forms: Fix archiving/unarchiving of patches on patch lists

It was broken because MultipleBooleanField() was leaking string values instead
of boolens as expected by MultiplePatchForm.

Signed-off-by: Guilherme Salgado <guilherme.salgado@linaro.org>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/apps/patchwork/forms.py b/apps/patchwork/forms.py
index 4c811f5..dc7a464 100644
--- a/apps/patchwork/forms.py
+++ b/apps/patchwork/forms.py
@@ -176,6 +176,24 @@ class MultipleBooleanField(forms.ChoiceField):
     def is_no_change(self, value):
         return value == self.no_change_choice[0]
 
+    # TODO: Check whether it'd be worth to use a TypedChoiceField here; I
+    # think that'd allow us to get rid of the custom valid_value() and
+    # to_python() methods.
+    def valid_value(self, value):
+        if value in [v1 for (v1, v2) in self.choices]:
+            return True
+        return False
+
+    def to_python(self, value):
+        if self.is_no_change(value):
+            return value
+        elif value == 'True':
+            return True
+        elif value == 'False':
+            return False
+        else:
+            raise ValueError('Unknown value: %s' % value)
+
 class MultiplePatchForm(forms.Form):
     state = OptionalModelChoiceField(queryset = State.objects.all())
     archived = MultipleBooleanField()