On Sat, Apr 26, 2008 at 7:48 PM, Yann Cointepas <[EMAIL PROTECTED]> wrote: > > Hi, > > I noticed that __init__ method of classes derived from Entity is not > called when querying database (I inculded a sample code below). Is > there a way to call a user defined __init__ (or eventually another > method) upon instances creation triggered by a query ? > > In the following code, Movie.__init__ is not called by > Movie.query.all(): > > from elixir import * > > metadata.bind = "sqlite:///movies.sqlite" > #metadata.bind.echo = True > > class Movie(Entity): > title = Field(Unicode(30)) > year = Field(Integer) > description = Field(Text) > > def __init__( self, *args, **kwargs ): > print 'Movie.__init__', args, kwargs > super( Movie, self ).__init__( *args, **kwargs ) > > > def __repr__(self): > return '<Movie "%s" (%d)>' % (self.title, self.year) > > > > print 'Create database' > setup_all() > create_all() > Movie(title=u"Blade Runner", year=1982) > session.flush() > > print 'Query' > print Movie.query.all()
See SQLAlchemy FAQ: http://www.sqlalchemy.org/trac/wiki/FAQ#whyisntmy__init__calledwhenIloadobjects The solution in Elixir terms would translate to something like: class MyExt(MapperExtension): def create_instance(self, mapper, selectcontext, row, class_): return MyObject() class MyObject(Entity): [...] using_mapper_options(extension=MyExt()) -- Gaëtan de Menten http://openhex.org --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "SQLElixir" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sqlelixir?hl=en -~----------~----~----~----~------~----~------~--~---
