Hi, I managed to get the complex forms and nested resources described in http://railscasts.com/episodes/75-complex-forms-part-3 to work. But I'm having problems when deleting a sub item. def existing_task_attributes=(task_attributes) tasks.reject(&:new_record?).each do |task| attributes = task_attributes[task.id.to_s] if attributes task.attributes = attributes else tasks.delete(task) end end end the tasks.delete(task) gives me a mysql error: Mysql::Error: Cannot add or update a child row: a foreign key constraint fails My main item has several sub items and a sub item belongs to the main item. In my mysql database, the constraint is set at the sub item table, pointing to the main item id and on delete => cascade. Anyone has an idea on what is going on? Why this is giving me an error?
on 2008-10-04 15:48
on 2008-10-04 20:21
It looks like when the delete action is executed, rails first updates the sub item id to null instead of deleting it :s
on 2008-10-04 20:26
looks like I solved the problem myself. Looks like when you say delete it sets the id to null. I needed to use destroy.