JS Request getting called twice in a row - ruby-on-rails

Question

I'm working on the Ruby on Rails Tutorial. I have the asynchronous follow buttons working. Interestingly, each of the javascript calls is getting called twice in a row when I click the button. Any thoughts on how I make it only send one request? Here is my log
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)
And here is my view
$("#<%= "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 %>");
And my controller
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

I had this same issue recently. Is there any chance that you installed the ajax gem and also included the jquery code in the Javascripts folder? If so, the calls will be made twice.