我正在使用Rails 7创建一个名为 Employee Management System 的应用程序。要添加员工，我创建了一个表单。在这里，我使用了nested-form-fields gem 来添加员工的联系人。问题是第一次加载表单时，当我想添加或删除联系人字段时，它会重定向到同一个表单。但是当我刷新页面时，它开始工作没有任何问题。甚至添加或删除的字段也会反映在数据库中。仅在首次加载创建或更新员工页面时才会产生此问题。我发现当我单击链接添加员工并打开表单时。事件未在 html 中加载。正如我们在下图中身体标签附近的图片中看到的那样：
但刷新后，会加载事件：
我在 gem 文件夹中看到了 js.coffee 文件，但这对于像我这样的初学者来说太高级了。那里的代码如下所示：
window.nested_form_fields or= {}
nested_form_fields.bind_nested_forms_links = () ->
$('body').off("click", '.add_nested_fields_link')
$('body').on 'click', '.add_nested_fields_link', (event, additional_data) ->
$link = $(this)
object_class = $link.data('object-class')
association_path = $link.data('association-path')
added_index = $(".nested_#{association_path}").length
$.event.trigger("fields_adding.nested_form_fields",{object_class: object_class, added_index: added_index, association_path: association_path, additional_data: additional_data});
if $link.data('scope')
$template = $("#{$link.data('scope')} ##{association_path}_template")
else
$template = $("##{association_path}_template")
target = $link.data('insert-into')
template_html = $template.html()
# insert association indexes
index_placeholder = "__#{association_path}_index__"
template_html = template_html.replace(new RegExp(index_placeholder,"g"), added_index)
# look for replacements in user defined code and substitute with the index
template_html = template_html.replace(new RegExp("__nested_field_for_replace_with_index__","g"), added_index)
# replace child template div tags with script tags to avoid form submission of templates
$parsed_template = $(template_html)
$child_templates = $parsed_template.closestChild('.form_template')
$child_templates.each () ->
$child = $(this)
$child.replaceWith($("<script id='#{$child.attr('id')}' type='text/html' />").html($child.html()))
if target?
$('#' + target).append($parsed_template)
else
$template.before( $parsed_template )
$parsed_template.trigger("fields_added.nested_form_fields", {object_class: object_class, added_index: added_index, association_path: association_path, event: event, additional_data: additional_data});
false
$('body').off("click", '.remove_nested_fields_link')
$('body').on 'click', '.remove_nested_fields_link', ->
$link = $(this)
return false unless $.rails == undefined || $.rails.allowAction($link)
return false if $link.attr('disabled')
object_class = $link.data('object-class')
delete_association_field_name = $link.data('delete-association-field-name')
removed_index = parseInt(delete_association_field_name.match('(\\d+\\]\\[_destroy])')[0].match('\\d+')[0])
$.event.trigger("fields_removing.nested_form_fields",{object_class: object_class, delete_association_field_name: delete_association_field_name, removed_index: removed_index });
$nested_fields_container = $link.parents(".nested_fields").first()
delete_field = $nested_fields_container.find("input[type='hidden'][name='#{delete_association_field_name}']")
if delete_field.length > 0
delete_field.val('1')
else
$nested_fields_container.before "<input type='hidden' name='#{delete_association_field_name}' value='1' />"
$nested_fields_container.hide()
$nested_fields_container.find('input[required]:hidden, select[required]:hidden, textarea[required]:hidden').removeAttr('required')
$nested_fields_container.trigger("fields_removed.nested_form_fields",{object_class: object_class, delete_association_field_name: delete_association_field_name, removed_index: removed_index});
false
$(document).on "page:change turbolinks:load", ->
nested_form_fields.bind_nested_forms_links()
jQuery ->
nested_form_fields.bind_nested_forms_links()
#
# * jquery.closestchild 0.1.1
# *
# * Author: Andrey Mikhaylov aka lolmaus
# * Email: lolmaus@gmail.com
# *
#
$.fn.closestChild = (selector) ->
$children = undefined
$results = undefined
$children = @children()
return $() if $children.length is 0
$results = $children.filter(selector)
if $results.length > 0
$results
else
$children.closestChild selector有什么可以改变来解决这个问题吗？请帮忙！！