then you have to look up an existing Category and use that. theres a recipe to make this automatic:
http://www.sqlalchemy.org/trac/wiki/UsageRecipes/UniqueObject On Mar 10, 2007, at 9:29 AM, sqad wrote: > > I have 2 tables. > > One that maps categories (schema: Category) that are created/ > initialized when database is first created: > ---------------------------------------------------------------------- > --------------------------------------- > -category_id (primary-key), > -category_name > > [sample STATIC-CONSTANT table mappings] > 1 , 'Local' > 2 , 'Global' > etc., > > Another that contains (schema: Event): > ---------------------------------------------------------------------- > --------------------------------------- > -event_id (primary-key), > -category_id (foreign-key), > -date, > -etc, > > This is a one to one relationship. I am using Pylons MVC framework > with SA. When creating an Event object which requires association with > a category, how do I map it? > > I have the following mappers: > > assign_mapper(session_context, Category, category_table) > assign_mapper(session_context, > Event, > event_table, > properties = {'category' : relation(Category, cascade="all, > delete-orphan")} > > Basically, what's the syntax to create the event with some category? > This doesn't work. > event.category = Category("Local") > > It creates a NEW entry in the "Category" table, which is not what I > wanted. I want to basically link the Event table to the Static > Category table through reference of the primary/foreign-key > relationship. > > Thanks! > > /sqad > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~----------~----~----~----~------~----~------~--~---
