misc: add |getlist filter for querysets (#49400)

tests/test_formdata.py

@@ -1213,6 +1213,19 @@ def test_lazy_formdata_queryset_filter(pub, variable_test_data):
     assert LazyFormData(formdata).objects.pending().count == 7
     assert LazyFormData(formdata).objects.pending().filter_by('foo_foo').apply_filter_value('foo').count == 0
 
+    # test |getlist
+    tmpl = Template('{% for v in form_objects|order_by:"id"|getlist:"foo_foo" %}{{ v }},{% endfor %}')
+    assert tmpl.render(context) == 'bar,bar,bar,bar,bar,bar,bar,foo,foo,foo,foo,'
+    tmpl = Template('{% if "foo" in form_objects|getlist:"foo_foo" %}OK{% else %}KO{% endif%}')
+    assert tmpl.render(context) == 'OK'
+    tmpl = Template('{% if "fooooooooooooooo" in form_objects|getlist:"foo_foo" %}OK{% else %}KO{% endif%}')
+    assert tmpl.render(context) == 'KO'
+    assert LazyFormData(formdata).objects.order_by('id').getlist('foo_foo') == [
+        'bar', 'bar', 'bar', 'bar', 'bar', 'bar', 'bar', 'foo', 'foo', 'foo', 'foo']
+    assert LazyFormData(formdata).objects.order_by('id').getlist('form_var_foo_foo') == [
+        'bar', 'bar', 'bar', 'bar', 'bar', 'bar', 'bar', 'foo', 'foo', 'foo', 'foo']
+    assert set(LazyFormData(formdata).objects.getlist('unknown')) == set([None])
+
 
 def test_lazy_formdata_queryset_get_from_first(pub, variable_test_data):
     context = pub.substitutions.get_context_variables(mode='lazy')

wcs/variables.py

@@ -184,6 +184,15 @@ class LazyFormDefObjectsManager(object):
         get_publisher().record_error(_('Invalid filter "%s"') % self.pending_attr, formdata=self._formdata)
         return self.none()
 
+    def getlist(self, key):
+        values = []
+        for lazy_formdata in self:
+            value = lazy_formdata.get(key)
+            if value is not None:
+                value = value.get_value()
+            values.append(value)
+        return values
+
     def __getattr__(self, attribute):
         if attribute.startswith('count_status_'):
             # backward compatibility