Insert LocalizedModelChoiceField for use in MotionSetWorkflowMixin. Fixed #713.

openslides/motion/forms.py

@@ -14,8 +14,7 @@ from django import forms
 from django.utils.translation import ugettext as _, ugettext_lazy
 
 from openslides.config.api import config
-from openslides.utils.forms import CssClassMixin
-from openslides.utils.forms import CleanHtmlFormMixin
+from openslides.utils.forms import CssClassMixin, CleanHtmlFormMixin, LocalizedModelChoiceField
 from openslides.utils.person import PersonFormField, MultiplePersonFormField
 from .models import Motion, Category, Workflow
 
@@ -144,7 +143,7 @@ class MotionSetWorkflowMixin(forms.ModelForm):
     so, the motion's state is reset.
     """
 
-    set_workflow = forms.ModelChoiceField(
+    set_workflow = LocalizedModelChoiceField(
         queryset=Workflow.objects.all(),
         required=False,
         label=ugettext_lazy('Workflow'),

openslides/utils/forms.py

@@ -13,7 +13,7 @@
 import bleach
 
 from django import forms
-from django.utils.translation import ugettext_lazy
+from django.utils.translation import ugettext as _, ugettext_lazy
 
 
 # Allowed tags, attributes and styles allowed in textareas edited with a JS
@@ -48,6 +48,18 @@ class CssClassMixin(object):
     required_css_class = 'required'
 
 
+class LocalizedModelChoiceField(forms.ModelChoiceField):
+    """
+    Subclass of Django's ModelChoiceField to translate the labels of the
+    model's objects.
+    """
+    def label_from_instance(self, *args, **kwargs):
+        """
+        Translates the output from Django's label_from_instance method.
+        """
+        return _(super(LocalizedModelChoiceField, self).label_from_instance(*args, **kwargs))
+
+
 class LocalizedModelMultipleChoiceField(forms.ModelMultipleChoiceField):
     def __init__(self, *args, **kwargs):
         self.to_field_name = kwargs.get('to_field_name', None)