Ajaxy image uploading with attachment_fu - undefined method ‘content type’ error
While Ajax commenting worked great in my last post, it did not apply to ajax image uploading. This is apparently because there is a security restriction with javascript preventing access to the file system. I was getting the following error in my development server (using attachment_fu to process the images).
Processing ImagesController#create (for 127.0.0.1 at 2008-06-10 22:55:13) [POST]
Session ID: BAh7CToMY3NyZl9pZCIlZGJhYTNjYTExZWE2MzdjMWQ1MGE2YjUwOWEzNjVh%0AMjA6DnJldHVybl90bzA6DHVzZXJfaWRpBiIKZmxhc2hJQzonQWN0aW9uQ29u%0AdHJvbGxlcjo6Rmxhc2g6OkZsYXNoSGFzaHsABjoKQHVzZWR7AA%3D%3D--a5f5fe97ec5e10d7a380e09ed1b0affc1f8030ce
Parameters: {"commit"=>"Create", "authenticity_token"=>"779890648cc4b51c83eea32eb9f184534d171083", "action"=>"create", "controller"=>"admin/images", "image"=>{"uploaded_data"=>"1313883603_7dc8ef882f_o.jpg"}}
User Columns (0.003101) SHOW FIELDS FROM `users`
User Load (0.001356) SELECT * FROM `users` WHERE (`users`.`id` = 1) LIMIT 1
Image Columns (0.002243) SHOW FIELDS FROM `images`
NoMethodError (undefined method `content_type' for "1313883603_7dc8ef882f_o.jpg":String):
/vendor/plugins/attachment_fu/lib/technoweenie/attachment_fu.rb:294:in `uploaded_data='
It should look like this:
Processing ImagesController#create (for 127.0.0.1 at 2008-06-10 23:02:07) [POST]
Session ID: BAh7CToMY3NyZl9pZCIlZGJhYTNjYTExZWE2MzdjMWQ1MGE2YjUwOWEzNjVh%0AMjA6DnJldHVybl90bzA6DHVzZXJfaWRpBiIKZmxhc2hJQzonQWN0aW9uQ29u%0AdHJvbGxlcjo6Rmxhc2g6OkZsYXNoSGFzaHsABjoKQHVzZWR7AA%3D%3D--a5f5fe97ec5e10d7a380e09ed1b0affc1f8030ce
Parameters: {"commit"=>"Create", "authenticity_token"=>"779890648cc4b51c83eea32eb9f184534d171083", "action"=>"create", "controller"=>"admin/images", "image"=>{"uploaded_data"=>#}}
User Columns (0.003132) SHOW FIELDS FROM `users`
User Load (0.001419) SELECT * FROM `users` WHERE (`users`.`id` = 1) LIMIT 1
User this solution:
It involves repsonds_to_parent and using iframes.
However, make sure to change the following…
<% form_for(:asset, :url =>formatted_assets_path(:format => 'js'), :html => { :multipart => true, :target => 'upload_frame'}) do |form| %>
to…
<% form_for(:asset, :url => assets_path + ".js", :html => { :multipart => true, :target => 'upload_frame'}) do |form| %>
That should do the trick.
Alternative links/solutions:
Another helpful link