Used the same timestamp for multiple history objects.

openslides/core/migrations/0011_auto_20190119_0958.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.1.5 on 2019-01-19 08:58
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0010_auto_20190118_1908'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='history',
+            name='now',
+            field=models.DateTimeField(),
+        ),
+    ]

openslides/core/models.py

@@ -266,6 +266,7 @@ class HistoryManager(models.Manager):
         """
         with transaction.atomic():
             instances = []
+            history_time = now()
             for element in elements:
                 if (
                     element["disable_history"]
@@ -280,6 +281,7 @@ class HistoryManager(models.Manager):
                     element_id=get_element_id(
                         element["collection_string"], element["id"]
                     ),
+                    now=history_time,
                     information=element["information"],
                     user_id=element["user_id"],
                     full_data=data,
@@ -329,7 +331,7 @@ class History(RESTModelMixin, models.Model):
 
     element_id = models.CharField(max_length=255)
 
-    now = models.DateTimeField(auto_now_add=True)
+    now = models.DateTimeField()
 
     information = models.CharField(max_length=255)
 

openslides/core/serializers.py

@@ -176,3 +176,4 @@ class HistorySerializer(ModelSerializer):
     class Meta:
         model = History
         fields = ("id", "element_id", "now", "information", "user")
+        read_only_fields = ("now",)

openslides/motions/views.py

@@ -568,7 +568,7 @@ class MotionViewSet(ModelViewSet):
             person=request.user,
             skip_autoupdate=True,
         )
-        inform_changed_data(motion, information=f"State set to {motion.state.name}.")
+        inform_changed_data(motion, information=f"State set to {motion.state.name}.", user_id=request.user.pk)
         return Response({"detail": message})
 
     @detail_route(methods=["put"])