Question

我正在研究Ruby on Rails教程。我有异步按钮工作。有趣的是，当我点击按钮时，每个javascript调用都会被连续两次调用。关于如何制作它的任何想法只发送一个请求？这是我的日志

Started POST "/tag_user_relationships/123" for
127.0.0.1 at 2011-06-13 21:18:59 -0700   Processing by TagUserRelationshipsController#destroy as JS   Parameters: {"utf8"=>"✓", "authenticity_token"=>"goedvibRxKtDRiAufp1ThWJP0rRBU2cMH2xp7qodKws=", "commit"=>"Unfollow", "id"=>"123"}   User Load (0.2ms)  SELECT `users`.* FROM `users` WHERE `users`.`id` = 2 LIMIT 1   TagUserRelationship Load (0.2ms)  SELECT `tag_user_relationships`.* FROM `tag_user_relationships` WHERE `tag_user_relationships`.`id` = 123 LIMIT 1   Tag Load (0.2ms)  SELECT `tags`.* FROM `tags` WHERE `tags`.`id`
= 9 LIMIT 1   TagUserRelationship Load (0.3ms)  SELECT `tag_user_relationships`.* FROM `tag_user_relationships` WHERE `tag_user_relationships`.`tag_id` = 9 AND (`tag_user_relationships`.user_id
= 2) LIMIT 1   SQL (0.1ms)  BEGIN   AREL (0.2ms)  DELETE FROM `tag_user_relationships` WHERE `tag_user_relationships`.`id` = 123   SQL (0.4ms)  COMMIT   SQL (0.4ms)  SELECT COUNT(*) FROM `users` INNER JOIN `tag_user_relationships` ON `users`.id = `tag_user_relationships`.user_id WHERE ((`tag_user_relationships`.tag_id = 9))   SQL (0.3ms)  SELECT COUNT(*) FROM `tags` INNER JOIN `tag_user_relationships` ON `tags`.id
= `tag_user_relationships`.tag_id WHERE ((`tag_user_relationships`.user_id = 2)) Rendered tag_user_relationships/_form.js.erb (15.8ms) Rendered tags/_follow.html.erb (2.1ms) Rendered tag_user_relationships/destroy.js.erb (20.3ms) Completed 200 OK in 138ms (Views: 28.1ms | ActiveRecord: 2.3ms)


Started POST "/tag_user_relationships/123" for
127.0.0.1 at 2011-06-13 21:18:59 -0700   Processing by TagUserRelationshipsController#destroy as JS   Parameters: {"utf8"=>"✓", "authenticity_token"=>"goedvibRxKtDRiAufp1ThWJP0rRBU2cMH2xp7qodKws=", "id"=>"123"}   User Load (0.2ms)  SELECT `users`.* FROM `users` WHERE `users`.`id` = 2 LIMIT 1   TagUserRelationship Load (0.2ms)  SELECT `tag_user_relationships`.* FROM `tag_user_relationships` WHERE `tag_user_relationships`.`id` = 123 LIMIT 1 Completed 404 Not Found in 70ms

ActiveRecord::RecordNotFound (Couldn't find TagUserRelationship with ID=123): app/controllers/tag_user_relationships_controller.rb:14:in `destroy'

Rendered /Users/me/.rvm/gems/ruby-1.9.2-p136@rails3tutorial/gems/actionpack-3.0.8/lib/action_dispatch/middleware/templates/rescues/_trace.erb (1.0ms) Rendered /Users/me/.rvm/gems/ruby-1.9.2-p136@rails3tutorial/gems/actionpack-3.0.8/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (153.6ms) Rendered /Users/me/.rvm/gems/ruby-1.9.2-p136@rails3tutorial/gems/actionpack-3.0.8/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (160.2ms)

这是我的观点

$("#<%= "follower_info#{@tag.id}" %>").html("<%=escape_javascript(pluralize(@tag.followers.count,'follower'))%>");     
var link = $('<a>').attr('href',"<%=user_tags_path(current_user) %>").text("<%= escape_javascript(pluralize(current_user.beats.count,'tag')) %>");
$("#<%= "user#{current_user.id}_following" %>").html(link); $("#<%= "follow_form#{@tag.id}" %>").html("<%= escape_javascript("#{render('tags/unfollow', :tag => @tag)}").html_safe %>");

我的控制器

  def create
    @tag = Tag.find(params[:tag_user_relationship][:tag_id])
    current_user.follow_tag!(@tag)
    respond_to do |format|
      format.html { redirect_to @tag }
      format.js
    end   
  end

Answer 1

我最近遇到了同样的问题。您是否有可能安装了ajax gem并在Javascripts文件夹中包含了jquery代码？如果是这样，将进行两次通话。

JS请求连续两次被调用

1 个答案: