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module Technoweenie module AttachmentFu module InstanceMethods def set_from_url(source_url) source_uri = URI.parse(source_url) self.temp_data = source_uri.read temp_file = File.open(temp_path, 'r') self.content_type = File.mime_type?(temp_file) self.filename = clean_filename_from_uri(source_uri) end def clean_filename_from_uri(uri) result = basename_from_uri(uri).inspect if !result.include?('.') extension = extension_for_mimetype(content_type) result += ".#{extension}" if extension end result end def basename_from_uri(uri) if !uri.path.blank? && !File.basename(uri.path).blank? File.basename(uri.path) else 'file' end end def extension_for_mimetype(mime_type) File.extensions.reject {|key, value| value != mime_type || key == :jpe }.keys.first end end end end

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