Install django-model-utils and use it for automatic timestamp fields on entries

Pipfile

@@ -37,6 +37,7 @@ django-annoying = "*"
 django-shorturls = "*"
 accept-types = "*"
 django-analytical = "*"
+django-model-utils = "*"
 
 
 [dev-packages]

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "d1b1d871bb10ecfd71c966c40292cb5ba24d4dc70639d9b147c302e04b522a62"
+            "sha256": "0c229a0ec55a08b58868faee7ce35a6adc3621d8e8619a67ec8939afcccc7dfe"
         },
         "host-environment-markers": {
             "implementation_name": "cpython",
@@ -145,6 +145,12 @@
             ],
             "version": "==1.4"
         },
+        "django-model-utils": {
+            "hashes": [
+                "sha256:60ead1ba50e1353f38bde12ab8b4a80b6a0f825a8e53c348fe259548cbd1a312"
+            ],
+            "version": "==3.0.0"
+        },
         "django-otp": {
             "hashes": [
                 "sha256:54f35d7a84d8c46f35d20b969f38ef1afc0fa7627e44c481e4ab5f66a8da187e",

entries/admin.py

@@ -8,8 +8,8 @@ class SyndicationInline(admin.TabularInline):
 
 
 class EntryAdmin(admin.ModelAdmin):
-    date_hierarchy = 'published'
-    list_display = ('title', 'id', 'kind', 'published')
+    date_hierarchy = 'created'
+    list_display = ('title', 'id', 'kind', 'created')
     list_filter = ('kind',)
     inlines = (
         SyndicationInline,

entries/migrations/0006_auto_20171102_1200.py

@@ -0,0 +1,41 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.6 on 2017-11-02 01:00
+from __future__ import unicode_literals
+
+from django.db import migrations
+import django.utils.timezone
+import model_utils.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('entries', '0005_auto_20171027_1557'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='entry',
+            options={'ordering': ['-created'], 'verbose_name_plural': 'entries'},
+        ),
+        migrations.RenameField(
+            model_name='entry',
+            old_name='published',
+            new_name='created',
+        ),
+        migrations.RenameField(
+            model_name='entry',
+            old_name='updated',
+            new_name='modified',
+        ),
+        migrations.AlterField(
+            model_name='entry',
+            name='created',
+            field=model_utils.fields.AutoCreatedField(default=django.utils.timezone.now, editable=False, verbose_name='created'),
+        ),
+        migrations.AlterField(
+            model_name='entry',
+            name='modified',
+            field=model_utils.fields.AutoLastModifiedField(default=django.utils.timezone.now, editable=False, verbose_name='modified'),
+        ),
+    ]

entries/models.py

@@ -8,6 +8,7 @@ from textwrap import shorten
 from urllib.parse import urljoin
 
 from meta.models import ModelMeta
+from model_utils.models import TimeStampedModel
 from users.models import Profile
 
 from . import kinds
@@ -20,7 +21,7 @@ class EntryManager(models.Manager):
         return qs.select_related('author').prefetch_related('syndications')
 
 
-class Entry(ModelMeta, models.Model):
+class Entry(ModelMeta, TimeStampedModel):
     objects = EntryManager()
     kind = models.CharField(
         max_length=30,
@@ -39,8 +40,13 @@ class Entry(ModelMeta, models.Model):
         on_delete=models.CASCADE,
     )
 
-    published = models.DateTimeField()
-    updated = models.DateTimeField()
+    @property
+    def published(self):
+        return self.created
+
+    @property
+    def updated(self):
+        return self.modified
 
     _metadata = {
         'description': 'excerpt',
@@ -117,8 +123,8 @@ class Entry(ModelMeta, models.Model):
             },
             'headline': self.title,
             'description': self.excerpt,
-            'datePublished': self.published.isoformat(),
-            'dateModified': self.updated.isoformat(),
+            'datePublished': self.created.isoformat(),
+            'dateModified': self.modified.isoformat(),
         }
         if self.photo:
             posting['image'] = (urljoin(base, self.photo.url), )
@@ -126,7 +132,7 @@ class Entry(ModelMeta, models.Model):
 
     class Meta:
         verbose_name_plural = 'entries'
-        ordering = ['-published']
+        ordering = ['-created']
 
 
 class SyndicationManager(models.Manager):