Rails的:无法获取fields_for工作嵌套的内部资源
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25-09-2019 - |
题
我想要一个fields_for属性添加到嵌套轨形式。任何时候,我尝试创建一个新的对象,它返回
预期消息(#58819400),GOT 阵列(#18903800)...
应用程序/控制器/ discussions_controller.rb:53:在 `创建'
如果我尝试基于非嵌套资源(又名“的form_for @parent”嵌套fields_for从形式的访问,而不是“的form_for [@parent,@child]”它工作正常,代码如下 - 任何帮助,这真的很感激
控制器:
# GET /discussions/new
# GET /discussions/new.xml
def new
@forum = Forum.find(params[:forum_id])
@discussion = Discussion.new
@discussion.messages.build
respond_to do |format|
format.html # new.html.erb
format.xml { render :xml => @discussion }
end
end
def create
@forum = Forum.find_by_id(params[:forum_id])
@discussion = @forum.discussions.new(params[:discussion])
@discussion.user = current_user
respond_to do |format|
if @discussion.save
format.html { redirect_to([@forum, @discussion], :notice => 'Discussion was successfu#ly created.') }
format.xml { render :xml => [@forum, @discussion], :status => :created, :location => @discussion }
else
format.html { render :action => "new" }
format.xml { render :xml => @discussion.errors, :status => :unprocessable_entity }
end
end
end
型号:
class Forum < ActiveRecord::Base
belongs_to :user
has_many :discussions, :dependent => :destroy
validates :title, :presence => true
accepts_nested_attributes_for :discussions, :allow_destroy => true
end
class Discussion < ActiveRecord::Base
belongs_to :user
belongs_to :forum
has_many :messages, :dependent => :destroy
validates :title, :presence => true
end
class Message < ActiveRecord::Base
belongs_to :user
validates :user, :presence => true
validates :content, :presence => true
end
视图:
<%= form_for [@forum, @discussion] do |f| %>
<% if @discussion.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@discussion.errors.count, "error") %> prohibited this discussion from being saved:</h2>
<ul>
<% @discussion.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :title %><br />
<%= f.text_field :title %>
</div>
<%= f.fields_for :messages do |builder| %>
<%= builder.label :content, "Message" %>
<%= builder.text_area :content, :rows => 10 %>
<% end %>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
最后,路由:
resources :forums do
resources :discussions do
resources :messages
end
end
任何帮助非常感激 - 我完全难倒
解决方案
Arghhh - 真的对不起乡亲...我只是意识到自己忘了在讨论模型accepts_nested_attributes_for,与因此论坛可以访问的讨论,但讨论不能踏踏实实地的消息
由于无论如何。
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