STI class not inheriting attributes from citier child class about citier HOT 6 OPEN

 class Content < ActiveRecord::Base
  acts_as_citier
  validates :page_id, presence: true
 end

 class CommonField < Content
   acts_as_citier
   self.inheritance_column = 'sub-type'
 end

 class Text < CommonField 
 end

I'm also having problems with STI. In my case, STI child class able to inherit attributes from both Content and CommonField but when i save it, Content is saving the type of STI class as nil rather than CommonField.

1.9.2p320 :006 > t = Text.new(page_id: 1)
citier -> Root Class
citier -> table_name -> contents
citier -> Non Root Class
citier -> table_name -> common_fields
citier -> tablename (view) -> view_common_fields
=> #<Text id: nil, page_id: 1, type: nil, subtype: "Text", description: nil, url: nil, created_at: nil, updated_at: nil>
1.9.2p320 :007 > t.save!
citier -> SAVING Text
citier -> Attributes for CommonField: {"id"=>nil, "page_id"=>1, "type"=>nil, "subtype"=>"Text", "description"=>nil, "url"=>nil, "created_at"=>nil, "updated_at"=>nil}
citier -> Changed attributes for CommonField: ["subtype", "page_id", "id"]
citier -> Attributes for Text: {}
citier -> Changed attributes for Text: []
citier -> SAVING CommonField
citier -> Attributes for Content: {"id"=>nil, "page_id"=>1, "type"=>nil}
citier -> Changed attributes for Content: ["page_id", "id"]
citier -> Attributes for CommonField: {"subtype"=>"Text", "description"=>nil, "url"=>nil, "created_at"=>nil, "updated_at"=>nil}
citier -> Changed attributes for CommonField: "subtype" BEGIN
SQL (0.2ms) INSERT INTO contents (page_id, type) VALUES (1, NULL)
(49.8ms) COMMIT
(0.2ms) BEGIN
SQL (0.2ms) INSERT INTO common_fields (created_at, description, id, subtype, updated_at, url) VALUES ('2013-02-21 10:17:27', NULL, 10, 'Text', '2013-02-21 10:17:27', NULL)
(44.4ms) COMMIT
=> true

from citier.

I have exactly the same problem as @maliakmal, I had not read this post before so I started a new issue
#68. I use an ugly workaround to make the child class inherit the middle class attributes.

from citier.

This gem does not seem to be maintained, in the end i used Multiple Table Inheritance with AR.

from citier.

@zubairshams, is this a gem ? can you paste the link to it ?

from citier.

@gustavobap No i'm not using any gem, you can achieve this without the gem. But there are some gem for achieving this.

https://github.com/hzamani/acts_as_relation
https://github.com/BenjaminMedia/Heritage

But i recommend you should do this without using any gem. There is a great help to achieve Multiple table inheritance in this article.
http://techspry.com/ruby_and_rails/multiple-table-inheritance-in-rails-3/

This way you can also customize it according to your needs.

from citier.

Hi, @zubairshams thanks for the answer, I saw other solutions but they are based on simulating MTI, I want to actually inherit the model classes like with Rails STI. I ended up with a very simple workaround, in @maliakmal example the only modification would be:

 class Text < CommonField 
     acts_as_citier :table_name => 'common_fields'
 end

from citier.