class PictureUploader < CarrierWave::Uploader::Base # Include RMagick or MiniMagick support: # include CarrierWave::RMagick include CarrierWave::MiniMagick # Choose what kind of storage to use for this uploader: storage :file # storage :fog # Override the directory where uploaded files will be stored. # This is a sensible default for uploaders that are meant to be mounted: def store_dir "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}" end # Provide a default URL as a default if there hasn't been a file uploaded: def default_url(*args) # For Rails 3.1+ asset pipeline compatibility: ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_')) end # Process files as they are uploaded: # process scale: [200, 300] # # def scale(width, height) # # do something # end # Create different versions of your uploaded files: # version :thumb do # process resize_to_fit: [50, 50] # end # Add an allowlist of extensions which are allowed to be uploaded. # For images you might use something like this: # def extension_allowlist # %w(jpg jpeg gif png) # end # Override the filename of the uploaded files: # Avoid using model.id or version_name here, see uploader/store.rb for details. # def filename # "something.jpg" if original_filename # end end