Changing a readonly input text in Active Admin

Question

I have an association where a code has an influencer. I want to show the influencer username as readonly in the code form.

Right now I'm doing:

form do |f|
f.inputs 'Code' do
  f.input :influencer, input_html: { readonly: true, disabled: true  }, as: :string if !f.object.new_record?

But I get this and I want the influencer name or username.

Ideas?

Answer 1

I ended up adding this line in the code model

delegate :username, to: :influencer, prefix: true, allow_nil: true

and then this in the form:

f.input :influencer_username,
          label: 'Influencer',
          input_html: { readonly: true, disabled: true },
          as: :string unless f.object.new_record?