Ticket #3400: 3400-against-10706.2.diff

django/contrib/admin/filterspecs.py

@@ -15 +15 @@
 
 class FilterSpec(object):
     filter_specs = []
-    def __init__(self, f, request, params, model, model_admin):
+    def __init__(self, f, request, params, model, model_admin, field_path=None):
         self.field = f
         self.params = params
+        self.field_path = field_path or f.name
 
     def register(cls, test, factory):
         cls.filter_specs.append((test, factory))
     register = classmethod(register)
 
-    def create(cls, f, request, params, model, model_admin):
+    def create(cls, f, request, params, model, model_admin, field_path=None):
         for test, factory in cls.filter_specs:
             if test(f):
-                return factory(f, request, params, model, model_admin)
+                return factory(f, request, params, model, model_admin, field_path=field_path)
     create = classmethod(create)
 
     def has_output(self):
@@ -52 +53 @@
         return mark_safe("".join(t))
 
 class RelatedFilterSpec(FilterSpec):
-    def __init__(self, f, request, params, model, model_admin):
-        super(RelatedFilterSpec, self).__init__(f, request, params, model, model_admin)
+    def __init__(self, f, request, params, model, model_admin, field_path=None):
+        super(RelatedFilterSpec, self).__init__(f, request, params, model, model_admin, field_path=field_path)
         if isinstance(f, models.ManyToManyField):
             self.lookup_title = f.rel.to._meta.verbose_name
         else:
             self.lookup_title = f.verbose_name
-        rel_name = f.rel.get_related_field().name
-        self.lookup_kwarg = '%s__%s__exact' % (f.name, rel_name)
+        rel_name = f.rel.to._meta.pk.name
+        self.lookup_kwarg = '%s__%s__exact' % (self.field_path, rel_name)
         self.lookup_val = request.GET.get(self.lookup_kwarg, None)
         self.lookup_choices = f.get_choices(include_blank=False)
 
@@ -81 +82 @@
 FilterSpec.register(lambda f: bool(f.rel), RelatedFilterSpec)
 
 class ChoicesFilterSpec(FilterSpec):
-    def __init__(self, f, request, params, model, model_admin):
-        super(ChoicesFilterSpec, self).__init__(f, request, params, model, model_admin)
-        self.lookup_kwarg = '%s__exact' % f.name
+    def __init__(self, f, request, params, model, model_admin, field_path=None):
+        super(ChoicesFilterSpec, self).__init__(f, request, params, model, model_admin, field_path=field_path)
+        self.lookup_kwarg = '%s__exact' % self.field_path
         self.lookup_val = request.GET.get(self.lookup_kwarg, None)
 
     def choices(self, cl):
@@ -98 +99 @@
 FilterSpec.register(lambda f: bool(f.choices), ChoicesFilterSpec)
 
 class DateFieldFilterSpec(FilterSpec):
-    def __init__(self, f, request, params, model, model_admin):
-        super(DateFieldFilterSpec, self).__init__(f, request, params, model, model_admin)
+    def __init__(self, f, request, params, model, model_admin, field_path=None):
+        super(DateFieldFilterSpec, self).__init__(f, request, params, model, model_admin, field_path=field_path)
 
-        self.field_generic = '%s__' % self.field.name
+        self.field_generic = '%s__' % self.field_path
 
         self.date_params = dict([(k, v) for k, v in params.items() if k.startswith(self.field_generic)])
 
@@ -111 +112 @@
 
         self.links = (
             (_('Any date'), {}),
-            (_('Today'), {'%s__year' % self.field.name: str(today.year),
-                       '%s__month' % self.field.name: str(today.month),
-                       '%s__day' % self.field.name: str(today.day)}),
-            (_('Past 7 days'), {'%s__gte' % self.field.name: one_week_ago.strftime('%Y-%m-%d'),
-                             '%s__lte' % f.name: today_str}),
-            (_('This month'), {'%s__year' % self.field.name: str(today.year),
-                             '%s__month' % f.name: str(today.month)}),
-            (_('This year'), {'%s__year' % self.field.name: str(today.year)})
+            (_('Today'), {'%s__year' % self.field_path: str(today.year),
+                       '%s__month' % self.field_path: str(today.month),
+                       '%s__day' % self.field_path: str(today.day)}),
+            (_('Past 7 days'), {'%s__gte' % self.field_path: one_week_ago.strftime('%Y-%m-%d'),
+                             '%s__lte' % self.field_path: today_str}),
+            (_('This month'), {'%s__year' % self.field_path: str(today.year),
+                             '%s__month' % self.field_path: str(today.month)}),
+            (_('This year'), {'%s__year' % self.field_path: str(today.year)})
         )
 
     def title(self):
@@ -133 +134 @@
 FilterSpec.register(lambda f: isinstance(f, models.DateField), DateFieldFilterSpec)
 
