Rails 3, ActiveAdmin custom filter

Question

I have 3 associated models:

class Brand < ActiveRecord::Base
  has_many :car_models
end

class CarModel < ActiveRecord::Base
  has_many :production_years
  belongs_to :brand
end

class ProductionYear < ActiveRecord::Base
  belongs_to :car_model
end

So, how i can make custom filter in ActiveAdmin production_year section, if i want make filtering by Brand? Default filters there: car_model select and year value

Matthew · Accepted Answer · 2011-10-18 09:32:20Z

4

Did you try something like this?

ActiveAdmin.register ProductionYear do
  filter :brand, :as => :check_boxes, :collection => proc { Brand.all }
end

EDIT oops I didn't notice the complexity of your association, I think if you add this to your ProductionYear class things should work better:

class ProductionYear < ActiveRecord::Base
   belongs_to :car_model
   has_one :brand, :through => :car_model
end

edited Oct 18, 2011 at 9:32

answered Oct 18, 2011 at 9:16

Matthew

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4 Comments

BazZy Over a year ago

Yes, this cause error "Undefined methon 'brand_eq'" for #<MetaSearch::Searches::ProductionYear:...>

Matthew Over a year ago

Ahhh the problem is in the model associations, I appended my answer to reflect this

BazZy Over a year ago

Thanks a lot, now it really works! But maybe you can help next to. If i add one more child model for ProductionYear, how to make double 'through' association?

eshaiju Over a year ago

Got dropdown with values but when i filter with this , iam getting empty list

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