【发布时间】:2013-05-29 22:41:09
【问题描述】:
我正在尝试使用 Cocoon gem 为 Poi(兴趣点)对象创建具有嵌套属性的 Package 对象。当我创建一个新包时,我想添加现有的 Pois,选择它们进行关联。但问题是当我创建一个新包时,我添加到这个包中的 Pois 没有链接到它。所以我提交表单时不会创建 package_pois 关系。
这是我的代码:
class Package
has_many :package_pois
has_many :pois, :through => :package_pois, :class_name => 'Poi'
belongs_to :user
accepts_nested_attributes_for :pois
accepts_nested_attributes_for :package_pois
end
class PackagePoi
belongs_to :poi
belongs_to :package
accepts_nested_attributes_for :poi, :reject_if => :all_blank
end
包/_form.html.erb
<div id="package">
<%= f.simple_fields_for :package_pois do |poi| %>
<%= render 'package_poi_fields', :f => poi %>
<% end %>
<%= link_to_add_association 'dd poi', f, :package_pois %>
</div>
包/ackage_poi_fields.html.erb
<div class="nested-fields package-poi-fields">
<div id="pacakge_form_list">
<%= f.association :poi, :collection => Poi.all(:order => 'title'), :prompt => 'Add existing poi' %>
</div>
<%= link_to_remove_association "Remove poi", f %>
</div>
还有 package-new.js:
$("#package a.add_fields").
data("association-insertion-position", 'before').
data("association-insertion-node", 'this');
$('#package').bind('insertion-callback',
function() {
$(".package-poi-fields a.add_fields").
data("association-insertion-position", 'before').
data("association-insertion-node", 'this');
$('.package-poi-fields').bind('insertion-callback',
function() {
$(this).children("#pacakge_form_list").remove();
$(this).children("a.add_fields").hide();
});
});
为什么它不创建 package_pois 关联?我能做什么? 谢谢
【问题讨论】:
-
没有PackagePoi是Package和Poi的关联类,所以它有两个belongs_to
标签: ruby-on-rails-3 gem nested-forms cocoon-gem