cocoon nested_form はもう古い!? Cocoon で作る1対多のフォームcocoonRailsRails Couldn’t find the element to insert the template. Make sure your `data-association-insertion-*` on `link_to_add_association` is correct.cocoonRailsRubyGemRuby
nested_form はもう古い!? Cocoon で作る1対多のフォームcocoonRailsRails Couldn’t find the element to insert the template. Make sure your `data-association-insertion-*` on `link_to_add_association` is correct.cocoonRailsRubyGemRuby