update anatomy to remove sortedm2m

anatomy/models.py

@@ -361,14 +361,23 @@ class Answer(models.Model):
 #        if self.answer:
 #            self.answer.strip()
 
+class ExamQuestionDetail(models.Model):
+    exam = models.ForeignKey("Exam", on_delete=models.CASCADE)
+    anatomyquestion = models.ForeignKey(AnatomyQuestion, on_delete=models.CASCADE)
+
+    sort_order = models.IntegerField(default=1000)
+
+    class Meta:
+        ordering = ("sort_order",)
 
 @reversion.register
 class Exam(ExamBase):
     app_name = "anatomy"
 
-    exam_questions = SortedManyToManyField(
-        AnatomyQuestion, related_name="exams", blank="true"
-    )
+    #exam_questions = SortedManyToManyField(
+    #    AnatomyQuestion, related_name="exams", blank="true"
+    #)
+    exam_questions = models.ManyToManyField("AnatomyQuestion", through=ExamQuestionDetail, related_name="exams")
     time_limit = models.IntegerField(
         help_text="Exam time limit (in seconds)", default=5400
     )