<%= f.collection_select_without_bootstrap :group_id, Group.all, :id, :name, {}, {class: "form-control"} %> <%= f.date_field_without_bootstrap :start_date %>〜<%= f.date_field_without_bootstrap :finish_date %> <%= f.text_field_without_bootstrap :memo, {placeholder: "memo", class: "form-control"} %> <%= full_error_message_on f.object, :group_id %> <%= full_error_message_on f.object, :start_date %> <%= full_error_message_on f.object, :finish_date %> <%= full_error_message_on f.object, :memo %> <%= link_to_remove_fields "削除", f %>