moves rp models and adds votes migrations

apps/rp/migrations/0002_undvotes.py

+# -*- coding: utf-8 -*-
+# Generated by Django 1.11 on 2017-04-22 14:18
+from __future__ import unicode_literals
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('contenttypes', '0002_remove_content_type_name'),
+        ('rp', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='UnDVotes',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('score', models.IntegerField(default=True)),
+                ('object_id', models.PositiveIntegerField()),
+                ('content_type', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='contenttypes.ContentType')),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+    ]

apps/rp/models/__init__.py

+from .vote import UnDVotes, UnDVotedMixin  # noqa
+from .article import Article  # noqa

apps/rp/models.py → apps/rp/models/article.py

 from django.db import models
 from django.utils.translation import ugettext_lazy as _
 from taggit.managers import TaggableManager
+from .vote import UnDVotedMixin
 
 
-class Article(models.Model):
+class Article(UnDVotedMixin):
     url = models.URLField("URL")
     lang = models.CharField(_("Language"), max_length=50)
     metadata = models.TextField(_("Opengraph metadata"))

apps/rp/models/votes.py → apps/rp/models/vote.py

@@ -36,6 +36,9 @@ class UnDVotedMixin(models.Model):
     #: Score of the model
     und_score = models.IntegerField(default=0)
 
+    class Meta:
+        abstract = True
+
     def upvote(self, user):
         diff_score = 0
         try:
@@ -86,6 +89,3 @@ class UnDVotedMixin(models.Model):
         score = self.und_votes.aggregate(Sum("score"))["score__sum"] or 0
         # Update self score, use update and filter to avoid triggering signals
         self.__class__.objects.filter(id=self.id).update(und_score=score)
-
-    class Meta:
-        abstract = True