On Nov 12, 7:32 pm, "[EMAIL PROTECTED]"
<[EMAIL PROTECTED]> wrote:
> Hi,
>
> I ve defined the following relation in one of my models with a dynamic
> where condition:
> has_one :selection,
> :foreign_key => 'object_id',
> :conditions => 'selection_type = 1 and account_id = #
> {self.send(:account_id)}'
>
> That works perfect, however when I try to eager load that relation I
> am getting the following error when doing a count. Seems that self is
> not really my model class anymore.... Does anybody know how I can get
> that up and running?
>
When you do a 'normal' load the conditions are interpolated in the
context of the appropriate instance, but when you do an eager load
that can't happen (because the object is not loaded yet (so account_id
is not known) or because you are loading multiple record) so the
conditions are evaluated in the context of the class. You just can't
eager load stuff with that sort of interpolated condition, although I
suppose you might be able to put together a separate association,
purely for eager loading, where the conditions would become account_id
= parent_objects.account_id.
Fred
> Thanks a lot in advance
>
> NoMethodError (undefined method `account_id' for
> #<ActiveRecord::Associations::ClassMethods::JoinDependency::JoinAssociation :
> 0x4d5bf5c>):
> C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/
> active_record/associations.rb:1621:in `interpolate_sql'
> (eval):1:in `interpolate_sql'
> C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/
> active_record/associations.rb:1600:in `association_join'
> C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/
> active_record/associations.rb:1599:in `each'
> C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/
> active_record/associations.rb:1599:in `association_join'
> C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/
> active_record/calculations.rb:184:in `construct_calculation_sql'
> C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/
> active_record/calculations.rb:184:in `collect'
> C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/
> active_record/calculations.rb:184:in `construct_calculation_sql'
> C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/
> active_record/calculations.rb:212:in `execute_simple_calculation'
> C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/
> active_record/calculations.rb:121:in `calculate'
> C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/
> active_record/calculations.rb:117:in `catch'
> C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/
> active_record/calculations.rb:117:in `calculate'
> C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/
> active_record/calculations.rb:45:in `count'
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