Add support for like and ilike operators for the PhoneNumberType type

sqlalchemy_utils/types/phone_number.py

@@ -6,7 +6,8 @@
 ..  _phonenumbers: https://github.com/daviddrysdale/python-phonenumbers
 """
 
-from sqlalchemy import exc, types
+from sqlalchemy import exc, String, types
+from sqlalchemy.sql.operators import ilike_op, like_op, notilike_op, notlike_op
 
 from ..exceptions import ImproperlyConfigured
 from ..utils import str_coercible
@@ -180,6 +181,12 @@ def __init__(self, region="US", max_length=20, *args, **kwargs):
         self.region = region
         self.impl = types.Unicode(max_length)
 
+    def coerce_compared_value(self, op, value):
+        if op in (like_op, notlike_op, ilike_op, notilike_op):
+            return String()
+        else:
+            return self
+
     def process_bind_param(self, value, dialect):
         if value:
             if not isinstance(value, PhoneNumber):

tests/types/test_phonenumber.py

@@ -163,6 +163,28 @@ def test_compilation(self, User, session):
         # the type should be cacheable and not throw exception
         session.execute(query)
 
+    def test_op_like_notlike_and_ilike_notilike(self, session, User):
+        user1 = User(phone_number="040 1234567")
+        user2 = User(phone_number="040 1234568")
+        user3 = User(phone_number="041 1234568")
+
+        session.add_all([user1, user2, user3])
+        session.commit()
+
+        result = session.query(User).filter(User.phone_number.like("%568"))
+        assert len(result.all()) == 2
+
+        result = session.query(User).filter(User.phone_number.notlike("+1040%"))
+        assert len(result.all()) == 1
+        assert result[0] == user3
+
+        result = session.query(User).filter(User.phone_number.ilike("%568"))
+        assert len(result.all()) == 2
+
+        result = session.query(User).filter(User.phone_number.notilike("+1040%"))
+        assert len(result.all()) == 1
+        assert result[0] == user3
+
 
 @pytest.mark.skipif("types.phone_number.phonenumbers is None")
 class TestPhoneNumberComposite: