DBI Exception: DBD::Oracle::st execute failed: ORA-01400: cannot insert NULL into ("SDB2"."BOOKS"."ID") (DBD ERROR: OCIStmtExecute) [for Statement "INSERT INTO books (rating, title) VALUES (?, ?)" with ParamValues: :p1='5', :p2='TCPIP_Illustrated_Vol-2'] 

##</code><code>##

sub url_create : Local {
       my ($self, $c, $title, $rating, $author_id) = @_;

# Call create() on the book model object. Pass the table 
        # columns/field values we want to set as hash values
        my $book = $c->model('DB::Books')->create({
##</code><code>##

                title  => $title,
                rating => $rating
            });

}