compatible with django 2.x

dynamic_forms/migrations/0001_initial.py

@@ -36,7 +36,7 @@ class Migration(migrations.Migration):
             name = 'FormFieldModel',
             fields = [
                 ('id', models.AutoField(serialize=False, auto_created=True, primary_key=True, verbose_name='ID'),),
-                ('parent_form', models.ForeignKey(to_field='id', to='dynamic_forms.FormModel'),),
+                ('parent_form', models.ForeignKey(to_field='id', to='dynamic_forms.FormModel', on_delete=django.db.models.deletion.CASCADE),),
                 ('field_type', models.CharField(max_length=255, choices=(
                     ('dynamic_forms.formfields.BooleanField', 'Boolean',),
                     ('dynamic_forms.formfields.ChoiceField', 'Choices',),

dynamic_forms/migrations/0003_auto_20140916_1433.py

@@ -15,7 +15,7 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='formfieldmodel',
             name='parent_form',
-            field=models.ForeignKey(related_name='fields', to='dynamic_forms.FormModel'),
+            field=models.ForeignKey(related_name='fields', to='dynamic_forms.FormModel', on_delete=django.db.models.deletion.CASCADE),
         ),
         migrations.AlterField(
             model_name='formmodeldata',

dynamic_forms/models.py

@@ -3,8 +3,15 @@
 
 import json
 from collections import OrderedDict
+from distutils.version import StrictVersion
+from django import get_version
+
+django_version = get_version()
+if StrictVersion(django_version) >= StrictVersion('2.0'):
+    from django.urls import reverse
+else:
+    from django.core.urlresolvers import reverse
 
-from django.core.urlresolvers import reverse
 from django.db import models
 from django.db.transaction import atomic
 from django.template.defaultfilters import slugify

dynamic_forms/urls.py

@@ -1,10 +1,19 @@
 # -*- coding: utf-8 -*-
 
-from django.conf.urls import url
+from distutils.version import StrictVersion
+
+from django import get_version
+
+django_version = get_version()
+if StrictVersion(django_version) >= StrictVersion('2.0'):
+    from django.urls import re_path
+else:
+    from django.conf.urls import url as re_path
 
 from .views import data_set_detail
 
+app_name = 'dynamic_forms'
+
 urlpatterns = [
-    url(r'show/(?P<display_key>[a-zA-Z0-9]{24})/$', data_set_detail,
-        name='data-set-detail'),
+    re_path(r'show/(?P<display_key>[a-zA-Z0-9]{24})/$', data_set_detail, name='data-set-detail'),
 ]