Modificato modello location

Le `location` hanno un nome e una descrizione. Opzionalmente possono
avere una mappa e coordinate (da implementare in futuro)

locations/migrations/0006_location_name.py

+# Generated by Django 2.0.1 on 2018-01-14 21:51
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('locations', '0005_auto_20170902_2011'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='location',
+            name='name',
+            field=models.CharField(default='', max_length=25),
+            preserve_default=False,
+        ),
+    ]

locations/migrations/0007_auto_20180114_2252.py

+# Generated by Django 2.0.1 on 2018-01-14 21:52
+
+import django.contrib.gis.db.models.fields
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('locations', '0006_location_name'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='location',
+            name='coord',
+            field=django.contrib.gis.db.models.fields.PointField(null=True, srid=4326),
+        ),
+        migrations.AlterField(
+            model_name='location',
+            name='map',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, to='locations.Map'),
+        ),
+    ]

locations/models.py

@@ -8,8 +8,9 @@ class Map(models.Model):
 
 
 class Location(models.Model):
-    map = models.ForeignKey(Map, blank=True,on_delete=models.CASCADE)
-    coord = models.PointField(blank=True)
+    name = models.CharField(max_length=25, null=False)
+    map = models.ForeignKey(Map, null=True, on_delete=models.CASCADE)
+    coord = models.PointField(null=True)
     description = models.CharField(max_length=80, null=False)
 
     def clean(self):