ruby on rails - Translation for nested_attributes in polymorphic relationship -

i'm trying translate label of nested form attribute of polymorphic model. i'm using rails 4.
object relationship:

class question < activerecord::base   has_many :attachments, as: :attachable,  dependent: :destroy   accepts_nested_attributes_for :attachments end  class attachment < activerecord::base   belongs_to :attachable, polymorphic: true end 

my form:

= form_for @question |f|   .form-group     =f.text_area :body    = fields_for :attachments |a|     .form-group       = a.label :file       = a.file_field :file    = f.submit 

my ru.yml:

activerecord:   attributes:     question:       attachment:         file: Файл       attachments:         file: Файл     attachment:       file: Файл 

doesn't work. should locale structure?

according to: http://api.rubyonrails.org/classes/actionview/helpers/formhelper.html#method-i-label

you should try with:

helpers:   label:     yourmodelname:       yourmodelattr: "write entire text here" 

this guessing i18n.locale set :ru

hope helps you.

quoting documentation:

localization can based purely on translation of attribute-name (if using activerecord):

activerecord:   attributes:     post:       cost: "total cost" 

output:

f.label(:post, :cost) # => <label for="post_cost">total cost</label>