Class: ActiveRecordSurvey::NodeValidation::MinimumAnswer

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

Overview

Ensure the a minimum 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 minimum number of answers are made



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

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