Module: ROXML::InstanceMethods::Construction

Defined in:
lib/roxml.rb

Instance Method Summary collapse

Instance Method Details

#xml_initialize ⇒ Object

xml_initialize is called at the end of the #from_xml operation on objects where xml_construct is not in place. Override xml_initialize in order to establish post-import behavior. For example, you can use xml_initialize to map xml attribute values into the object standard initialize function, thus enabling a ROXML object to freely be either xml-backed or instantiated directly via #new. An example of this follows:

class Measurement include ROXML

xml_reader :units, :attr
xml_reader :value, :content

def xml_initialize
 # the object is instantiated, and all xml attributes are imported
 # and available, i.e., value and units below are the same value and units
 # found in the xml via the xml_reader declarations above.
 initialize(value, units)
end

def initialize(value, units = 'pixels')
 @value = Float(value)
 @units = units.to_s
 if @units.starts_with? 'hundredths-'
   @value /= 100
   @units = @units.split('hundredths-')[1]
 end
end

end

#xml_initialize may be written to take arguments, in which case extra arguments from from_xml will be passed into the function.



72
73
 
# File 'lib/roxml.rb', line 72

def xml_initialize
end