Missing Database Table, two models are joined and asking new table

I have 2 models - Issue and Publication But cakePHP is showing *Error: * Table *issue_publications* for model *IssuePublication* was not found in datasource *default* -- Like Us on FaceBook https://www.facebook.com/CakePHP Find us on Twitter http://twitter.com/CakePHP --- You received this mes

How to know the difference new post and updat post

Hi Guys. I have a edit form. When i make changes and click update its creating a new id and insert as new. I have 'c_id' in my table instead of 'id' Here is my code public function editContact( $c_id = null ) { //echo $c_id; if( !$c_id ) { throw new NotFoundException( __( 'Invalid Post' ) ); }