module Carrierwave::Base64::MountingHelper
Module with helper functions for mounting uploaders
Public Instance Methods
check_for_deprecations(options)
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Checks for deprecations and prints a warning if found any. @private
@param options [Hash{Symbol => Object}] the uploader options @return [void]
# File lib/carrierwave/base64/mounting_helper.rb, line 12 def check_for_deprecations(options) return unless options[:file_name].is_a?(String) warn( '[Deprecation warning] Setting `file_name` option to a string is '\ 'deprecated and will be removed in 3.0.0. If you want to keep the '\ 'existing behaviour, wrap the string in a Proc' ) end
define_writer(klass, attr, options)
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Defines an attribute writer method on the class with mounted uploader. @private
@param klass [Class] the class with mounted uploader @param attr [Symbol] the attribute for which the writer will be defined @param options [Hash{Symbol => Object}] a set of options @return [Symbol] the defined writer method name
Calls superclass method
# File lib/carrierwave/base64/mounting_helper.rb, line 43 def define_writer(klass, attr, options) klass.send(:define_method, "#{attr}=") do |data| # rubocop:disable Lint/NonLocalExitFromIterator return if data == send(attr).to_s # rubocop:enable Lint/NonLocalExitFromIterator send("#{attr}_will_change!") if respond_to?("#{attr}_will_change!") return send("remove_#{attr}=", true) if data.to_s.strip == '' return super(data) unless data.is_a?(String) && data.strip.start_with?('data') super Carrierwave::Base64::Base64StringIO.new( data.strip, Carrierwave::Base64::MountingHelper.file_name(self, options) ) end end
file_name(model_instance, options)
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Returns a file name for the uploaded file. @private
@param model_instance [Object] the model instance object @param options [Hash{Symbol => Object}] the uploader options @return [String] File name without extension
# File lib/carrierwave/base64/mounting_helper.rb, line 28 def file_name(model_instance, options) if options[:file_name].respond_to?(:call) options[:file_name].call(model_instance) else options[:file_name] end.to_s end