update data model

billard/models.py

@@ -1,3 +1,4 @@
+import uuid
 from django.db import models
 
 
@@ -34,7 +35,7 @@ class Location(models.Model):
 
 
 class Client(models.Model):
-    id = models.UUIDField(primary_key=True, editable=False)
+    uuid = models.UUIDField(unique=True, default=uuid.uuid4)
     location = models.ForeignKey(Location)
     desk1_enable = models.BooleanField()
     desk1_name = models.CharField(max_length=32, blank=True, null=True)
@@ -46,7 +47,7 @@ class Client(models.Model):
     desk2_prize_ht = models.DecimalField(max_digits=4, decimal_places=2, blank=True, null=True)
 
     def __str__(self):
-        return self.name
+        return self.location.name
 
     def __unicode__(self):
-        return self.name
+        return self.location.name