adds support to dotted syntax to the 'fields' parameter of export_as_...

it's now possible ti use export_as_csv(fields=['obj.fk.field'.....

adminactions/tests/__init__.py

@@ -6,6 +6,13 @@
 from .graph import TestGraph  # NOQA
 from .api import TestExportAsCsv, TestExportAsExcel, TestExportQuerySetAsCsv, TestExportQuerySetAsExcel
 
+import warnings
+warnings.filterwarnings("ignore",
+                                append=True,
+                                category=DeprecationWarning,
+                                message=".*AUTH_PROFILE_MODULE.*")
+
+
 if getattr(settings, 'ENABLE_SELENIUM', True):
     try:
         import selenium  # NOQA

adminactions/tests/api.py

@@ -13,22 +13,34 @@ class TestExportQuerySetAsCsv(TestCase):
     def test_queryset_values(self):
         fields = ['codename', 'content_type__app_label']
         header = ['Name', 'Application']
-        qs = Permission.objects.filter(codename='add_user').values('codename', 'content_type__app_label')
         mem = StringIO.StringIO()
-        export_as_csv(queryset=qs, fields=fields, header=header, out=mem)
+        with self.assertNumQueries(1):
+            qs = Permission.objects.filter(codename='add_user').values('codename', 'content_type__app_label')
+            export_as_csv(queryset=qs, fields=fields, header=header, out=mem)
         mem.seek(0)
         csv_dump = mem.read()
         self.assertEquals(csv_dump.decode('utf8'), u'"Name";"Application"\r\n"add_user";"auth"\r\n')
 
     def test_callable_method(self):
         fields = ['codename', 'natural_key']
-        qs = Permission.objects.filter(codename='add_user')
         mem = StringIO.StringIO()
-        export_as_csv(queryset=qs, fields=fields, out=mem)
+        with self.assertNumQueries(2):
+            qs = Permission.objects.filter(codename='add_user')
+            export_as_csv(queryset=qs, fields=fields, out=mem)
         mem.seek(0)
         csv_dump = mem.read()
         self.assertEquals(csv_dump.decode('utf8'), u'"add_user";"(u\'add_user\', u\'auth\', u\'user\')"\r\n')
 
+    def test_deep_attr(self):
+        fields = ['codename', 'content_type.app_label']
+        mem = StringIO.StringIO()
+        with self.assertNumQueries(1):
+            qs = Permission.objects.select_related().filter(codename='add_user')
+            export_as_csv(queryset=qs, fields=fields, out=mem)
+        mem.seek(0)
+        csv_dump = mem.read()
+        self.assertEquals(csv_dump.decode('utf8'), u'"add_user";"auth"\r\n')
+
 
 class TestExportAsCsv(unittest.TestCase):
     def test_export_as_csv(self):

adminactions/tests/merge.py

@@ -16,6 +16,7 @@ def assert_profile(user):
     p = None
     try:
         user.get_profile()
+        #warnings.filters.pop()
     except ObjectDoesNotExist:
         app_label, model_name = settings.AUTH_PROFILE_MODULE.split('.')
         model = models.get_model(app_label, model_name)

adminactions/utils.py

@@ -23,15 +23,40 @@ def get_copy_of_instance(instance):
     return instance.__class__.objects.get(pk=instance.pk)
 
 
+def get_attr(obj, attr, default=None):
+    """Recursive get object's attribute. May use dot notation.
+
+    >>> class C(object): pass
+    >>> a = C()
+    >>> a.b = C()
+    >>> a.b.c = 4
+    >>> get_attr(a, 'b.c')
+    4
+
+    >>> get_attr(a, 'b.c.y', None)
+
+    >>> get_attr(a, 'b.c.y', 1)
+    1
+    """
+    if '.' not in attr:
+        ret = getattr(obj, attr, default)
+    else:
+        L = attr.split('.')
+        ret = get_attr(getattr(obj, L[0], default), '.'.join(L[1:]), default)
+
+    if isinstance(ret, BaseException):
+        raise ret
+    return ret
+
 def getattr_or_item(obj, name):
     try:
-        return getattr(obj, name)
+        ret = get_attr(obj, name, AttributeError())
     except AttributeError:
         try:
-            return obj[name]
+            ret = obj[name]
         except KeyError:
             raise AttributeError("%s object has no attribute/item '%s'" % (obj.__class__.__name__, name))
-
+    return ret
 
 def get_field_value(obj, field, usedisplay=True, raw_callable=False):
     """