misc: add year/month/day variables to lazy date fields (#37433)

tests/test_formdata.py

@@ -1,3 +1,5 @@
+# -*- coding: utf-8 -*-
+
 import collections
 import datetime
 import pytest
@@ -5,8 +7,10 @@ import sys
 import shutil
 import time
 
+from django.utils import six
 from quixote import cleanup
 from quixote.http_request import Upload
+from wcs.qommon import force_str
 from wcs.qommon.template import Template
 from wcs.qommon.form import PicklableUpload
 from wcs.qommon.http_request import HTTPRequest
@@ -1510,6 +1514,32 @@ def test_lazy_formdata_decimal_filter(pub):
         assert tmpl.render(context) == '4.120'
 
 
+def test_lazy_formdata_timesince_filter(pub):
+    formdef = FormDef()
+    formdef.name = 'foobar'
+    formdef.url_name = 'foobar'
+    formdef.fields = [
+        fields.DateField(id='0', label='value', varname='value'),
+    ]
+    formdef.store()
+    formdata = formdef.data_class()()
+    formdata.data = {'0': time.strptime('2015-05-12', '%Y-%m-%d')}
+    formdata.store()
+    pub.substitutions.feed(formdata)
+    for mode in (None, 'lazy'):
+        context = pub.substitutions.get_context_variables(mode=mode)
+        context['refdate'] = datetime.date(2015, 5, 22)
+
+        tmpl = Template('{{ form_var_value|date|timesince:refdate }}')
+        assert force_str(tmpl.render(context)) == '1 week, 3 days'
+
+    # in lazy mode it's not even necessary to add the |date filter.
+    context = pub.substitutions.get_context_variables(mode='lazy')
+    context['refdate'] = datetime.date(2015, 5, 22)
+    tmpl = Template('{{ form_var_value|timesince:refdate }}')
+    assert force_str(tmpl.render(context)) == '1 week, 3 days'
+
+
 def test_decimal_conditions_django(pub, variable_test_data):
     for condition_value in (
             'form_var_foo_foo|decimal == 0',

wcs/variables.py

@@ -677,6 +677,10 @@ class LazyFieldVarDate(DateOperatorsMixin, LazyFieldVar):
     def tm_yday(self):
         return self.get_raw().tm_yday
 
+    year = tm_year
+    month = tm_mon
+    day = tm_mday
+
 
 class LazyFieldVarMap(LazyFieldVar):
     def split(self, *args, **kwargs):