<%- trix_id = f.object.new_record? ? (local_assigns[:tmp_id] ? "#{dom_id(f.object, attr)}_#{local_assigns[:tmp_id]}" : "#{attr}_new_#{model_name_from_record_or_class(f.object).param_key.pluralize}" ) : dom_id(f.object, attr) -%> <%= f.label attr, local_assigns[:label], for: nil unless local_assigns[:skip_label] %> <%= f.hidden_field attr, id: trix_id %>