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Contents
# frozen_string_literal: true
#
# Take an existing either paperclip object or database field and return
# a fully qualified cdn url for that file.
#
# If the system configuration parameter for the url is not set, then simply return the value.
#
# If it is set, then replace the prefix of the URL defined by the boundry of class name, so account_report will be
# https://original.amazon.com/account_report/id/report.xlsx
#
# will be transposed to:
# https://cnd.apazon.com/account_report/id/report.xlsx
#
# To use this, first include CdnUrl in your class and then when you want the URL of an object call
# report.cdn_file_url instead of report.file_url.
#
module CdnUrl
extend ActiveSupport::Concern
# @abstract Catch methods started with `cdn_` and respond to those requests if there is a
# matching method ending in `_url`
def method_missing(method, *args)
if method.to_s.start_with? 'cdn_'
url = if args.blank?
send method.to_s.sub(/^cdn_/, '').to_sym
else
send method.to_s.sub(/^cdn_/, '').to_sym, *args
end
cdn_url = SystemConfiguration.cdn_url
if [cdn_url.present?, url.present?].all?
model_name = "#{self.class.to_s.underscore}s"
if url.include? "/#{model_name}/"
"#{cdn_url}/#{model_name}/#{url.split("/#{model_name}/").last}"
else
url
end
else
url
end
else
super
end
end
def respond_to_missing?(method_name, include_private = false)
super || method_name.to_s.start_with?('cdn_')
end
def respond_to?(method, include_private = false)
super || method.to_s.start_with?('cdn_')
end
end
Version data entries
27 entries across 27 versions & 1 rubygems