json: export DateField as YYYY-MM-DD (#6927)

tests/test_api.py

@@ -5,6 +5,7 @@ import base64
 import hashlib
 import urllib
 import datetime
+import time
 
 from quixote import cleanup, get_publisher
 from wcs.users import User
@@ -215,11 +216,13 @@ def test_formdata():
     formdef.name = 'test'
     formdef.fields = [
         fields.StringField(id='0', label='foobar', varname='foobar'),
-        fields.StringField(id='1', label='foobar2'),]
+        fields.StringField(id='1', label='foobar2'),
+        fields.DateField(id='2', label='foobar3', varname='date'),]
     formdef.store()
 
     formdata = formdef.data_class()()
-    formdata.data = {'0': 'foo@localhost', '1': 'xxx'}
+    date = time.strptime('2014-01-20', '%Y-%m-%d')
+    formdata.data = {'0': 'foo@localhost', '1': 'xxx', '2': date}
     formdata.user_id = user.id
     formdata.just_created()
     formdata.store()
@@ -228,7 +231,8 @@ def test_formdata():
     assert 'last_update_time' in resp.json
     assert resp.json['user']['name'] == user.name
     assert resp.json['fields']['foobar'] == 'foo@localhost'
-    assert len(resp.json['fields']) == 1 # foobar2 has no varname, not in json
+    assert resp.json['fields']['date'] == '2014-01-20'
+    assert len(resp.json['fields']) == 2 # foobar2 has no varname, not in json
 
 def test_myspace_forms():
     FormDef.wipe()

wcs/fields.py

@@ -776,6 +776,12 @@ class DateField(WidgetField):
         except TypeError:
             return value
 
+    def get_json_value(self, value):
+        try:
+            return strftime('%Y-%m-%d', value)
+        except TypeError:
+            return ''
+
 register_field_class(DateField)