Understanding translations for "nested attributes"

rubyonrails-talk
1

I have a use case where I have an STI with the setup below:

class BudgetLine::Accommodation < BudgetLine
  has_many :budget_line_items
  accepts_nested_attributes_for :budget_line_items
end

In a form for BudgetLine::Accommodation, I have a nested form for BudgetLineItem, where I need the labels for the attributes to be unique for that model; different than e.g. BudgetLine::Transportation etc.

In this part of the Rails Internationalization documentation it states:

"In the event you need to access nested attributes within a given model, you should nest these under model/attribute at the model level of your translation file:

en:
  activerecord:
    attributes:
      user/role:
        admin: "Admin"
        contributor: "Contributor"

I thought this applied to my case, but I can’t get it to work with.

en:
  activerecord:
    attributes:
      budget_line:
          accommodation/budget_line_item:
            unit: Room

Can anyone explain to me what exactly is meant here? Is this just another way to structure namespaced models and doesn’t apply to nested attributes for forms?

2

would it work like this?

en:
  activerecord:
    attributes:
      budget_line/accommodation:
        budget_line_item:
          unit: "Room"
      budget_line/transportation:
        budget_line_item:
          unit: "Kilometer"
3

No, I tried that too, but at the end of the day I’m not really sure if this is supposed to work with nested form attributes or if it’s just nesting namespace/model. Either way, I decided to go with a decorator for my use case, which works fine.