Add back compatibility

.gitignore

@@ -10,3 +10,5 @@ dist
 .coverage*
 .env
 example/example.db
+.tox
+

.travis.yml

@@ -5,25 +5,79 @@ python:
   - "3.4"
   - "3.5"
   - "3.6"
+  - "3.7"
 env:
+  - DJANGO_VERSION='Django>=1.4,<1.5'
+  - DJANGO_VERSION='Django>=1.5,<1.6'
+  - DJANGO_VERSION='Django>=1.6,<1.7'
+  - DJANGO_VERSION='Django>=1.7,<1.8'
+  - DJANGO_VERSION='Django>=1.8,<1.9'
+  - DJANGO_VERSION='Django>=1.9,<1.10'
+  - DJANGO_VERSION='Django>=1.10,<1.11'
   - DJANGO_VERSION='Django>=1.11,<2.0'
   - DJANGO_VERSION='Django>=2.0,<2.1'
   - DJANGO_VERSION='Django>=2.1,<2.2'
   - DJANGO_VERSION='https://github.com/django/django/archive/master.tar.gz'
 matrix:
   exclude:
     - python: "2.7"
-      env: DJANGO_VERSION='Django>=2.0,<2.1'
+      env: DJANGO_VERSION='https://github.com/django/django/archive/master.tar.gz'
     - python: "2.7"
       env: DJANGO_VERSION='Django>=2.1,<2.2'
     - python: "2.7"
-      env: DJANGO_VERSION='https://github.com/django/django/archive/master.tar.gz'
+      env: DJANGO_VERSION='Django>=2.0,<2.1'
+    - python: "2.7"
+      env: DJANGO_VERSION='Django>=1.6,<1.7'
+    - python: "3.4"
+      env: DJANGO_VERSION='Django>=1.4,<1.5'
+    - python: "3.4"
+      env: DJANGO_VERSION='Django>=1.5,<1.6'
+    - python: "3.4"
+      env: DJANGO_VERSION='Django>=1.6,<1.7'
     - python: "3.4"
       env: DJANGO_VERSION='Django>=2.1,<2.2'
-    - python: "2.7"
+    - python: "3.4"
+      env: DJANGO_VERSION='https://github.com/django/django/archive/master.tar.gz'
+    - python: "3.5"
+      env: DJANGO_VERSION='Django>=1.4,<1.5'
+    - python: "3.5"
+      env: DJANGO_VERSION='Django>=1.5,<1.6'
+    - python: "3.5"
+      env: DJANGO_VERSION='Django>=1.6,<1.7'
+    - python: "3.5"
+      env: DJANGO_VERSION='Django>=1.7,<1.8'
+    - python: "3.5"
+      env: DJANGO_VERSION='Django>=2.1,<2.2'
+    - python: "3.5"
       env: DJANGO_VERSION='https://github.com/django/django/archive/master.tar.gz'
-  allow_failures:
-    - env: DJANGO_VERSION='https://github.com/django/django/archive/master.tar.gz'
+    - python: "3.6"
+      env: DJANGO_VERSION='Django>=1.4,<1.5'
+    - python: "3.6"
+      env: DJANGO_VERSION='Django>=1.5,<1.6'
+    - python: "3.6"
+      env: DJANGO_VERSION='Django>=1.6,<1.7'
+    - python: "3.6"
+      env: DJANGO_VERSION='Django>=1.7,<1.8'
+    - python: "3.6"
+      env: DJANGO_VERSION='Django>=1.8,<1.9'
+    - python: "3.6"
+      env: DJANGO_VERSION='Django>=1.9,<1.10'
+    - python: "3.6"
+      env: DJANGO_VERSION='Django>=1.10,<1.11'
+    - python: "3.7"
+      env: DJANGO_VERSION='Django>=1.4,<1.5'
+    - python: "3.7"
+      env: DJANGO_VERSION='Django>=1.5,<1.6'
+    - python: "3.7"
+      env: DJANGO_VERSION='Django>=1.6,<1.7'
+    - python: "3.7"
+      env: DJANGO_VERSION='Django>=1.7,<1.8'
+    - python: "3.7"
+      env: DJANGO_VERSION='Django>=1.8,<1.9'
+    - python: "3.7"
+      env: DJANGO_VERSION='Django>=1.9,<1.10'
+    - python: "3.7"
+      env: DJANGO_VERSION='Django>=1.10,<1.11'
 
