fix migrations

CHANGELOG.rst

@@ -7,6 +7,11 @@ master
 
 * in development
 
+2.0.1
+-----
+
+* Fixed migration issue #70
+
 2.0.0
 -----
 

example/migrations/0008_auto_20180315_2127.py

@@ -0,0 +1,38 @@
+# Generated by Django 2.0.3 on 2018-03-15 21:27
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('example', '0007_auto_20180130_1120'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='exampleformsubmission',
+            options={'ordering': ['-submit_time'], 'verbose_name': 'Form submission'},
+        ),
+        migrations.AlterField(
+            model_name='exampleformsubmission',
+            name='form',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='wagtailstreamforms.BaseForm', verbose_name='Form'),
+        ),
+        migrations.AlterField(
+            model_name='exampleformsubmission',
+            name='form_data',
+            field=models.TextField(verbose_name='Form data'),
+        ),
+        migrations.AlterField(
+            model_name='exampleformsubmission',
+            name='page',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='wagtailcore.Page'),
+        ),
+        migrations.AlterField(
+            model_name='exampleformsubmission',
+            name='submit_time',
+            field=models.DateTimeField(auto_now_add=True, verbose_name='Submit time'),
+        ),
+    ]

wagtailstreamforms/__init__.py

@@ -1 +1 @@
-__version__ = '2.0.0'
+__version__ = '2.0.1'

wagtailstreamforms/migrations/0011_auto_20180130_0844.py

@@ -7,6 +7,7 @@
 import modelcluster.fields
 import wagtailstreamforms.fields
 import wagtailstreamforms.models.form
+import wagtailstreamforms.models.form_field
 
 
 class Migration(migrations.Migration):
@@ -114,7 +115,7 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='formfield',
             name='field_type',
-            field=models.CharField(choices=[('singleline', 'Single line text'), ('multiline', 'Multi-line text'), ('email', 'Email'), ('number', 'Number'), ('url', 'URL'), ('checkbox', 'Checkbox'), ('checkboxes', 'Checkboxes'), ('dropdown', 'Drop down'), ('multiselect', 'Multiple select'), ('radio', 'Radio buttons'), ('date', 'Date'), ('datetime', 'Date/time'), ('regexfield', 'Regex validated field')], max_length=16, verbose_name='Field type'),
+            field=models.CharField(choices=wagtailstreamforms.models.form_field.get_form_field_choices(), max_length=16, verbose_name='Field type'),
         ),
         migrations.AlterField(
             model_name='formfield',