 class BooleanFieldFilterSpec(FilterSpec):
-    def __init__(self, f, request, params, model, model_admin):
-        super(BooleanFieldFilterSpec, self).__init__(f, request, params, model, model_admin)
-        self.lookup_kwarg = '%s__exact' % f.name
-        self.lookup_kwarg2 = '%s__isnull' % f.name
+    def __init__(self, f, request, params, model, model_admin, field_path=None):
+        super(BooleanFieldFilterSpec, self).__init__(f, request, params, model, model_admin, field_path=field_path)
+        self.lookup_kwarg = '%s__exact' % self.field_path
+        self.lookup_kwarg2 = '%s__isnull' % self.field_path
         self.lookup_val = request.GET.get(self.lookup_kwarg, None)
         self.lookup_val2 = request.GET.get(self.lookup_kwarg2, None)
 
@@ -159 +160 @@
 # if a field is eligible to use the BooleanFieldFilterSpec, that'd be much
 # more appropriate, and the AllValuesFilterSpec won't get used for it.
 class AllValuesFilterSpec(FilterSpec):
-    def __init__(self, f, request, params, model, model_admin):
-        super(AllValuesFilterSpec, self).__init__(f, request, params, model, model_admin)
-        self.lookup_val = request.GET.get(f.name, None)
-        self.lookup_choices = model_admin.queryset(request).distinct().order_by(f.name).values(f.name)
+    def __init__(self, f, request, params, model, model_admin, field_path=None):
+        super(AllValuesFilterSpec, self).__init__(f, request, params, model, model_admin, field_path=field_path)
+        self.lookup_val = request.GET.get(self.field_path, None)
+        #self.lookup_choices = model_admin.queryset(request).distinct().order_by(f.name).values(f.name)
+        self.lookup_choices = model._default_manager.all().distinct().order_by(f.name).values(f.name)
 
     def title(self):
         return self.field.verbose_name
 
     def choices(self, cl):
         yield {'selected': self.lookup_val is None,
-               'query_string': cl.get_query_string({}, [self.field.name]),
+               'query_string': cl.get_query_string({}, [self.field_path]),
                'display': _('All')}
         for val in self.lookup_choices:
             val = smart_unicode(val[self.field.name])
             yield {'selected': self.lookup_val == val,
-                   'query_string': cl.get_query_string({self.field.name: val}),
+                   'query_string': cl.get_query_string({self.field_path: val}),
                    'display': val}
 FilterSpec.register(lambda f: True, AllValuesFilterSpec)

django/contrib/admin/validation.py

@@ -324 +324 @@
 
 def get_field(cls, model, opts, label, field):
     try:
-        return opts.get_field(field)
+        if '__' in field:
+            f = None
+            m = model
+            path = field.split('__')
+            for field_name in path[:-1]:
+                f = model._meta.get_field(field_name)
+                model = f.rel.to
+            return opts.get_field(path[0])
+        else:
+            return opts.get_field(field)
     except models.FieldDoesNotExist:
         raise ImproperlyConfigured("'%s.%s' refers to field '%s' that is missing from model '%s'."
                 % (cls.__name__, label, field, model.__name__))

django/contrib/admin/views/main.py

@@ -74 +74 @@
     def get_filters(self, request):
         filter_specs = []
         if self.list_filter:
-            filter_fields = [self.lookup_opts.get_field(field_name) for field_name in self.list_filter]
-            for f in filter_fields:
-                spec = FilterSpec.create(f, request, self.params, self.model, self.model_admin)
+            lookup_opts = self.lookup_opts
+            for filter_name in self.list_filter:
+                if '__' in filter_name:
+                    f = None
+                    model = self.model
+                    path = filter_name.split('__')
+                    for field_index in xrange(len(path)-1):
+                        f = model._meta.get_field(path[field_index])
+                        model = f.rel.to
+                        f = model._meta.get_field(path[field_index+1])
+                    spec = FilterSpec.create(f, request, self.params, model, self.model_admin, field_path=filter_name)
+                else:
+                    f = lookup_opts.get_field(filter_name)
+                    spec = FilterSpec.create(f, request, self.params, self.model, self.model_admin)
                 if spec and spec.has_output():
                     filter_specs.append(spec)
         return filter_specs, bool(filter_specs)

docs/ref/contrib/admin/index.txt

@@ -461 +461 @@
         list_display = ('username', 'email', 'first_name', 'last_name', 'is_staff')
         list_filter = ('is_staff', 'is_superuser')
 
+In ``list_filter`` can be defined lookup separator as well::
+
+    class UserAdminWithLookup(UserAdmin):
+        list_filter = ('groups__name')
+
 The above code results in an admin change list page that looks like this:
 
     .. image:: _images/users_changelist.png