Module: Zena::Acts::Enrollable::ZafuMethods

Includes:
Common
Defined in:
lib/zena/acts/enrollable.rb

Overview

Common

Instance Method Summary collapse

Methods included from Common

#get_class

Instance Method Details

#node_context_from_signature(signature) ⇒ Object

This is used to resolve ‘this’ (current NodeContext), ‘@node’ as NodeContext with class Node, ‘@page’ as first NodeContext of type Page, @letter, etc. We overwrite Zafu’s version to cope with our anonymous classes.



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# File 'lib/zena/acts/enrollable.rb', line 152

def node_context_from_signature(signature)
  return nil unless signature.size == 1
  ivar = signature.first
  if ivar == 'this'
    super
  elsif ivar[0..0] == '@' && klass = get_class(ivar[1..-1].capitalize)

    if klass <= Node
      # We have to get 'up' class with a little more skill because of enrollable's anonymous classes.
      kpath = klass.kpath
      node = self.node
      while node &&
            (node.list_context? || !(node.klass <= Node) || !(node.klass.kpath =~ /^#{kpath}/))
        node = node.up
      end
    else
      node = self.node(klass)
    end

    if node
      {:class => node.klass, :method => node.name}
    else
      nil
    end
  else
    nil
  end
end