Implement DateField; close #8

Author: alexei

adapters/fields.py

@@ -10,8 +10,15 @@
 
 
 __all__ = [
-    'BooleanField', 'CharField', 'DecimalField', 'Field', 'FloatField',
-    'IntField', 'TimeField']
+    'BooleanField',
+    'CharField',
+    'DateField',
+    'DecimalField',
+    'Field',
+    'FloatField',
+    'IntField',
+    'TimeField',
+]
 
 
 class BooleanField(BaseField):
@@ -24,6 +31,16 @@ def adapt(self, data):
         return unicode(data)
 
 
+class DateField(BaseField):
+    def adapt(self, data):
+        if isinstance(data, datetime.date):
+            return data
+        elif isinstance(data, (str, unicode)):
+            return dateutil.parser.parse(data).date()
+        else:
+            raise ValueError("Invalid date argument")
+
+
 class DecimalField(BaseField):
     def adapt(self, data):
         return Decimal(data)

tests/test_fields.py

@@ -87,3 +87,15 @@ def test_time_field_from_string(self):
         actual = adapters.TimeField().adapt(time.strftime('%H:%M'))
         expected = datetime.time(13, 14)
         self.assertEqual(actual, expected)
+
+    def test_date_field(self):
+        today = datetime.datetime.today().date()
+        actual = adapters.DateField().adapt(today)
+        expected = today
+        self.assertEqual(actual, expected)
+
+    def test_date_field_from_string(self):
+        date = datetime.date(1986, 7, 25)
+        actual = adapters.DateField().adapt(date.strftime('%Y-%m-%d'))
+        expected = date
+        self.assertEqual(actual, expected)