First off, sorry for all the posts, I'm trying to figure out how to
port a large XML/JSON app (>150 tables) from AR to Sequel.
I read thru the rdoc and saw some IRC chat on this, but the solutions
don't work from what I can tell. It is possible I missed something.
Say I have this in AR:
class Account < ActiveRecord::Base
named_scope :active, :conditions => 'is_active = 1'
named_scope :admin, :conditions => 'account_type_id = 3'
named_scope :by_newest_reg, :order => 'registration_date desc'
end
I can then chain them together and get all three combined:
Account.admin.active.by_newest_reg
In the Sequel DSL that would be something like
Account.filter( 'is_active = 1').filter('account_type_id = 3').order
(:registration_date.desc)
So I tried to port this over to Sequel by just defining some self.
methods in the model:
class Account < Sequel::Model
def self.active
filter('is_active = 1')
end
def self.admin
filter('account_type_id = 3')
end
def self.by_newest_reg
order(:registration_date.desc)
end
end
And that works but only one deep, because the return from Model.find/
filter/etc is actually Dataset, not Model. So these work:
Account.active
Account.admin
Account.by_newest_reg
But not:
Account.admin.active.by_newest_reg
Because the return is a different class, the only way I see that
working is if Model < Dataset which looks nontrivial.
I miss somthing obvious?
-Nate
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