Has_many relationship extensions and scoping rules

Rails
#1

Hi all !

Is this supposed to work ?

class Email < ActiveRecord::Base
has_many :to, :class_name => ‘Recipient’, :conditions =>
“recipients.source = ‘to’” do
def create!(*args)
with_scope(:create => {:source => ‘to’}) do
super
end
end

def build(*args)
  with_scope(:create => {:source => 'to'}) do
    super
  end
end

end
end

From my tests, if I call Email.to.create!, the recipient model
correctly has it’s source attribute set to ‘to’. On the other hand,
if I call #build, the recipient’s source is nil.

There must be something I’m doing wrong…

Thanks !

François Beausoleil
http://blog.teksol.info/
http://piston.rubyforge.org/

#2

On 9/8/06, Francois B. [email protected] wrote:

  end

From my tests, if I call Email.to.create!, the recipient model
correctly has it’s source attribute set to ‘to’. On the other hand,
if I call #build, the recipient’s source is nil.

There must be something I’m doing wrong…

Using with_scope around build simply has no effect. with_scope is
used for scoping the SQL query, which does not make sense in the
context of build (which just builds up an instance). I think what you
want to do can be achieved by calling super, grabbing the returned
object, and forcibly setting the “source” attribute to your desired
value (“to”) before returning.

–
Bosko M. [email protected]