 install:
   - pip install -q $DJANGO_VERSION

CHANGES.rst

@@ -1,3 +1,12 @@
+0.1.9 (2019-10-02)
+------------------
+
+* Added support for Django 2
+* Added support for Python 3.6
+* Drop support for Python (2.6, 3.3)
+* Thanks to:
+    * `hirokinko <https://github.com/hirokinko>`_
+
 0.1.6 (2017-05-10)
 ------------------
 
@@ -64,7 +73,7 @@
 
 * Test/example project
 * Now works if the first composant of the list of tuple is an integer
-* Now max_length is not required, the Multiselect field calculate it automatically. 
+* Now max_length is not required, the Multiselect field calculate it automatically.
 * The max_choices attr can be a attr in the model field
 * Refactor the code
 * Spanish translations
@@ -88,4 +97,4 @@
 0.0.1 (2012-09-27)
 ------------------
 
-* Initial version from the next `snippet <http://djangosnippets.org/snippets/1200/>`_
+* Initial version from the next `snippet <http://djangosnippets.org/snippets/1200/>`_

README.rst

@@ -16,7 +16,7 @@ This egg is inspired by this `snippet <http://djangosnippets.org/snippets/1200/>
 
 Supported Python versions: 2.7, 3.4+
 
-Supported Django versions: 1.11-2.0+
+Supported Django versions: 1.4-2.0+
 
 Installation
 ============
@@ -35,25 +35,25 @@ Configure your models.py
 .. code-block:: python
 
     from multiselectfield import MultiSelectField
-    
+
     # ...
-    
+
     MY_CHOICES = (('item_key1', 'Item title 1.1'),
                   ('item_key2', 'Item title 1.2'),
                   ('item_key3', 'Item title 1.3'),
                   ('item_key4', 'Item title 1.4'),
                   ('item_key5', 'Item title 1.5'))
-    
+
     MY_CHOICES2 = ((1, 'Item title 2.1'),
                    (2, 'Item title 2.2'),
                    (3, 'Item title 2.3'),
                    (4, 'Item title 2.4'),
                    (5, 'Item title 2.5'))
-    
+
     class MyModel(models.Model):
-        
+
         # .....
-        
+
         my_field = MultiSelectField(choices=MY_CHOICES)
         my_field2 = MultiSelectField(choices=MY_CHOICES2,
                                      max_choices=3,
@@ -103,7 +103,7 @@ Django REST Framework comes with a ``MultipleChoiceField`` that works perfectly
 .. code-block:: python
 
     from rest_framework import fields, serializers
-    
+
     from myapp.models import MY_CHOICES, MY_CHOICES2
 
     class MyModelSerializer(serializers.HyperlinkedModelSerializer):

example/app/test_msf.py

@@ -32,8 +32,12 @@
     u = str
 
 
-def get_field(model, name):
-    return model._meta.get_field(name)
+if VERSION < (1, 9):
+    def get_field(model, name):
+        return model._meta.get_field_by_name(name)[0]
+else:
+    def get_field(model, name):
+        return model._meta.get_field(name)
 
 
 class MultiSelectTestCase(TestCase):
@@ -73,8 +77,12 @@ def test_values_list(self):
         # call Field.from_db_field, it simply returns a Python representation
         # of the data in the database (which in our case is a string of
         # comma-separated values). The bug was fixed in Django 1.8+.
-        self.assertListEqual(tag_list_list, [['sex', 'work', 'happy']])
-        self.assertListEqual(categories_list_list, [['1', '3', '5']])
+        if VERSION >= (1, 6) and VERSION < (1, 8):
+            self.assertStringEqual(tag_list_list, [u('sex,work,happy')])
+            self.assertStringEqual(categories_list_list, [u('1,3,5')])
+        else:
+            self.assertListEqual(tag_list_list, [['sex', 'work', 'happy']])
+            self.assertListEqual(categories_list_list, [['1', '3', '5']])
 
     def test_form(self):
         form_class = modelform_factory(Book, fields=('title', 'tags', 'categories'))
@@ -131,17 +139,28 @@ def test_named_groups_form(self):
         self.assertEqual(len(form_class.base_fields), 1)
         form = form_class(initial={'published_in': ['BC', 'AK']})
 
-        expected_html = u("""<p><label>Province or State:</label> <ul id="id_published_in"><li>Canada - Provinces<ul id="id_published_in_0"><li><label for="id_published_in_0_0"><input id="id_published_in_0_0" name="published_in" type="checkbox" value="AB" /> Alberta</label></li>\n"""
+        expected_html = u("""<p><label for="id_published_in_0">Province or State:</label> <ul id="id_published_in"><li>Canada - Provinces<ul id="id_published_in_0"><li><label for="id_published_in_0_0"><input id="id_published_in_0_0" name="published_in" type="checkbox" value="AB" /> Alberta</label></li>\n"""
                           """<li><label for="id_published_in_0_1"><input checked="checked" id="id_published_in_0_1" name="published_in" type="checkbox" value="BC" /> British Columbia</label></li></ul></li>\n"""
                           """<li>USA - States<ul id="id_published_in_1"><li><label for="id_published_in_1_0"><input checked="checked" id="id_published_in_1_0" name="published_in" type="checkbox" value="AK" /> Alaska</label></li>\n"""
                           """<li><label for="id_published_in_1_1"><input id="id_published_in_1_1" name="published_in" type="checkbox" value="AL" /> Alabama</label></li>\n"""
                           """<li><label for="id_published_in_1_2"><input id="id_published_in_1_2" name="published_in" type="checkbox" value="AZ" /> Arizona</label></li></ul></li></ul></p>""")
 
         actual_html = form.as_p()
+        if (1, 11) <= VERSION:
+            # Django 1.11+ does not assign 'for' attributes on labels if they
+            # are group labels
+            expected_html = expected_html.replace('label for="id_published_in_0"', 'label')
+
+        if VERSION < (1, 6):
+            # Django 1.6 renders the Python repr() for each group (eg: tuples
+            # with HTML entities), so we skip the test for that version
+            self.assertEqual(expected_html.replace('\n', ''), actual_html.replace('\n', ''))
 
         if VERSION >= (2, 0):
             expected_html = expected_html.replace('input checked="checked"', 'input checked')
 
+        if VERSION >= (1, 7):
+            self.assertHTMLEqual(expected_html, actual_html)
         self.assertHTMLEqual(expected_html, actual_html)
 
 

example/app/views.py

@@ -14,14 +14,17 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with this software.  If not, see <http://www.gnu.org/licenses/>.
 
-
+from django import VERSION
 from django.conf import settings
 from django.contrib.auth import login
 from django.contrib.auth import get_user_model
-
-from django.urls import reverse
 from django.http import HttpResponseRedirect
 
+if VERSION >= (2, 0):
+    from django.urls import reverse
+else:
+    from django.core.urlresolvers import reverse
+
 
 def app_index(request):
     user = get_user_model().objects.get(username='admin')

example/example/settings.py

@@ -181,7 +181,7 @@
     'django.contrib.messages',
     'django.contrib.staticfiles',
     # Uncomment the next line to enable the admin:
-    'django.contrib.admin',
+    # 'django.contrib.admin',
     # Uncomment the next line to enable admin documentation:
     # 'django.contrib.admindocs',
 

example/example/urls.py

@@ -14,33 +14,54 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with this software.  If not, see <http://www.gnu.org/licenses/>.
 
