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Contents
require 'pod4/errors'
require 'pod4/metaxing'
module Pod4
##
# A mixin to give you some more options to control how Pod4 maps the interface to the model.
#
# Eventually we will actually have typecasting in here. For now all this allows you to do is
# enforce an encoding -- which will be of use if you are dealing with MSSQL, or with certain
# interfaces which appear to deal with the code page poorly:
#
# class FOo < Pod4::Model
# include Pod4::TypeCasting
#
# force_encoding Encoding::UTF-8
#
# ...
# end
#
module TypeCasting
##
# A little bit of magic, for which I apologise.
#
# When you include this module it actually adds the methods in ClassMethods to the class as if
# you had called `extend TypeCasting:ClassMethds` *AND* adds the methods in InstanceMethods as
# if you had written `prepend TypeCasting::InstanceMethods`.
#
# In my defence: I didn't want to have to make you remember to do that...
#
def self.included(base)
base.extend ClassMethods
base.send(:prepend, InstanceMethods)
end
module ClassMethods
include Metaxing
def force_encoding(enc)
raise Pod4Error, "Bad encoding" unless enc.kind_of? Encoding
define_class_method(:encoding){enc}
end
def encoding; nil; end
end
##
module InstanceMethods
def map_to_model(ot)
enc = self.class.encoding
ot.each do |_,v|
v.force_encoding(enc) if v.kind_of?(String) && enc
end
super(ot)
end
end
##
end
end
Version data entries
7 entries across 7 versions & 1 rubygems