paperclip

I have watermarks, galleries, and photos models. Gallery belongs_to Watermark Photo belongs_to Gallery class Photo < ActiveRecord::Base before_save :save_dimensions, :set_orientation belongs_to :gallery has_attached_file :image, :processors => [:watermark], :styles => { :thumbnail => ["80x80>"], :small => { :geometry => "200x200>", :watermark_path => "#{gallery.watermark.image.path(:small)}", :position => "Center" }, :medium => { :geometry => "400x400>", :watermark_path => "#{gallery.watermark.image.path(:medium)}", :position => "Center" }, :large => { :geometry => "600x600>", :watermark_path

I have a model that has paperclip attachments. The model might be used in multiple rails apps I need to return a full (non-relative) url to the attachment as part of a JSON API being consumed elsewhere. I'd like to abstract the paperclip aspect and have a simple virtual attribute like this: def thumbnail_url self.photo.url(:thumb) end This however only gives me the relative path. Since it's in the model I can't use the URL helper methods, right? What would be a good approach to prepending the application root url since I don't have helper support? I would like to avoid hardcoding something or

I think I have a bit of a chicken and egg problem. I would like to set the content_type of a file uploaded via Paperclip. The problem is that the default content_type is only based on extension, but I'd like to base it on another module. I seem to be able to set the content_type with the before_post_process class Upload < ActiveRecord::Base has_attached_file :upload before_post_process :foo def foo logger.debug "Changing content_type" #This works self.upload.instance_write(:content_type,"foobar") # This fails because the file does not actually exist yet self.upload.instance_write(:content_type

I'm trying to make a create product page in rails. This includes adding multiple images and text fields. I have one model for products and one for photos. I'm using the paperclip gem for photo upload. But I get no picture when I view product page. Photos are not being saved to database. P.S. I use HAML. app/views/products/show.html.haml %b Name = @product.name %br %b Description = @product.description %br - @product.photos.each do |photo| = image_tag photo.image.url app/controllers/products_controller class ProductsController < ApplicationController before_filter :require_login before_filter

I'm trying to upload a file to s3 using paperclip and get this error when making a new object and referencing the variable: the aws-s3 gem is installed the s3.yml file has the correct credentials ie: a = Attachment.new a.file NameError: uninitialized constant AWS::S3::Connection from /Library/Ruby/Gems/1.8/gems/aws-s3-0.6.2/lib/aws/s3/extensions.rb:206:in `const_missing' from /Library/Ruby/Gems/1.8/gems/aws-s3-0.6.2/lib/aws/s3.rb:32 from /Library/Ruby/Gems/1.8/gems/aws-s3-0.6.2/lib/aws/s3.rb:31:in `class_eval' from /Library/Ruby/Gems/1.8/gems/aws-s3-0.6.2/lib/aws/s3.rb:31 from /Library/Ruby

Paperclip produces this error, after checking out the plugin's rails3 branch. My Gemfile has following line: gem 'paperclip', :git => 'http://github.com/thoughtbot/paperclip.git', :branch => 'rails3' And the error message is: NoMethodError: undefined method `has_attached_file' for #<Class:0x2a50530> Update 06-21-10: the thoughtbot version has been fixed. I had to add Paperclip::Railtie.insert to my application.rb at the end of class Application < Rails::Application to get it to work correctly. I have deleted my fork since the official repo is working. Hope that helps someone. You will also

Paperclip has validator methods for validating the presence, size, and content-type of files. But is there a way to validate the contents of the file before the record is saved? I tried doing validate :my_method and opening the file from [attachment].path in my_method , but of course that fails because the attachment hasn't been moved to its final resting place in the file system before the record is saved. Writing a custom Paperclip post-processor seemed like an option because it has access to the File object belonging to the attachment before the record is saved, but a failing processor won

When you set a validation message in paperclip, such as validates_attachment_presence, :image, :message => 'xxxx' The custom message comes automatically prefixed with the name of the field, even though it has been overwritten with the :message . How do you totally override the message and make it totally custom? Edit: typo Not a real solution but a Easy one is to skip paperclip validation and write custom one. validate :check_content_type def check_content_type if !['image/jpeg', 'image/gif','image/png'].include?(self.image_content_type) errors.add_to_base("Image '#{self.image_file_name}' is