Taking in changes from andis

fet2020/posts/models.py

@@ -13,6 +13,9 @@ from django.db.models import Q
 
 from datetime import timedelta
 
+import logging
+logger = logging.getLogger('posts')
+
 #TODO: is_fetsitzung -> is_fetmeeting
 
 ############
@@ -108,11 +111,27 @@ class Post(models.Model):
         if self.image:
             return self.image.url
         else:
-            return ""
+            image=self.find_an_image()
+            if image:
+                return image.url
+            else:
+                return ""
 
     def key(self):
         return self.slug or self.id
 
+    def find_an_image(self):
+        "find an image via another post"
+        posts1=Post.objects.filter(slug__in=self.tags.names()).filter(image__isnull=False)[0:1].all() # Query all posts that have a slug that equals one of the tags
+        if len(posts1)>0:
+            return posts1.get().image
+        
+        posts2=self.tags.similar_objects()
+        for p in posts2:
+            if p.image is not None:
+                return p.image
+        return None
+        
     @property
     def url(self):
         return reverse('posts.show', kwargs={"id":self.slug})
@@ -136,6 +155,7 @@ class PostSerializer(serializers.HyperlinkedModelSerializer):
         fields = ['slug', 'title', 'subtitle', 'body', 'url', 'public_date', 
                   'legacy_id', 'image', 'event_start', 'event_end', 
                   'is_fetsitzung']
+
 class News(Post):
     class Meta:
         proxy = True
@@ -192,4 +212,4 @@ class FetMeeting(Event):
         if not self.event_end:
             self.event_end = self.event_start + timedelta(hours=2)
 
-        super().save(*args, **kwargs)
+        super().save(*args, **kwargs)