fields: ignore invalid date values (#40771)

tests/test_backoffice_pages.py

@@ -5658,13 +5658,6 @@ def test_backoffice_cards_import_data_from_csv(pub, studio):
     resp = resp.forms[0].submit()
     assert 'CSV file contains less columns than card fields.' in resp.text
 
-    resp.forms[0]['file'] = Upload('test.csv',
-                                   b'Table,Map,Test,Boolean,List,Date,File,Email,Long,List2\n'
-                                   b'x,map,data1,Yes,item1,invalid,,test@localhost,plop,1',
-                                   'text/csv')
-    resp = resp.forms[0].submit()
-    assert 'time data \'invalid\' does not match format' in resp.text
-
     data = [b'Table,Map,Test,Boolean,List,Date,File,Email,Long,List2']
     for i in range(1, 150):
         data.append(b'table,48.81;2.37,data%d,%s,item%d,2020-01-%02d,filename-%d,test@localhost,plop,1' % (

tests/test_fields.py

@@ -553,5 +553,4 @@ def test_date():
     assert fields.DateField().convert_value_from_str('2015-01-04') is not None
     assert fields.DateField().convert_value_from_str('04/01/2015') is not None
     assert fields.DateField().convert_value_from_str('') is None
-    with pytest.raises(ValueError, match="does not match format"):
-        fields.DateField().convert_value_from_str('not a date')
+    assert fields.DateField().convert_value_from_str('not a date') is None

wcs/fields.py

@@ -1243,7 +1243,10 @@ class DateField(WidgetField):
     def convert_value_from_str(self, value):
         if not value:
             return None
-        return get_as_datetime(value).timetuple()
+        try:
+            return get_as_datetime(value).timetuple()
+        except ValueError:
+            return None
 
     def convert_value_to_str(self, value):
         if value is None: