Re: [Catalyst] Catalyst / DBIx Class Relationship many_to_many problem
J. Shirley wrote: This is actually a DBIx::Class issue and not Catalyst, but the answer to your problem is to simply enable quoting. Since 'user' is a reserved word, you must quote it. See this section in the DBIx::Class cookbook: http://search.cpan.org/~ash/DBIx-Class-0.08010/lib/DBIx/Class/Manual/Cookbook.pod#Setting_quoting_for_the_generated_SQL. That works perfectly! A lot of thanks for fast support. Jakub Tutaj -- View this message in context: http://www.nabble.com/Catalyst---DBIx-Class-Relationship-many_to_many-problem-tp21775313p21797190.html Sent from the Catalyst Web Framework mailing list archive at Nabble.com. ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
[Catalyst] Catalyst / DBIx Class Relationship many_to_many problem
Hello! I've started using Catalyst, and now I've started writing my second app (after 1st one - MyApp from tutorial) I've created db tables analogic to tutorial: courses (id, name) users (id, name, email, etc.) course_users (course_id, user_id) When trying to list all users from one course, in my tt view list.tt2 I do: [% FOREACH course IN courses %] [% tt_users = [ ]; tt_users.push(user.name) FOREACH user = course.users %] [% END -%] And then I get error: Couldn't render template undef error - DBIx::Class::Relationship::ManyToMany::__ANON__(): DBI Exception: DBD::Pg::st execute failed: ERROR: syntax error at or near . LINE 1: SELECT user.id, user.name, user.email, user.pass, user.role ... ^ [for Statement SELECT user.id, user.name, user.email, user.pass, user.role FROM course_users me JOIN users user ON ( user.id = me.user_id ) WHERE ( me.course_id = ? ) with ParamValues: 1='1'] at /home/jtutaj/workspace/saps/root/src/courses/list.tt2 line 29 From message I can see there's something with many_to_many relationship, but found nothing when comparing to working tutorial MyApp application. My Schema relationship parts are: Courses.pm: __PACKAGE__-has_many(course_users = 'saps::Schema::CourseUsers', 'course_id'); __PACKAGE__-many_to_many(users = 'course_users', 'user'); Users.pm: __PACKAGE__-has_many(course_user = 'saps::Schema::CourseUsers', 'user_id'); __PACKAGE__-many_to_many(courses = 'course_user', 'course'); CourseUsers.pm: __PACKAGE__-belongs_to(course = 'saps::Schema::Courses', 'course_id'); __PACKAGE__-belongs_to(user = 'saps::Schema::Users', 'user_id'); I already tried getting just simple data like user.name / course.name / course_user.user_id and it all works fine, but when FOREACH user = course.users error always occurs. Any help? Regards Jakub Tutaj -- View this message in context: http://www.nabble.com/Catalyst---DBIx-Class-Relationship-many_to_many-problem-tp21775313p21775313.html Sent from the Catalyst Web Framework mailing list archive at Nabble.com. ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Catalyst / DBIx Class Relationship many_to_many problem
On Sun, Feb 1, 2009 at 1:10 PM, Jakub Tutaj j...@wp.pl wrote: Hello! I've started using Catalyst, and now I've started writing my second app (after 1st one - MyApp from tutorial) I've created db tables analogic to tutorial: courses (id, name) users (id, name, email, etc.) course_users (course_id, user_id) When trying to list all users from one course, in my tt view list.tt2 I do: [% FOREACH course IN courses %] [% tt_users = [ ]; tt_users.push(user.name) FOREACH user = course.users %] [% END -%] And then I get error: Couldn't render template undef error - DBIx::Class::Relationship::ManyToMany::__ANON__(): DBI Exception: DBD::Pg::st execute failed: ERROR: syntax error at or near . LINE 1: SELECT user.id, user.name, user.email, user.pass, user.role ... ^ [for Statement SELECT user.id, user.name, user.email, user.pass, user.role FROM course_users me JOIN users user ON ( user.id = me.user_id ) WHERE ( me.course_id = ? ) with ParamValues: 1='1'] at /home/jtutaj/workspace/saps/root/src/courses/list.tt2 line 29 From message I can see there's something with many_to_many relationship, but found nothing when comparing to working tutorial MyApp application. My Schema relationship parts are: Courses.pm: __PACKAGE__-has_many(course_users = 'saps::Schema::CourseUsers', 'course_id'); __PACKAGE__-many_to_many(users = 'course_users', 'user'); Users.pm: __PACKAGE__-has_many(course_user = 'saps::Schema::CourseUsers', 'user_id'); __PACKAGE__-many_to_many(courses = 'course_user', 'course'); CourseUsers.pm: __PACKAGE__-belongs_to(course = 'saps::Schema::Courses', 'course_id'); __PACKAGE__-belongs_to(user = 'saps::Schema::Users', 'user_id'); I already tried getting just simple data like user.name / course.name / course_user.user_id and it all works fine, but when FOREACH user = course.users error always occurs. Any help? Regards Jakub Tutaj This is actually a DBIx::Class issue and not Catalyst, but the answer to your problem is to simply enable quoting. Since 'user' is a reserved word, you must quote it. See this section in the DBIx::Class cookbook: http://search.cpan.org/~ash/DBIx-Class-0.08010/lib/DBIx/Class/Manual/Cookbook.pod#Setting_quoting_for_the_generated_SQL. -J ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
