这个功能曾经可以工作，但突然停止了，我不知道为什么。我在运行测试之前进行了更改，但是，在追溯我的步骤后，我不知道发生了什么变化。一双新鲜的眼睛能告诉我为什么这是保存帖子而不是位置吗？
模型帖子.rb
class Post < ActiveRecord::Base
attr_accessible :title, :body, :tag_list, :locations_attributes
has_and_belongs_to_many :locations
accepts_nested_attributes_for :locations, :reject_if => :all_blank
end
*控制器 Posts_controller.rb *
class PostsController < ::Blogit::ApplicationController
...
def new
@post = current_blogger.blog_posts.new(params[:post])
@location = @post.locations.build
end
def update
@post = current_blogger.blog_posts.find(params[:id])
if @post.update_attributes(params[:post])
redirect_to @post, notice: 'Blog post was successfully updated.'
else
render action: "edit"
end
end
def create
@post = current_blogger.blog_posts.new(params[:post])
if @post.save
redirect_to @post, notice: 'Blog post was successfully created.'
else
render action: "new"
end
end
end
*查看_form.html.erb*
<%= nested_form_for(@post, :html=> {:multipart => true, :class=> "new_blog_post", :id=> "new_blog_post"}) do |f| %>
...
<%= field do %>
<%= f.text_field :title, placeholder: "Give your post a title", :class=>"span12" %>
<% end %>
<%= field do %>
<%= f.text_area :body, placeholder: "Write something here...", :id=>"blog-text", :class=>"span12" %>
<% end %>
<%= field id: "new_blog_post_tag_field" do %>
<%= f.label :tag_list, "Tags" %>
<%= f.text_field :tag_list, placeholder: "tag one, tag two, etc..." %>
<% end %>
<%= f.label :search_locations, "Add locations to your post" %>
<%= render :partial => 'search_locations', :locals => { :f => f } %>
<p><%= f.link_to_add "Add a location", :locations %></p>
<%= actions do %>
<%= f.submit "Submit", :class=>"btn", :disable_with => 'Uploading Image...' %> or
<%= link_to("cancel", @post.new_record? ? root_path : post_path(@post)) %>
<% end %>
<% end %>
*形成部分 _search_locations.html.erb*
<%= f.fields_for :locations do |m| %>
<%= m.text_field :name,:class=>"localename", :id=>"appendedInput", :placeholder=> "Name of the location", :autocomplete => "off" %>
<span class="add-on"><%= m.link_to_remove do %><i class='icon-trash'></i></span><%end%>
<% end %>
日志中的实际提交是这样的：
Started PUT "/blog/posts/51-hong-kong" for 127.0.0.1 at 2012-11-06 17:41:00 +0000
Processing by Blogit::PostsController#update as HTML
Parameters: {"utf8"=>"✓",
"authenticity_token"=>"s+2117Qi/HzO/D/ORINhqHChMJR3S5XK7y/s3rq3dnc=", "post"=>{"title"=>"Hong
Kong ", "body"=>"Lorem ipsum dolor sit amet, consectetur adipiscing elit. In orci elit,
rhoncus quis interdum vel, interdum non nulla. Phasellus nec massa lorem. Duis malesuada
pellentesque orci, accumsan mollis augue aliquam mollis. Pellentesque luctus orci in enim
hendrerit adipiscing. Mauris tempor tortor in leo posuere tristique.", "tag_list"=>"",
"locations_attributes"=>{"0"=>{"_destroy"=>"false",
"name"=>"London","longitude"=>"-0.1276831", "latitude"=>"51.5073346"}}},
"_wysihtml5_mode"=>"1", "name"=>"London", "legname"=>"London", "longitude"=>"-0.1276831",
"latitude"=>"51.5073346", "commit"=>"Submit", "id"=>"51-hong-kong"}
为什么这是保存帖子而不是位置信息？