Class: EdXmlRenderer

Inherits:
Object
  • Object
show all
Defined in:
lib/ruql/renderers/edxml_renderer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(quiz, options = {}) ⇒ EdXmlRenderer

Returns a new instance of EdXmlRenderer.



5
6
7
8
9
10
 
# File 'lib/ruql/renderers/edxml_renderer.rb', line 5

def initialize(quiz,options={})
  @only_question = options.delete('n') || options.delete('name')
  @output = ''
  @b = Builder::XmlMarkup.new(:target => @output, :indent => 2)
  @quiz = quiz
end

Instance Attribute Details

#output ⇒ Object (readonly)

Returns the value of attribute output.



4
5
6
 
# File 'lib/ruql/renderers/edxml_renderer.rb', line 4

def output
  @output
end

Instance Method Details

#render(thing) ⇒ Object 



12
13
14
15
16
17
18
19
 
# File 'lib/ruql/renderers/edxml_renderer.rb', line 12

def render(thing)
  case thing
  when MultipleChoice,SelectMultiple,TrueFalse then render_multiple_choice(thing)
  when FillIn then render_fill_in(thing)
  else
    raise "Unknown question type: #{thing}"
  end
end

#render_fill_in(question) ⇒ Object 



32
33
34
 
# File 'lib/ruql/renderers/edxml_renderer.rb', line 32

def render_fill_in(question)
  raise "Not yet implemented for edXML"
end

#render_multiple_choice(question) ⇒ Object 



36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
 
# File 'lib/ruql/renderers/edxml_renderer.rb', line 36

def render_multiple_choice(question)
  @b.problem do
    # if question text has explicit newlines, use them to separate <p>'s
    if question.raw?
      @b.p { |p| p << question.question_text }
    else
      question.question_text.lines.map(&:chomp).each do |line|
        if question.raw? then @b.p { |p| p << line } else @b.p(line) end
      end
    end
    @b.multiplechoiceresponse do
      @b.choicegroup :type => 'MultipleChoice' do
        question.answers.each do |answer|
          if question.raw?
            @b.choice(:correct => answer.correct?) do |choice|
              choice << answer.answer_text
              choice << "\n"
            end
          else
            @b.choice answer.answer_text, :correct => answer.correct?
          end
        end
      end
    end
    @b.solution do
      @b.div :class => 'detailed_solution' do
        @b.p 'Explanation'
        if question.raw?
          @b.p { |p| p << question.correct_answer.explanation }
        else
          @b.p question.correct_answer.explanation
        end
      end
    end
  end
end

#render_quiz ⇒ Object 



21
22
23
24
25
26
27
28
29
30
 
# File 'lib/ruql/renderers/edxml_renderer.rb', line 21

def render_quiz
  # entire quiz can be in one question group, as long as we specify
  # that ALL question from the group must be used to make the quiz.
  question_list = if @only_question
                  then @quiz.questions.select { |q| q.name == @only_question }
                  else @quiz.questions
                  end
  question_list.each { |question| render(question) }
  @output
end