def validate_instance_node(instance_node, question_node = nil)
			# Only makes sense for questions to have minimum answers
			if !question_node.class.ancestors.include?(::ActiveRecordSurvey::Node::Question)
				return false 
			end

			instance = instance_node.instance

			# Go through the node_map of this node
			total_answered = question_node.node_maps.collect { |question_node_map|
				# Get all children until a childs node isn't an answer
				question_node_map.children.collect { |i|
					i.children_until_node_not_ancestor_of(::ActiveRecordSurvey::Node::Answer)
				}.flatten.collect { |i|
					i.node.is_answered_for_instance?(instance)
				}
			}.flatten.select { |i| i }.count

			is_valid = (total_answered >= self.value.to_i)

			instance_node.errors[:base] << { :nodes => { question_node.id => ["MINIMUM_ANSWER"] } } if !is_valid

			is_valid
		end
def validate_instance_node(instance_node, question_node = nil)
			# Only makes sense for questions to have minimum answers
			if !question_node.class.ancestors.include?(::ActiveRecordSurvey::Node::Question)
				return false 
			end

			instance = instance_node.instance

			# Go through the node_map of this node
			total_answered = question_node.node_maps.collect { |question_node_map|
				# Get all children until a childs node isn't an answer
				question_node_map.children.collect { |i|
					i.children_until_node_not_ancestor_of(::ActiveRecordSurvey::Node::Answer)
				}.flatten.collect { |i|
					i.node.is_answered_for_instance?(instance)
				}
			}.flatten.select { |i| i }.count

			is_valid = (total_answered >= self.value.to_i)

			instance_node.errors[:base] << { :nodes => { question_node.id => ["MINIMUM_ANSWER"] } } if !is_valid

			is_valid
		end
Validate the instance_node to ensure a minimum number of answers are made