Class: ActiveRecordSurvey::NodeValidation::MaximumAnswer

Inherits:
ActiveRecordSurvey::NodeValidation show all
Defined in:
lib/active_record_survey/node_validation/maximum_answer.rb

Overview

Ensure the a maximum number of answers are made

Instance Method Summary collapse

Methods inherited from ActiveRecordSurvey::NodeValidation

#validate_node

Instance Method Details

#validate_instance_node(instance_node, question_node = nil) ⇒ Object

Validate the instance_node to ensure a maximum number of answers are made



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# File 'lib/active_record_survey/node_validation/maximum_answer.rb', line 5

def validate_instance_node(instance_node, question_node = nil)
	# Only makes sense for questions to have maximum 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 => ["MAXIMUM_ANSWER"] } } if !is_valid

	is_valid
end