fix for workout resolution in OpenDSA (multiple workouts per page)

Author: s-edwards

app/controllers/exercises_controller.rb

@@ -633,8 +633,12 @@ def evaluate
       end
     end
 
-    if @workout_offering && @workout.nil?
-      @workout = @workout_offering.workout
+    if @workout.nil?
+      if @workout_offering
+        @workout = @workout_offering.workout
+      elsif params[:workout_id]
+        @workout = Workout.find_by(id: params[:workout_id])
+      end
     end
 
     if @workout.nil? && session[:current_workout]

app/views/exercises/practice.html.haml

@@ -41,6 +41,7 @@
       workout_offering_id: @workout_offering.id,
       lti_launch: @lti_launch) : exercise_evaluate_path(@exercise_version.exercise,
     exercise_version_id: @exercise_version.id,
+    workout_id: @workout.andand.id,
     feedback_return: true, lti_launch: @lti_launch,
     lis_result_sourcedid: @workout_score.andand.lis_result_sourcedid,
     lis_outcome_service_url: @workout_score.andand.lis_outcome_service_url)), remote: true do |f|