Abtract classes

lostplaces/lostplaces_app/models.py

@@ -20,6 +20,31 @@ from taggit.managers import TaggableManager
 
 # Create your models here.
 
+class Taggable(models.Model):
+    
+    class Meta:
+        abstract = True
+        
+    tags = TaggableManager(blank=True)
+    
+class MapablePoint(models.Model):
+    class Meta:
+        abstract = True
+        
+    name = models.CharField(max_length=50)
+    
+    latitude = models.FloatField(
+        validators=[
+            MinValueValidator(-90),
+            MaxValueValidator(90)
+        ]
+    )
+    longitude = models.FloatField(
+        validators=[
+            MinValueValidator(-180),
+            MaxValueValidator(180)
+        ]
+    )
 
 class Explorer(models.Model):
     """
@@ -62,12 +87,11 @@ class Voucher(models.Model):
         return "Voucher " + str(self.code)
 
 
-class Place (models.Model):
+class Place(Taggable, MapablePoint):
     """
     Place defines a lost place (location, name, description etc.).
     """
-
+    
-    name = models.CharField(max_length=50)
     submitted_when = models.DateTimeField(auto_now_add=True, null=True)
     submitted_by = models.ForeignKey(
         Explorer,
@@ -77,22 +101,8 @@ class Place (models.Model):
         related_name='places'
     )
     location = models.CharField(max_length=50)
-    latitude = models.FloatField(
-        validators=[
-            MinValueValidator(-90),
-            MaxValueValidator(90)
-        ]
-    )
-    longitude = models.FloatField(
-        validators=[
-            MinValueValidator(-180),
-            MaxValueValidator(180)
-        ]
-    )
     description = models.TextField()
 
-    tags = TaggableManager(blank=True)
-
     def get_absolute_url(self):
         return reverse('place_detail', kwargs={'pk': self.pk})