pedagogy: don't update uv comment publish date at each save

migrate.py

@@ -1640,7 +1640,7 @@ def migrate_pedagogy():
             grade_interest=convert_number(comment["note_interet"], -1),
             grade_teaching=convert_number(comment["note_enseignement"], -1),
             grade_work_load=convert_number(comment["note_travail"], -1),
-            publish_date=comment["date"],
+            publish_date=comment["date"].replace(tzinfo=timezone("Europe/Paris")),
         ).save()
 
     print("Migrating UV Results")

pedagogy/migrations/0001_initial.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Generated by Django 1.11.20 on 2019-06-18 15:02
+# Generated by Django 1.11.20 on 2019-06-18 20:07
 from __future__ import unicode_literals
 
 from django.conf import settings
@@ -248,7 +248,7 @@ class Migration(migrations.Migration):
                 ),
                 (
                     "publish_date",
-                    models.DateTimeField(auto_now=True, verbose_name="publish date"),
+                    models.DateTimeField(blank=True, verbose_name="publish date"),
                 ),
                 (
                     "author",

pedagogy/models.py

@@ -24,6 +24,7 @@
 
 from django.db import models
 from django.utils.translation import ugettext_lazy as _
+from django.utils import timezone
 from django.core import validators
 from django.conf import settings
 
@@ -211,7 +212,12 @@ class UVComment(models.Model):
         null=False,
         default=-1,
     )
-    publish_date = models.DateTimeField(_("publish date"), auto_now=True)
+    publish_date = models.DateTimeField(_("publish date"), blank=True)
+
+    def save(self, *args, **kwargs):
+        if self.publish_date is None:
+            self.publish_date = timezone.now()
+        super(UVComment, self).save(*args, **kwargs)
 
 
 class UVResult(models.Model):