Module: Arrow::Template::ConditionalDirective

Included in:

ElsifDirective, IfDirective, UnlessDirective

Defined in:

lib/arrow/template/nodes.rb

Overview

Mixin which adds the notion of boolean evaluability to a directive.

Constant Summary

SVNRev =

SVN Revision

%q$Rev$

SVNId =

SVN Id

%q$Id$

Instance Method Summary

• #evaluate(template, scope) ⇒ Object

  Returns true if this Directive, in the context of the given template (an Arrow::Template) and scope (a Binding object), should be considered “true”.

• #is_rendering_node? ⇒ Boolean

  Returns true for nodes which generate output themselves (as opposed to ones which generate output through subnodes).

Instance Method Details

#evaluate(template, scope) ⇒ Object

Returns true if this Directive, in the context of the given template (an Arrow::Template) and scope (a Binding object), should be considered “true”.

# File 'lib/arrow/template/nodes.rb', line 722

def evaluate( template, scope )
  rval = self.call_methodchain( template, scope )

  #self.log.debug "Methodchain evaluated to %s: %p" %
  #  [ rval ? "true" : "false", rval ]
  return rval ? true : false
end

#is_rendering_node? ⇒ Boolean

Returns true for nodes which generate output themselves (as opposed to ones which generate output through subnodes). This is used for eliding blank lines from the node tree.

# File 'lib/arrow/template/nodes.rb', line 714

def is_rendering_node?
  false
end