class Ticket(models.Model): \"\"\" An order 开发者_如何学Cplaced by a customer. \"\"\" account = models.ForeignKey(Account)
Maybe this is a stupid question but it\'s bugging me. I have a bi-directional one to many relationship of Employee to Vehicles. When I persist an Employee in the database for the first time (i.e. it
By any chance is it possible to create a conditional association with DataMapper? For example: Iwant the User have n Apps just if that user have the attribute :developer => true
Having two tables, \"users\" and \"lists\", and a many-to-many \"subscriptions\" table relating users to lists (thus having foreign keys user_id and list_id), what would be a single SQL query to find
How do I setup a basic OneToMany relationship using a List and get Hibernate JPA to manage the sequence index number of the list automagically? Can this be done?
I have an application that uses one-to-many relationshipped objects like oreder-o开发者_StackOverflow中文版rderDetails, vith EntityFramework.
Instead of getting into code, I have a simple quest开发者_开发知识库ion.Default behavior for a simple one-to-many is that it inserts the child record then updates the foreign key column with the paren
I have a relatively simple one-to-many relationship and use acts_as_tree to get it organized in the view. It kinda looks like this:
When trying to save an ID from my parent class into a child class, I keep getting 开发者_如何学JAVAthe error
I\'m trying to design a pretty simple app and am getting myself a bit confused with Hibernate\'s definition of entity and value objects (as defined in Chapter 4 of Java Persistence with Hibernate).
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