I see. I'm not an expert, but I will try to help :p
Considering your tables have these fields:
Order: subcontractor_id, costcode_id
Subcontractor: costcode_id
Well, here I would try to do something like this in options_helper.rb
module OrdersHelper
def options_for_association_conditions(association)
if association.name == :cost_code
["cost_codes.id" IN @record.costcode_id]
else
super
end
end
That worked around here, you should try.
end
On Sat, Oct 15, 2011 at 11:06 AM, JB <[email protected]> wrote:
> I looked at the wiki article and still couldn't seem to figure it out.
>
> And no, my model really doesn't have the reverse association. The cost
> codes are just a table that provides a bunch of values that can be
> selected for a drop down list that is used in multiple places.
>
> On Oct 15, 8:59 am, Cláudio Forain <[email protected]> wrote:
>> Maybe this will help:
>>
>> https://github.com/activescaffold/active_scaffold/wiki/Chaining-Form-...
>>
>> PS: Just out of curiosity, shouldn't your model be something like this?
>>
>> class CostCode < ActiveRecord::Base
>> has_many :subcontractors
>> has_many :orders
>> end
>>
>> On Sat, Oct 15, 2011 at 10:47 AM, JB <[email protected]> wrote:
>> > I have the following model:
>>
>> > class CostCode < ActiveRecord::Base
>> > end
>>
>> > class SubContractor < ActiveRecord::Base
>> > has_many :orders
>> > belongs_to :cost_code
>> > end
>>
>> > class Order < ActiveRecord::Base
>> > belongs_to :sub_contractor
>> > belongs_to :cost_code
>> > end
>>
>> > The UI for Order.sub_contractor is a select box. When I select the
>> > sub_contractor on the order, how can I chain the fields so that the
>> > sub_contractor.cost_code is used to populate the order.cost_code?
>>
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>>
>
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