我想通過以下的Rails Guide創造職位標籤:無法批量分配受保護的屬性:tags_attributes?
tag.rb:
class Tag < ActiveRecord::Base
attr_accessible :name
belongs_to :post
end
post.rb:
class Post < ActiveRecord::Base
attr_accessible :title, :content, :tags
validates :title, :presence => true,
:length => { :maximum => 30 },
:uniqueness => true
validates :content, :presence => true,
:uniqueness => true
belongs_to :user
has_many :comments, :dependent => :destroy
has_many :votes, :as => :votable, :dependent => :destroy
has_many :tags
accepts_nested_attributes_for :tags, :allow_destroy => :true,
:reject_if => proc { |attrs| attrs.all? { |k, v| v.blank? } }
end
的意見/職位/_form.html.erb:
<% @post.tags.build %>
<%= form_for(@post) do |post_form| %>
<%= render 'shared/error_messages' %>
<div class="field">
<%= post_form.label :title %><br />
<%= post_form.text_field :title %>
</div>
<div class="field">
<%= post_form.label :content %><br />
<%= post_form.text_area :content %>
</div>
<h2>Tags</h2>
<%= render :partial => 'tags/form',
:locals => {:form => post_form} %>
<div class="actions">
<%= post_form.submit %>
</div>
<% end %>
的意見/標籤/ _form.html.erb:
<%= form.fields_for :tags do |tag_form| %>
<div class="field">
<%= tag_form.label :name, 'Tag:' %>
<%= tag_form.text_field :name %>
</div>
<% unless tag_form.object.nil? || tag_form.object.new_record? %>
<div class="field">
<%= tag_form.label :_destroy, 'Remove:' %>
<%= tag_form.check_box :_destroy %>
</div>
<% end %>
<% end %>
但是當我嘗試創建標籤,我得到這個錯誤:
無法大規模指派保護屬性:tags_attributes Rails.root: /home/alex/rails/r7
Application Trace |框架跟蹤|充分跟蹤 應用程序/控制器/ posts_controller.rb:25:在`創建」請求
參數:
{ 「UTF8」=> 「✓」, 「authenticity_token」=> 「VF/qlfZ4Q5yvPY4VIbpFn65hoTAXdEa4fb4I1Ug4ETE =」 , 「post」=> {「title」=>「post number 5」,「content」=>「post number 5 post number 5 post number 5」,「tags_attributes」=> {「0」=> {「 name「=>」food, drinks「}}},」commit「=>」Create Post「}
任何解決此問題的建議?