Added opengraph_tags property on blog.Entry model

Author: bmispelon

blog/models.py

@@ -3,9 +3,11 @@
 from django.conf import settings
 from django.core.cache import caches
 from django.db import models
+from django.templatetags.static import static
 from django.test import RequestFactory
 from django.utils import timezone
 from django.utils.cache import _generate_cache_header_key
+from django.utils.formats import date_format
 from django.utils.translation import gettext_lazy as _
 from django_hosts.resolvers import reverse
 from docutils.core import publish_parts
@@ -150,6 +152,10 @@ def is_published(self):
 
     is_published.boolean = True
 
+    @property
+    def pub_date_localized(self):
+        return date_format(self.pub_date)
+
     def save(self, *args, **kwargs):
         self.summary_html = ContentFormat.to_html(self.content_format, self.summary)
         self.body_html = ContentFormat.to_html(self.content_format, self.body)
@@ -171,6 +177,25 @@ def invalidate_cached_entry(self):
         )
         cache.delete(cache_key)
 
+    @property
+    def opengraph_tags(self):
+        return {
+            "og:type": "article",
+            "og:title": self.headline,
+            "og:description": _("Posted by {author} on {pub_date}").format(
+                author=self.author, pub_date=self.pub_date_localized
+            ),
+            "og:article:published_time": self.pub_date.isoformat(),
+            "og:article:author": self.author,
+            "og:image": static("img/logos/django-logo-negative.png"),
+            "og:image:alt": "Django logo",
+            "og:url": self.get_absolute_url(),
+            "og:site_name": "Django Project",
+            "twitter:card": "summary",
+            "twitter:creator": "djangoproject",
+            "twitter:site": "djangoproject",
+        }
+
 
 class EventQuerySet(EntryQuerySet):
     def past(self):

blog/tests.py

@@ -1,12 +1,12 @@
 from contextlib import redirect_stderr
-from datetime import timedelta
+from datetime import date, timedelta
 from io import StringIO
 
 from django.contrib.auth.models import User
 from django.core.files.base import ContentFile
 from django.test import TestCase
 from django.urls import reverse
-from django.utils import timezone
+from django.utils import timezone, translation
 
 from .models import ContentFormat, Entry, Event, ImageUpload
 from .sitemaps import WeblogSitemap
@@ -126,6 +126,12 @@ def test_header_base_level_markdown(self):
         )
         self.assertHTMLEqual(entry.body_html, '<h3 id="s-test">test</h3>')
 
+    def test_pub_date_localized(self):
+        entry = Entry(pub_date=date(2005, 7, 21))
+        self.assertEqual(entry.pub_date_localized, "July 21, 2005")
+        with translation.override("nn"):
+            self.assertEqual(entry.pub_date_localized, "21. juli 2005")
+
 
 class EventTestCase(DateTimeMixin, TestCase):
     def test_manager_past_future(self):

djangoproject/templates/blog/entry_detail.html

@@ -3,10 +3,11 @@
 
 {% block title %}{{ object.headline|escape }} | Weblog{% endblock %}
 
-{% block og_title %}{{ object.headline|safe }}{% endblock %}
-{% block og_description %}{% blocktranslate trimmed with author=object.author pub_date=object.pub_date|date:"DATE_FORMAT" %}
-    Posted by {{ author }} on {{ pub_date }}
-{% endblocktranslate %}{% endblock %}
+{% block og_tags %}
+    {% for property, content in object.opengraph_tags.items %}
+        <meta property="{{ property }}" content="{{ content }}" />
+    {% endfor %}
+{% endblock og_tags %}
 
 {% block content %}
     <h1>{{ object.headline|safe }}</h1>