Question

我正在使用acts_as_commentable_with_threading gem。

我的_new.html.erb

<div class="adding_comment">&nbsp;</div>
<%=form_for [commentable, Comment.new], :remote => false do |f|%>
 <%=f.hidden_field :commentable_id, :value=> @post.id %><br/>
 <%=f.label :title%> :<br/>
 <%=f.text_field :title%><br/>
 <%=f.label :subject%> :<br/>
 <%=f.text_field :subject%><br/>
 <%=f.label :body%><br/>
 <%=f.text_area :body, :style=>"width:320;height:80px"%><br/><br/>
 <%=f.submit "Add comment"%>
<%end%>

评论控制员：

class CommentsController < ApplicationController
 def create
  @post = Post.find(params[:comment][:commentable_id])
  @user_who_commented = current_user
  @comment = Comment.build_from(@post, @user_who_commented.id, "Comment!" )
 end
end

在我的帖子模型中，我添加了：

acts_as_commentable

在我的帖子的show.html.erb中：

<%= render :partial => "comments/new", :locals => { :commentable => @post }%><br/>
<h1>Comments</h1>
<div id="comments">
<%=render :partial => 'comments/index',:locals => {:commentable=> @post, :comments => @comments}%>
</div>

但点击“提交”按钮后，我收到错误：

Called id for nil, which would mistakenly be 4 -- if you really wanted the id of nil, use object_id
Request:
    {"utf8"=>"✓",
 "authenticity_token"=>"2GvCfaCB/qAxdh+1jJvcZ76jL9fdxP+h5qEIOClmNHk=",
 "comment"=>{"commentable_id"=>"1",
 "title"=>"et",
 "subject"=>"et",
 "body"=>"ewt"},
 "commit"=>"Add comment",
 "post_id"=>"google-search-and-search-engine-spam"}

请帮帮我。感谢。

Answer 1

您尝试将#id方法调用为nil对象。你打电话给#id的唯一部分就是你打电话：

@comment = Comment.build_from（@ post，@ user_who_commented.id，“Comment！”）

和@user_who_commented是你的current_user。你确定有current_user吗？

Rails 3 acts_as_commentable_with_threading gem

1 个答案: