Fix field AssessmentPart.criterion to point to Criterion table.

Migration 0020 incorrectly altered the field to point to the
CriterionOption table.

TNL-826

openassessment/assessment/migrations/0020_assessmentpart_criterion_not_null.py

@@ -9,6 +9,8 @@ class Migration(SchemaMigration):
 
     def forwards(self, orm):
         # Make the AssessmentPart.criterion field NOT nullable
+        # Bug: The field was also (incorrectly) altered to point to the CriterionOption table instead of the Criterion
+        # table. This is fixed in migration 0024.
         db.alter_column('assessment_assessmentpart', 'criterion_id',
             self.gf('django.db.models.fields.related.ForeignKey')(
                 related_name='+', null=False, to=orm['assessment.CriterionOption']
@@ -94,7 +96,7 @@ class Migration(SchemaMigration):
         'assessment.assessmentpart': {
             'Meta': {'object_name': 'AssessmentPart'},
             'assessment': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'parts'", 'to': "orm['assessment.Assessment']"}),
-            'criterion': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'+'", 'null': 'True', 'to': "orm['assessment.Criterion']"}),
+            'criterion': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'+'", 'null': 'True', 'to': "orm['assessment.CriterionOption']"}),
             'feedback': ('django.db.models.fields.TextField', [], {'default': "''", 'blank': 'True'}),
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
             'option': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'+'", 'null': 'True', 'to': "orm['assessment.CriterionOption']"})

openassessment/assessment/migrations/0021_assessmentpart_option_nullable.py

@@ -91,7 +91,7 @@ class Migration(SchemaMigration):
         'assessment.assessmentpart': {
             'Meta': {'object_name': 'AssessmentPart'},
             'assessment': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'parts'", 'to': "orm['assessment.Assessment']"}),
-            'criterion': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'+'", 'to': "orm['assessment.Criterion']"}),
+            'criterion': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'+'", 'to': "orm['assessment.CriterionOption']"}),
             'feedback': ('django.db.models.fields.TextField', [], {'default': "''", 'blank': 'True'}),
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
             'option': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'+'", 'to': "orm['assessment.CriterionOption']"})

openassessment/assessment/migrations/0022__add_label_fields.py

@@ -98,7 +98,7 @@ class Migration(SchemaMigration):
         'assessment.assessmentpart': {
             'Meta': {'object_name': 'AssessmentPart'},
             'assessment': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'parts'", 'to': "orm['assessment.Assessment']"}),
-            'criterion': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'+'", 'to': "orm['assessment.Criterion']"}),
+            'criterion': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'+'", 'to': "orm['assessment.CriterionOption']"}),
             'feedback': ('django.db.models.fields.TextField', [], {'default': "''", 'blank': 'True'}),
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
             'option': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'+'", 'null': 'True', 'to': "orm['assessment.CriterionOption']"})

openassessment/assessment/migrations/0023_assign_criteria_and_option_labels.py

@@ -95,7 +95,7 @@ class Migration(DataMigration):
         'assessment.assessmentpart': {
             'Meta': {'object_name': 'AssessmentPart'},
             'assessment': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'parts'", 'to': "orm['assessment.Assessment']"}),
-            'criterion': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'+'", 'to': "orm['assessment.Criterion']"}),
+            'criterion': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'+'", 'to': "orm['assessment.CriterionOption']"}),
             'feedback': ('django.db.models.fields.TextField', [], {'default': "''", 'blank': 'True'}),
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
             'option': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'+'", 'null': 'True', 'to': "orm['assessment.CriterionOption']"})