Fix #130 - Fix coerce on IP Address Field.

   - As defined in ban/auth/models.py, IPAddressField is not mandatory.

Author: philippe VESSIERE

ban/auth/models.py

@@ -102,7 +102,7 @@ class Session(db.Model):
     """
     user = db.ForeignKeyField(User, null=True)
     client = db.ForeignKeyField(Client, null=True)
-    ip = db.IPAddressField(null=True)  # TODO IPField
+    ip = db.IPAddressField(null=True)
     email = db.CharField(null=True)  # TODO EmailField
 
     @property

ban/db/fields.py

@@ -206,15 +206,13 @@ class IPAddressField(CharField):
     max_length = 100
 
     def coerce(self, value=None):
-        if value is None:
-            value = '127.0.0.1'
-        else:
+        if value:
             value = str(value)
+            try:
+                ipaddress.ip_address(value)
+            except ipaddress.AddressValueError:
+                raise ValueError('Invalid IP Address "{}"'.format(value))
 
-        try:
-            ipaddress.ip_address(value)
-        except ipaddress.AddressValueError:
-            raise ValueError('Invalid IP Address "{}"'.format(value))
         return value