Add back pkg.extras_list, which was just removed in #4691

ckan/model/package.py

@@ -556,6 +556,19 @@ def set_rating(self, user_or_ip, rating):
                             rating=rating)
             meta.Session.add(rating)
 
+    @property
+    @maintain.deprecated()
+    def extras_list(self):
+        '''DEPRECATED in 2.9
+
+        Returns a list of the dataset's extras, as PackageExtra object
+        NB includes deleted ones too (state='deleted')
+        '''
+        from package_extra import PackageExtra
+        return meta.Session.query(PackageExtra) \
+            .filter_by(package_id=self.id) \
+            .all()
+
 
 class RatingValueException(Exception):
     pass

ckan/tests/model/test_package_extra.py

@@ -0,0 +1,36 @@
+# encoding: utf-8
+
+from nose.tools import assert_equal
+
+from ckan import model
+from ckan.tests import helpers, factories
+
+
+class TestPackage(object):
+
+    def setup(self):
+        helpers.reset_db()
+
+    def test_extras_list(self):
+        extras = [
+            {u'key': u'subject', u'value': u'science'},
+            {u'key': u'accuracy', u'value': u'metre'},
+            {u'key': u'sample_years', u'value': u'2012-2013'},
+        ]
+        dataset = factories.Dataset(extras=extras)
+        # delete the 'subject' extra
+        extras = extras[1:]
+        helpers.call_action(u'package_patch', id=dataset['id'], extras=extras)
+        # unrelated extra, to check it doesn't affect things
+        factories.Dataset(extras=[{u'key': u'foo', u'value': u'bar'}])
+
+        pkg = model.Package.by_name(dataset['name'])
+        assert isinstance(pkg.extras_list[0], model.PackageExtra)
+        assert_equal(
+            set([(pe.package_id, pe.key, pe.value, pe.state)
+                 for pe in pkg.extras_list]),
+            set([(dataset['id'], u'subject', u'science', u'deleted'),
+                 (dataset['id'], u'accuracy', u'metre', u'active'),
+                 (dataset['id'], u'sample_years', u'2012-2013', u'active'),
+                 ])
+        )