Module: Og::MetaUtils

Defined in:
lib/og/meta.rb

Overview

Some useful meta-language utilities.

Class Method Summary collapse

Class Method Details

.expand(klass) ⇒ Object

Convert the klass to a string representation The leading module if available is removed. – gmosx, FIXME: unify with the ogutils.encode method? ++



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# File 'lib/og/meta.rb', line 25

def self.expand(klass)
	return klass.name.gsub(/^.*::/, '').gsub(/::/, '_').downcase
end

.resolve_class(name, klass) ⇒ Object

Infer the target klass for a relation. When defining relations, tha target class is typically given. Some times in order to avoid forward declarations a symbol is given instead of a class. Other times on class is given at all, and the inflection mechanism is used to infer the class name.



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# File 'lib/og/meta.rb', line 35

def self.resolve_class(name, klass)
	klass ||= N::Inflector.camelize(name)
	
	return klass if klass.is_a?(Class)
	
	unless klass.is_a?(String) or klass.is_a?(Symbol)
		raise 'Invalid class definition' 
	end

	unless Object.const_get(klass.intern)
		# Forward declaration.
		Object.class_eval("class #{klass}; end")
	end

	return Object.const_get(klass)
end