Rails 4、Paperclip 和多态关联 [英] Rails 4, Paperclip and polymorphic association
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问题描述
我有 2 个模型:新闻和上传的文件
班级新闻
和形式:
<%= form_for(@news) do |f|%><div class="field"><%= f.fields_for :uploadedfile, f.uploadedfile.new do |uf|%><%= uf.label :url %><br><%= uf.file_field :url %><%结束%>
<div class="actions"><%= f.submit %>
<%结束%>
当我提交表单时,我的表 uploadedfile
没有改变
问题出在哪里?谢谢!
解决方案
我想你已经嵌套了 :uploadedfiles
班级新闻
并在形式:改变:
<%= f.fields_for :uploadedfile, f.uploadedfile.new do |uf|%>
到:
<%= f.fields_for :uploadedfiles, Uploadedfile.new do |uf|%>
I have 2 models: News and Uploadedfile
class News < ActiveRecord::Base
has_many :uploadedfiles, as: :parent
attr_accessible :title, :content, :author
end
class Uploadedfile < ActiveRecord::Base
belongs_to :parent, polymorphic: true
has_attached_file :url
attr_accessible :url_file_name, :url_content_type, :url_file_size, :url_updated_at
end
And form:
<%= form_for(@news) do |f| %>
<div class="field">
<%= f.fields_for :uploadedfile, f.uploadedfile.new do |uf| %>
<%= uf.label :url %><br>
<%= uf.file_field :url %>
<% end %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
When i'm submitting form, my table uploadedfile
is not changed
where is the problem? thank you!
解决方案
I think you have nested arribute :uploadedfiles
class News < ActiveRecord::Base
has_many :uploadedfiles, as: :parent
attr_accessible :title, :content, :author, :uploadedfiles_attributes
accept_nested_attributes_for :uploadedfiles
end
And in form : change:
<%= f.fields_for :uploadedfile, f.uploadedfile.new do |uf| %>
to:
<%= f.fields_for :uploadedfiles, Uploadedfile.new do |uf| %>
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