1

我正在使用 ryan bates 的插件 nested_form 并且我一直在尝试为 has_many :through 关系编写我的表单。

我有 3 个模型：

Profile
  has_many :memberships
  has_many :organizations, :through => :memberships
  accepts_attributes_for :organizations
  attr_accessible :organization_attribtues
Membership
  has_many :profiles
  has_many :organizations
Organization
  has_many :memberships
  has_many :profiles, :though => :memberships

下面的表格用于配置文件，但其中嵌套了组织。我可以通过执行 f.fields_for :organizations 创建有关组织的信息，但是我不清楚如何更新特定于他们在组织中的成员的信息。具体来说，成员资格表上有一个标题属性（我在下面将其注释掉，因为它为组织抛出了一个错误未定义的方法“标题”）。任何帮助将非常感激！谢谢。

= f.fields_for :organisations do |org|
    = org.input :name, :label => "<strong>Name of the Organization</strong>"
    = org.input :title, :label => "Your role"
    = org.input :description, :as => :text, :label => "Description of the organization",
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2 回答 2

2

正如我在 StackOverflow 上看到的另一个问题，我需要像这样嵌套 hm => t

= f.fields_for :memberships do |mem|
= mem.fields_for :organisation do |org|
  .row
    .span5.org_name
      = org.input :name, :label => "<strong>Name of the Organization</strong>"
    .span5
      = mem.input :title, :label => "<strong>Title in the Organization</strong>"
  .row
    .span5
      = mem.input :starting_year, :label => "<strong>Starting Year</strong>"
    .span5
      = mem.input :ending_year, :label => "<strong>Ending Year</strong>"
  .row
    .span10
      = org.text_area :description, :label => "<strong>Description of Organisation</strong>"
= mem.link_to_remove "Remove this oranisation"
= f.link_to_add "Add an organisation", :memberships

但是使用 Ryan Bates 的插件，据我所知，与会员组织的关联并没有建立，所以我创建了一个像这样的新方法：

     = f.link_to_add_hmt "Add an organisation", :organisation, :memberships

然后我几乎只是逐字复制了 Ryan Bates 的插件，添加了一个新参数，在下面添加了 2 行

def link_to_add_hmt(*args, &block)
  options = args.extract_options!.symbolize_keys
  association = args.pop
  association_two = args.pop
  options[:class] = [options[:class], "add_nested_fields"].compact.join(" ")
  options["data-association"] = association
  args << (options.delete(:href) || "javascript:void(0)")
  args << options
  @fields ||= {}
  @template.after_nested_form(association) do
    model_object = object.class.reflect_on_association(association).klass.new
    model_object.send(:"build_#{association_two}")
    output = %Q[<div id="#{association}_fields_blueprint" style="display: none">].html_safe
    output << fields_for(association, model_object, :child_index => "new_#{association}", &@fields[association])
    output.safe_concat('</div>')
    output
  end 
  @template.link_to(*args, &block)
end

查找对“association_two”的引用。这很好用！

于 2011-11-05T12:38:39.223 回答
1

更新了最新版本的nested_form

https://gist.github.com/stuartchaney/7274894

于 2013-11-02T02:46:27.010 回答