JSON field better handling

backend/migrations/0025_auto_20180829_2101.py

+# Generated by Django 2.0.3 on 2018-08-29 19:01
+
+import django.contrib.postgres.fields.jsonb
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('backend', '0024_auto_20180829_1840'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='pendingmoderation',
+            name='new_object',
+            field=django.contrib.postgres.fields.jsonb.JSONField(default=dict),
+        ),
+        migrations.AlterField(
+            model_name='previousdeparturefeedback',
+            name='courses_and_courses_feedback',
+            field=django.contrib.postgres.fields.jsonb.JSONField(default=dict),
+        ),
+        migrations.AlterField(
+            model_name='userdata',
+            name='config',
+            field=django.contrib.postgres.fields.jsonb.JSONField(default=dict),
+        ),
+        migrations.AlterField(
+            model_name='userdata',
+            name='contact_info',
+            field=django.contrib.postgres.fields.jsonb.JSONField(default=dict),
+        ),
+        migrations.AlterField(
+            model_name='userdata',
+            name='other_data',
+            field=django.contrib.postgres.fields.jsonb.JSONField(default=dict),
+        ),
+    ]

backend/models/module/basicModule.py

@@ -7,7 +7,7 @@ from django.contrib.postgres.fields import JSONField
 class BasicModule(MyModelVersionned):
 
     comment = models.TextField(blank=True)
-    usefull_links = UsefullLinksField(blank=True)
+    usefull_links = UsefullLinksField(blank=True, default=list)
     custom_content = JSONField(blank=True, default=dict)
 
     class Meta:

backend/models/my_model/pendingModeration.py

@@ -14,7 +14,7 @@ class PendingModeration(models.Model):
     updated_by = models.ForeignKey(User, on_delete=models.CASCADE)
     updated_on = models.DateTimeField(null=True)
 
-    new_object = JSONField(default={})
+    new_object = JSONField(default=dict)
 
     class Meta:
         unique_together = ('content_type', 'object_id')

backend/models/tools/usefullLinksField.py

@@ -31,5 +31,5 @@ class UsefullLinksField(JSONField):
 
     def __init__(self, *args, **kwargs):
         kwargs['validators'] = [validate_usefull_links]
-        kwargs['default'] = []
+        kwargs['default'] = list
         super(UsefullLinksField, self).__init__(*args, **kwargs)

backend/models/user/previousDepartureFeedback.py

@@ -10,7 +10,7 @@ class PreviousDepartureFeedback(UserRestrictedModule):
     departure = models.OneToOneField(
         PreviousDeparture, on_delete=models.CASCADE)
 
-    courses_and_courses_feedback = JSONField(null=True)
+    courses_and_courses_feedback = JSONField(default=dict)
     adequation_comment = models.TextField()
     integration_comment = models.TextField()
     adequation_grate = models.PositiveIntegerField(

backend/models/user/userData.py

@@ -9,12 +9,12 @@ from backend.models.tools import NoDelete, IsOwner
 
 class UserData(MyModel):
     owner = models.OneToOneField(User, on_delete=models.CASCADE)
-    contact_info = JSONField(null=True, default={})
+    contact_info = JSONField(default=dict)
     contact_info_is_public = models.BooleanField(default=False)
-    config = JSONField(null=True, default={})
+    config = JSONField(default=dict)
     black_list = models.ManyToManyField(
         University, related_name='+', blank=True)
-    other_data = JSONField(null=True, default={})
+    other_data = JSONField(default=dict)
 
 
 class UserDataSerializer(MyModelSerializer):