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Contents
module SimpleEnum
module ObjectSupport
# Convert object to symbol for use in symbolized enum
# methods. Return value is supposed to be a symbol,
# though strings should work as well.
#
# The default behaviour is to try +to_sym+ first, then
# checks if a field named +name+ exists or finally falls
# back to +to_param+ method as provided by ActiveSupport.
#
# It's perfectly for subclasses to override this method,
# to provide custom +to_enum_sym+ behaviour, e.g. if
# the symbolized value is in e.g. +title+:
#
# class FormOfAddress < ActiveRecord::Base
# attr_accessor :title
# def to_enum_sym; title; end
# end
#
# *Note*: to provide better looking methods values for +name+
# are <tt>parametereize('_')</tt>'d, so it might be a good idea to do
# the same thing in a custom +to_enum_sym+ method, like (for the
# example above):
#
# def to_enum_sym; title.parameterize('_').to_sym; end
#
# *TODO*: The current implementation does not handle nil values very
# gracefully, so if +name+ returns +nil+, it should be handled
# a bit better I suppose...
def to_enum_sym
return to_sym if respond_to?(:to_sym)
return name.to_s.parameterize('_').to_sym if respond_to?(:name)
to_param.to_sym unless blank? # fallback, unless empty...
end
end
end
Version data entries
12 entries across 12 versions & 2 rubygems