1. 09 Sep, 2015 2 commits
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  3. 27 Aug, 2015 1 commit
    • [LTI Provider] Grade passback for non-leaf blocks. · 9e6c4491
      This change allows graded assignments to be added to a campus LMS
      regardless of the granularity at which the problem sits. Previously
      a grade could only be returned if the usage ID for the problem itself
      was specified in the LTI launch.
      
      The code assumes that courses taking advantage of this functionality
      are arranged in a hiearchy (with sections being parents to verticals,
      and verticals being parents to problems). When a grading event occurs
      it traverses the parent hiearchy to identify any previous graded LTI
      launches for which the new scoring event should generate a grade
      update. It then calculates and sends scores to each of those outcome
      services.
      
      Since grade calculation is an expensive operation, the code optimizes
      the case where a problem has been added only once as a leaf unit. In
      that case it is able to behave as before, just taking the grade from
      the signal without having to calculate grades for the whole course.
      Phil McGachey committed
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