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POUsing Paperclip with Padrino
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  1. POUsing Paperclip with Padrino
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    copied!<p>Background: I'm building a simple blog using Padrino, Ruby 1.9.2, HAML, and Heroku. I want the posts index to have a magazine-like look to it. For each post in the index, the user should see titles, content teasers, and images. My problem is with attaching the images.</p> <p>Problem: I've been trying to use the Paperclip gem to attach an image to each post. Heroku will fish the actual image from an Amazon S3 bin. So far, when I try to run a migration, I get the error:</p> <pre><code>$ .../base.rb:1088:in `method_missing': undefined method `has_attached_file' for #&lt;Class:0xa672140&gt; (NoMethodError) </code></pre> <p>It looks like Paperclip just won't load, but there's where I get stuck.</p> <p>Details: --Q: What am I doing when I "try to run a migration"? --A: I put the following into the migrations folder</p> <pre><code>class AddPictureToPost &lt; ActiveRecord::Migration def self.up change_table :posts do |t| t.has_attached_file :picture end end def self.down drop_attached_file :posts, :picture end end </code></pre> <p>then run "padrino rake ar:migrate"</p> <p>--Q: Do I have Paperclip listed in the Gemfile? --A: Yes.</p> <p>--Q: What does the post model look like? --A:</p> <pre><code>class Post &lt; ActiveRecord::Base has_attached_file :picture, :storage =&gt; :s3, :bucket =&gt; 'blog_images', :s3_credentials =&gt; { :access_key_id =&gt; ENV['S3_KEY'], :secret_access_key =&gt; ENV['S3_SECRET'] } end </code></pre> <p>--Q: What does the app.rb look like? --A:</p> <pre><code>class Blog &lt; Padrino::Application register Padrino::Rendering register Padrino::Mailer register Padrino::Helpers enable :sessions get '/' do haml :index end end </code></pre> <p>--Q: What does boot.rb look like? --A:</p> <pre><code>PADRINO_ENV = ENV["PADRINO_ENV"] ||= ENV["RACK_ENV"] ||= "development" unless defined?(PADRINO_ENV) PADRINO_ROOT = File.expand_path('../..', __FILE__) unless defined? (PADRINO_ROOT) require 'rubygems' unless defined?(Gem) require 'bundler/setup' Bundler.require(:default, PADRINO_ENV) Padrino.before_load do end Padrino.after_load do end Padrino.load! </code></pre> <p>--Q: What does the full error output look like? --A:</p> <pre><code>jared:~/blog$ padrino rake ar:migrate =&gt; Executing Rake ar:migrate ... /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-3.1.3/lib/ active_record/base.rb:1088:in `method_missing': undefined method `has_attached_file' for #&lt;Class:0xa1ffb30&gt; (NoMethodError) from /home/jared/isthmus2/app/models/post.rb:2:in `&lt;class:Post&gt;' from /home/jared/isthmus2/app/models/post.rb:1:in `&lt;top (required)&gt;' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:240:in `require' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:240:in `block in require' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:223:in `block in load_dependency' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:640:in `new_constants_in' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:223:in `load_dependency' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:240:in `require' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/reloader.rb:148:in `safe_load' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/loader.rb:162:in `block in require_dependencies' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/loader.rb:160:in `each' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/loader.rb:160:in `require_dependencies' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/application.rb:34:in `inherited' from /home/jared/blog/app/app.rb:1:in `&lt;top (required)&gt;' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:240:in `require' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:240:in `block in require' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:223:in `block in load_dependency' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:640:in `new_constants_in' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:223:in `load_dependency' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:240:in `require' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/reloader.rb:148:in `safe_load' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/loader.rb:162:in `block in require_dependencies' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/loader.rb:160:in `each' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/loader.rb:160:in `require_dependencies' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/mounter.rb:148:in `locate_app_object' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/mounter.rb:30:in `initialize' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/mounter.rb:221:in `new' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/mounter.rb:221:in `mount' from /home/jared/blog/config/apps.rb:34:in `&lt;top (required)&gt;' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:240:in `require' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:240:in `block in require' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:223:in `block in load_dependency' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:640:in `new_constants_in' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:223:in `load_dependency' from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/ active_support/dependencies.rb:240:in `require' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/reloader.rb:148:in `safe_load' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/loader.rb:162:in `block in require_dependencies' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/loader.rb:160:in `each' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/loader.rb:160:in `require_dependencies' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/loader.rb:70:in `block in load!' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/loader.rb:70:in `each' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/loader.rb:70:in `load!' from /home/jared/blog/config/boot.rb:29:in `&lt;top (required)&gt;' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/cli/base.rb:56:in `require' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/cli/base.rb:56:in `block in rake' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/cli/base.rb:140:in `capture' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/lib/ padrino-core/cli/base.rb:56:in `rake' from /usr/local/lib/ruby/gems/1.9.1/gems/thor-0.14.6/lib/thor/task.rb: 22:in `run' from /usr/local/lib/ruby/gems/1.9.1/gems/thor-0.14.6/lib/thor/ invocation.rb:118:in `invoke_task' from /usr/local/lib/ruby/gems/1.9.1/gems/thor-0.14.6/lib/thor.rb: 263:in `dispatch' from /usr/local/lib/ruby/gems/1.9.1/gems/thor-0.14.6/lib/thor/base.rb: 389:in `start' from /usr/local/lib/ruby/gems/1.9.1/gems/padrino-core-0.10.5/bin/ padrino:9:in `&lt;top (required)&gt;' from /usr/local/bin/padrino:19:in `load' from /usr/local/bin/padrino:19:in `&lt;main&gt;' </code></pre> <p>If you've read this far...THANKS! I hope you can help me shed some light on this. </p>
 

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