_destroyキーの使い方 ~~親(item)の子(image)を削除する~ - Qiita

.main-items = form_with model: @item, local: true do |f| .wrapper.image-wrapper #image-box.image-wrapper__image-box = f.fields_for :images do |i| - if @item.persisted? = i.check_box :_destroy, data:{ index: i.index}, class: 'hidden-destroy' .image-wrapper__image-box__js.js-file_group{:id => "item_images_attributes_#{i.index}_id", data:{index: "#{i.index}"}} = i.label :content, class: "image-wrappe