Fix locations integrity issue

ccdb/locations/migrations/0002_remove_site_fk_dupes.py

@@ -0,0 +1,23 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('locations', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='municipallocation',
+            name='site',
+        ),
+        migrations.AlterField(
+            model_name='studylocation',
+            name='site',
+            field=models.ForeignKey(to='locations.Site'),
+        ),
+    ]

ccdb/locations/models.py

@@ -33,7 +33,6 @@ class Site(models.Model):
 
 
 class MunicipalLocation(models.Model):
-    site = models.ForeignKey(Site)
     name = models.CharField(max_length=100)
     code = models.CharField(max_length=10, blank=True)
     municipal_location_type = models.CharField(max_length=50, blank=True)
@@ -49,7 +48,7 @@ class MunicipalLocation(models.Model):
 
 
 class StudyLocation(models.Model):
-    site = models.ForeignKey(Site, blank=True, null=True)
+    site = models.ForeignKey(Site)
     name = models.CharField(max_length=100)
     code = models.CharField(max_length=10, blank=True)
     study_location_type = models.CharField(max_length=50, blank=True)