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Contents
require 'uri'
module Paperclip
class UrlGenerator
def initialize(attachment, attachment_options)
@attachment = attachment
@attachment_options = attachment_options
end
def for(style_name, options)
timestamp_as_needed(
escape_url_as_needed(
@attachment_options[:interpolator].interpolate(most_appropriate_url, @attachment, style_name),
options
), options)
end
private
# This method is all over the place.
def default_url
if @attachment_options[:default_url].respond_to?(:call)
@attachment_options[:default_url].call(@attachment)
elsif @attachment_options[:default_url].is_a?(Symbol)
@attachment.instance.send(@attachment_options[:default_url])
else
@attachment_options[:default_url]
end
end
def most_appropriate_url
if @attachment.original_filename.nil?
default_url
else
@attachment_options[:url]
end
end
def timestamp_as_needed(url, options)
if options[:timestamp] && timestamp_possible?
delimiter_char = url.match(/\?.+=/) ? '&' : '?'
"#{url}#{delimiter_char}#{@attachment.updated_at.to_s}"
else
url
end
end
def timestamp_possible?
@attachment.respond_to?(:updated_at) && @attachment.updated_at.present?
end
def escape_url_as_needed(url, options)
if options[:escape]
escape_url(url)
else
url
end
end
def escape_url(url)
if url.respond_to?(:escape)
url.escape
else
URI.escape(url).gsub(escape_regex){|m| "%#{m.ord.to_s(16).upcase}" }
end
end
def escape_regex
/[\?\(\)\[\]\+]/
end
end
end
Version data entries
22 entries across 20 versions & 4 rubygems