Contents

module DynamicPaperclip
  class Attachment < Paperclip::Attachment
    attr_reader :dynamic_styles

    def initialize(name, instance, options = {})
      super

      @dynamic_styles = {}

      # Add existing dynamic styles
      if instance.persisted?
        path_with_wildcard = path('dynamic_*')
        style_position = path_with_wildcard.index('dynamic_*')

        Dir.glob(path_with_wildcard) do |file|
          add_dynamic_style! file[style_position..-1].split('/').first
        end
      end
    end

    def styles
      super.merge dynamic_styles
    end

    def process_dynamic_style(definition)
      style_name = StyleNaming.dynamic_style_name_from_definition(definition)

      add_dynamic_style! style_name
      reprocess! style_name
    end

    def dynamic_url(definition)
      raise DynamicPaperclip::Errors::SecretNotSet, "No secret has been configured. Please run the dynamic_paperclip:install generator." unless DynamicPaperclip.config.secret.present?

      escaped_style_name = StyleNaming.dynamic_style_name_from_definition(definition)
      unescaped_style_name = StyleNaming.dynamic_style_name_from_definition(definition, false)

      url = url(unescaped_style_name)

      delimiter_char = url.match(/\?.+=/) ? '&' : '?'

      "#{url}#{delimiter_char}s=#{UrlSecurity.generate_hash(escaped_style_name)}"
    end

    private

      def add_dynamic_style!(name)
        @dynamic_styles[name.to_sym] = Paperclip::Style.new(name, StyleNaming.style_definition_from_dynamic_style_name(name), self)
      end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
dynamic_paperclip-0.0.3	lib/dynamic_paperclip/attachment.rb