Here is the error while accessing url http://localhost:3000/books/url_create/TCPIP_Illustrated_Vol-2/5/4. 
DBI Exception: DBD::Oracle::st execute failed: ORA-01400: cannot inser
+t NULL into ("SDB2"."BOOKS"."ID") (DBD ERROR: OCIStmtExecute) [for St
+atement "INSERT INTO books (rating, title) VALUES (?, ?)" with ParamV
+alues: :p1='5', :p2='TCPIP_Illustrated_Vol-2']

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There is a way to bypass the error, assigning a value to id(Primary Key). Primary key is supposed to be self-increase, right ? 
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({

[download]

id => '10', 

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

}

[download]

In reply to Re^4: Catalyst: model & context object usage by marscld
in thread Catalyst: model & context object usage by marscld

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