Question

In my /app/views/institution/_form.html.erb I have

<%= f.textfield :auto_complete_list %>

Which gets its data from /app/models/institution.rb

  def auto_complete_list
    return self.county.city.name + ' '+ self.county.name
  end

But I don’t want this to be submitted when the button is pressed.
My current solution is to delete it from params[:institution]
Is there a cleaner approach to removing read-only attributes from submit parameters?

Answer 1

While I agree with daekrist’s answer, you can easily keep this out of params[:institution] by using the lower level form helper methods that:

<%= form_for @institution do |f| %>
  ...
  <%= text_field_tag 'auto_complete_list', @institution.auto_complete_list %>
  ...
<% end %>

So now when the form is submitted, it will be in params[:auto_complete_list] instead of params[:institution][:auto_complete_list].