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PONoHandlerError with Rails3 and Paperclip
 

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  1. PONoHandlerError with Rails3 and Paperclip
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    <p>So this is my first question on StackOverflow. </p> <p>I'm trying to implement Paperclip on Rails 3.2.3, and after clicking "submit" to create a profile with an uploaded image, I get:</p> <blockquote> <p>Paperclip::AdapterRegistry::NoHandlerError in UsersController#update</p> <p>No handler found for "Screen Shot 2012-09-01 at 11.03.43 AM.png"</p> </blockquote> <p>My server log reads,</p> <blockquote> <p>Paperclip::AdapterRegistry::NoHandlerError (No handler found for "Screen Shot 2012-09-01 at 11.03.43 AM.png"): app/controllers/users_controller.rb:65:in <code>block in update' app/controllers/users_controller.rb:64:in</code>update'</p> </blockquote> <p>In my User model, I have</p> <pre><code>attr_accessible :avatar has_attached_file :avatar, :styles =&gt; { :large =&gt; "500x500&gt;", :medium =&gt; "213x213&gt;", # profile image :thumb =&gt; "50x50&gt;", :smaller =&gt; "30x30&gt;" }, :processors =&gt; [:cropper], # tells paperclip how to crop the image :storage =&gt; :s3, :s3_credentials =&gt; "#{Rails.root}/config/s3.yml", # TODO :path =&gt; ":attachment/:id/:style/:basename.:extension", :bucket =&gt; 'eventsbucket' </code></pre> <p>The error persists whether I include the S3 info or not. In my migration I have,</p> <pre><code>class AddAvatarColumnsToUsers &lt; ActiveRecord::Migration def self.up add_attachment :users, :avatar end def self.down remove_attachment :users, :avatar end end </code></pre> <p>Lastly, in my Users controller update action, I have</p> <pre><code>def update respond_to do |format| if @user.update_attributes(params[:user]) sign_in @user format.html { redirect_to @user, notice: 'Profile Successfully Updated' } format.json { head :no_content } else format.html { render action: "edit" } format.json { render json: @user.errors, status: :unprocessable_entity } end end end </code></pre> <p>In my Gemfile I have gem "paperclip", "~> 3.1.4" (UPDATE: I've since pulled Paperclip straight from thoughtbot and problem persists). I've run bundle install. I've run db:migrate. I've read <a href="https://stackoverflow.com/questions/10033425/paperclip-exception-paperclipadapterregistrynohandlererror">this StackOverflow entry</a>, but the error persists whether I include "multipart => true" or not. When I tried the <a href="http://emersonlackey.com/screencasts/rails-3-with-paperclip.mov" rel="nofollow noreferrer">Emerson Lackey Tutorial</a>, it worked up to the point where he tried to display the output of the "5.times..." command.</p> <p>I'm interested in both getting Paperclip to work and understanding just what a "NoHandlerError" is and how to avoid it in the future.</p>
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    1. COWhat about http://stackoverflow.com/questions/10033425/paperclip-exception-paperclipadapterregistrynohandlererror
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    2. COLooks promising, when I get some time I will check further into that just for curiosity sake. Thanks for the heads up.
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