Fix bugs

.gitignore

@@ -34,3 +34,4 @@ pip-log.txt
 sdist/
 target/
 var/
+venv/

.travis.yml

@@ -0,0 +1,13 @@
+sudo: false
+language: python
+cache: pip
+python:
+  - "3.4"
+  - "2.7"
+install:
+  - pip install -U pip
+  - pip install -r requirements-test.txt
+script:
+  - py.test -ra -vvv --cov
+after_success:
+  - bash <(curl -s https://codecov.io/bash)

README.rst

@@ -1,5 +1,9 @@
 Django Sorting Field
 ====================
+.. image:: https://travis-ci.org/andersinno/django-sorting-field.svg?branch=master
+  :target: https://travis-ci.org/andersinno/django-sorting-field
+.. image:: https://codecov.io/gh/andersinno/django-sorting-field/branch/master/graph/badge.svg
+  :target: https://codecov.io/gh/andersinno/django-sorting-field
 
 * This package implements a Django form field + widget for drag & drog sorting of items
 * Sorting any item with a field called ``id`` is supported
@@ -77,9 +81,10 @@ Add the SortingFormField to the CMS Plugin and populate it
 
 		def __init__(self, *args, **kwargs):
 			super(CarouselPluginForm, self).__init__(*args, **kwargs)
-			self.fields["carousel_order"].populate(
-				items=self.instance.carousel.pictures.all(),
-			)
+			if self.instance.pk:
+				self.fields["carousel_order"].populate(
+					items=self.instance.carousel.pictures.all(),
+				)
 
 	class CMSCarouselPlugin(CMSPluginBase):
 		model = CarouselPlugin

django_sorting_field/utils.py

@@ -6,17 +6,17 @@
 def clean_order_json(value):
         value = "[]" if value is None else value
 
+        if not isinstance(value, six.string_types):
+            return value
+
         try:
             return json.loads(value)
         except ValueError:
             return []
 
 
 def iterate_in_order(items, order):
-    # In case our order is still in json format
-    if isinstance(order, six.string_types):
-        order = clean_order_json(order)
-
+    order = clean_order_json(order)
     items_by_id = {item.id: item for item in items}
 
     # Return items that are ordered first
@@ -26,7 +26,7 @@ def iterate_in_order(items, order):
         yield items_by_id.pop(entry)
 
     # Return the rest
-    for identifier, item in items_by_id.iteritems():
+    for identifier, item in items_by_id.items():
         yield item
 
 

django_sorting_field_tests/test_utils.py

@@ -0,0 +1,19 @@
+from django_sorting_field.utils import sort_by_order
+
+
+class DummyItem(object):
+
+    def __init__(self, item_id):
+        self.id = item_id
+
+
+def test_sort_by_order_none():
+    items = [
+        DummyItem(0),
+        DummyItem(1),
+        DummyItem(2),
+    ]
+    sorted_items = sort_by_order(items, None)
+    assert sorted_items[0].id == 0
+    assert sorted_items[1].id == 1
+    assert sorted_items[2].id == 2

requirements-test.txt

@@ -0,0 +1,3 @@
+-e .
+pytest
+pytest-cov

setup.cfg

@@ -12,6 +12,7 @@ include_package_data = True
 packages = find:
 install_requires =
     django
+    six
 
 [bdist_wheel]
 universal = 1