columns are also hidden in study subject details form

smash/web/forms/study_subject_forms.py

@@ -88,6 +88,18 @@ class StudySubjectDetailForm(ModelForm):
         model = StudySubject
         fields = '__all__'
 
+    def __init__(self, *args, **kwargs):
+        super(StudySubjectDetailForm, self).__init__(*args, **kwargs)
+        instance = getattr(self, 'instance', None)
+
+        prepare_study_subject_fields(fields=self.fields, study=self.study)
+
+def get_study_from_study_subject_instance(study_subject):
+    if instance and instance.study_id:
+        self.study = Study.objects.filter(id=instance.study_id)[0]
+    else:
+        self.study = Study(columns=StudyColumns())
+
 
 class StudySubjectEditForm(ModelForm):
     datetime_contact_reminder = forms.DateTimeField(label="Contact on",