Calculation (question trait)

A question trait which performs some calculations before or after a question is rendered.

Format

calculation before
  block
end

calculation after
  block
end

• before - denotes that this calculation block should be executed before the question is rendered.
• after - denotes that this calculation block should be executed after a response is validated.
• block - the block contains expressions, assignments, and control flow statements.
• end - you must terminate a block of calculations with the keyword end.

Detailed Description

Trait Options

None

Can Be Used With:

• Multiple Choice Question
• Yes-No Question
• True-False Question
• Multiple Answer Question
• Time-of-Day Question
• Date Question (Not Implemented)
• Nested Choice Question (Not Implemented)
• Open-Ended Question
• Text-Area Question
• Integer Input Question
• Decimal Input Question
• Currency Input Question
• Scenario
• Dummy Question

Example

YesNo DepartEarly
  text "Would you depart at #(depart_early)?"
  calculation before
    depart_early = DepartTime - 30
    depart_early = convert_mins_to_time(depart_early)
  end

TimeOfDay DepartTime
  text "What time did you depart for work today?"
  calculation after
    depart_early = DepartTime - 30
    depart_late = DepartTime + 30
  end

Related Pages

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