+from django import VERSION
 from django.conf import settings
+from django.views.static import serve
+
+
 try:
     from django.conf.urls import include, url
-except ImportError:
-    from django.urls import include, url
-from django.contrib import admin
-from django.views.static import serve
 
+    # Compatibility for Django > 1.8
+    def patterns(prefix, *args):
+        if VERSION < (1, 9):
+            from django.conf.urls import patterns as django_patterns
+            return django_patterns(prefix, *args)
+        elif prefix != '':
+            raise NotImplementedError("You need to update your URLConf for "
+                                      "Django 1.10, or tweak it to remove the "
+                                      "prefix parameter")
+        else:
+            return list(args)
+except ImportError:  # Django < 1.4
+    if VERSION < (1, 4):
+        from django.conf.urls.defaults import include, patterns, url
+    else:
+        from django.urls import include, url
 
-admin.autodiscover()
 
 js_info_dict = {
     'packages': ('django.conf',),
 }
 
-urlpatterns = [
-    url(r'^', include('app.urls')),
-    url(r'^admin/', admin.site.urls),
-]
-
-urlpatterns += [
-    url(
-        r'^%s(?P<path>.*)$' % settings.MEDIA_URL[1:],
-        serve,
-        {
-            'document_root': settings.MEDIA_ROOT,
-            'show_indexes': True,
-        },
-    ),
-]
+if VERSION < (1, 11):
+    urlpatterns = patterns(
+        '',
+        url(r'^', include('app.urls')),
+    )
+    urlpatterns += patterns(
+        '',
+        url(r'^%s(?P<path>.*)$' % settings.MEDIA_URL[1:]),
+    )
+else:
+    urlpatterns = [
+        url(r'^', include('app.urls')),
+        url(
+            r'^%s(?P<path>.*)$' % settings.MEDIA_URL[1:],
+            serve,
+            {
+                'document_root': settings.MEDIA_ROOT,
+                'show_indexes': True,
+            },
+        ),
+    ]

example/run_tests.py

@@ -19,6 +19,7 @@
 import os
 import sys
 
+import django
 from django.conf import ENVIRONMENT_VARIABLE
 from django.core import management
 from django.core.wsgi import get_wsgi_application
@@ -29,6 +30,10 @@
 else:
     os.environ[ENVIRONMENT_VARIABLE] = sys.argv[1]
 
-application = get_wsgi_application()
+if django.VERSION[0] == 1 and django.VERSION[1] >= 7:
+    from django.core.wsgi import get_wsgi_application as get_wsgi_application_v1
+    application = get_wsgi_application_v1()
+else:
+    application = get_wsgi_application()
 
 management.call_command('test', 'app')

multiselectfield/db/fields.py

@@ -20,7 +20,6 @@
 
 from django.db import models
 from django.utils.text import capfirst
-from django.utils.encoding import python_2_unicode_compatible
 from django.core import exceptions
 
 from ..forms.fields import MultiSelectFormField, MinChoicesValidator, MaxChoicesValidator
@@ -47,7 +46,6 @@ def wrapper(cls):
     return wrapper
 
 
-@python_2_unicode_compatible
 class MSFList(list):
 
     def __init__(self, choices, *args, **kwargs):
@@ -58,6 +56,10 @@ def __str__(msgl):
         msg_list = [msgl.choices.get(int(i)) if i.isdigit() else msgl.choices.get(i) for i in msgl]
         return u', '.join([string_type(s) for s in msg_list])
 
+    if sys.version_info < (3,):
+        def __unicode__(self, msgl):
+            return self.__str__(msgl)
+
 
 class MultiSelectField(models.CharField):
     """ Choice values can not contain commas. """
@@ -102,7 +104,10 @@ def get_choices_selected(self, arr_choices):
         return choices_selected
 
     def value_to_string(self, obj):
-        value = super(MultiSelectField, self).value_from_object(obj)
+        try:
+            value = self._get_val_from_obj(obj)
+        except AttributeError:
+            value = super(MultiSelectField, self).value_from_object(obj)
         return self.get_prep_value(value)
 
     def validate(self, value, model_instance):