module Phlex::Table

def head_template
	if self.class.properties.any? { |p| p[:header] }
		head do
			head_row do
				self.class.properties.each do |property|
					case property[:header]
					when Proc
						instance_exec(&property[:header])
					when Symbol
						send(property[:header])
					end
				end
			end
		end
	end
end