class Qti::V1::Models::Interactions::ChoiceInteraction

Public Class Methods

matches(node, parent) click to toggle source

This will know if a class matches

# File lib/qti/v1/models/interactions/choice_interaction.rb, line 7
def self.matches(node, parent)
  return false unless maybe_choice_type(node)
  matches = node.xpath('.//xmlns:response_lid')
  return false if matches.count > 1 || matches.empty?
  rcardinality = matches.first.attributes['rcardinality']&.value || 'Single'
  return false if rcardinality == 'Ordered'
  new(node, parent)
end
maybe_choice_type(node) click to toggle source
# File lib/qti/v1/models/interactions/choice_interaction.rb, line 16
def self.maybe_choice_type(node)
  question_type = self.question_type(node)
  return true unless question_type
  valid_types = %w[multiple_choice_question multiple_answers_question true_false_question]
  valid_types.include?(question_type)
end

Public Instance Methods

answers() click to toggle source
# File lib/qti/v1/models/interactions/choice_interaction.rb, line 23
def answers
  @answers ||= answer_nodes.map do |node|
    V1::Models::Choices::LogicalIdentifierChoice.new(node, self)
  end
end
meta_type() click to toggle source
# File lib/qti/v1/models/interactions/choice_interaction.rb, line 29
def meta_type
  meta_node = node.at_xpath(
    './/xmlns:qtimetadatafield[./xmlns:fieldlabel/text()="question_type"]'
  )
  return nil unless meta_node.present?
  type_node = meta_node.at_xpath('.//xmlns:fieldentry')
  type_node&.text()
end
scoring_data_structs() click to toggle source
# File lib/qti/v1/models/interactions/choice_interaction.rb, line 38
def scoring_data_structs
  choice_nodes = node.xpath('.//xmlns:respcondition')
  if choice_nodes.at_xpath('.//xmlns:and').present?
    scoring_data_condition(choice_nodes)
  else
    scoring_data(choice_nodes)
  end
end

Private Instance Methods

answer_nodes() click to toggle source
# File lib/qti/v1/models/interactions/choice_interaction.rb, line 49
def answer_nodes
  node.xpath('.//xmlns:response_label')
end
scoring_data(choice_nodes) click to toggle source
# File lib/qti/v1/models/interactions/choice_interaction.rb, line 61
def scoring_data(choice_nodes)
  set_var_nodes = choice_nodes.select do |choice_node|
    choice_node.at_xpath('.//xmlns:setvar')&.content&.to_f&.positive?
  end
  set_var_nodes.map do |value_node|
    ScoringData.new(value_node.at_xpath('.//xmlns:varequal').content, rcardinality)
  end
end
scoring_data_condition(choice_nodes) click to toggle source
# File lib/qti/v1/models/interactions/choice_interaction.rb, line 53
def scoring_data_condition(choice_nodes)
  answer_choices = choice_nodes.at_xpath('.//xmlns:and')
  answer_choices.children.filter('not').each(&:remove)
  answer_choices.children.map do |value_node|
    ScoringData.new(value_node.content, rcardinality)
  end
end