following line:

 PRIMARY KEY (`key_id`,`user_id`);

Currently i doing it as:

$this->dbforge->add_key('key_id,user_id',TRUE);

but no Luck. gives the following Error:

 Error Number: 1072<p>Key column 'key_id,user_id' doesn't exist</p>

can anyone help? sorry for English Grammar and if i am not clear.

Answer 1

Thanks i found the solution my self:

$this->dbforge->add_key('key_id', TRUE);
$this->dbforge->add_key('user_id', TRUE);

here is the source link