使用AJAX显示错误消息Ruby on Rails

时间:2010-04-23 17:02:18

标签: ruby-on-rails ruby error-handling

我使用Ruby on Rails构建了一个博客。两者都是新的。我正在非常有效地实现AJAX,直到我进入错误处理部分。

我允许对帖子发表评论,并通过在/views/posts/show.html.erb页面中呈现评论部分和远程表单来执行此操作。成功保存评论后,使用views / comments / create.js.rjs更新节目页面并显示闪光通知。

我只是试图在没有保存时​​闪现通知。搜索并自己研究了一下。无法让它飞起来。这是我的代码:

/views/posts/show.html.erb

<div id="comments">

    <%= render :partial => @post.comments %>
    <div id="notice"><%= flash[:notice] %></div> 
</div>

<% remote_form_for [@post, Comment.new] do |f| %>

    <p>
        <%= f.label :body, "New Comment" %><br/>
        <%= f.text_area (:body, :class => "textarea") %>
    </p>
    <p>
        <%= f.label :name, "Name" %><br/>
        <%= f.text_field (:name, :class => "textfield") %>
    </p>
    <p>
        <%= f.label :email, "Email" %><br/>
        <%= f.text_field (:email, :class => "textfield") %>
    </p>
    <p><%= f.submit "Add Comment" %></p>
<% end %>

/views/comments/_comment.html.erb

<% div_for comment do %>
<div id="comment-wrapper">

        <%  if admin? %>
        <div id="comment-destroy"><%=link_to_remote "X", :url => [@post, comment], :method => :delete %></div>
        <% end %>
        <%= h(comment.body) %><br/><br/>
        <div class="small">Posted <%= time_ago_in_words(comment.created_at) %> ago by <%= h(comment.name) %> 
        <%  if admin? %>
         | <%= h(comment.email) %>

        <% end %></div>

    </div>
<% end %>

/views/comments/create.js.rjs

page.insert_html :bottom, :comments, :partial => @comment
page[@comment].visual_effect :highlight 
page[:new_comment].reset
page.replace_html :notice, flash[:notice]
flash.discard

CommentsController#创建

 def create
   @post = Post.find(params[:post_id])
   @comment = @post.comments.create!(params[:comment])

   respond_to do |format|
     if @comment.save
       flash[:notice] = "Thanks for adding this comment" 
       format.html { redirect_to @post }
       format.js
     else
       flash[:notice] = "Make sure you include your name and a valid email address" 
       format.html { redirect_to @post }
       format.js

   end
 end
end 

1 个答案:

答案 0 :(得分:0)

创造!是一个问题因为创造!当模型无效时引发异常,这意味着它下面的respond_to代码将不会执行。

就像科里所说,取代创造!与构建。你通过rjs显示flash通知的策略可能就好了。