Django ProgrammingError in Fields on PostgreSQL

Question

models.py

class Stop(models.Model):
    idn = models.PositiveIntegerField(primary_key=True, unique=True)
    label = models.CharField(null=False, blank=False, max_length=512)
    coor_x = models.FloatField()
    coor_y = models.FloatField()
    buses = models.ManyToManyField(Bus)
    latest_query_datetime = models.DateTimeField(default=datetime(2000, 1, 1, 0, 0, 0))
    latest_query_data = JSONField(default={})

    class Meta:
    ordering = ["label"]

    def __str__(self):
    return self.label

When I run:

python3 manage.py makemigrations && python3 manage.py migrate

It raises a ProgrammingError saying that jsonb datatype does not exist:

Migrations for 'rest':
  0007_auto_20160612_1301.py:
    - Alter field latest_query_data on stop
Operations to perform:
  Apply all migrations: contenttypes, rest, auth, sessions, admin
Running migrations:
  Rendering model states... DONE
  Applying rest.0005_auto_20160612_1237...Traceback (most recent call last):
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
psycopg2.ProgrammingError: type "jsonb" does not exist
LINE 1: ... TABLE "rest_stop" ADD COLUMN "latest_query_data" jsonb DEFA...
                                                         ^


The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/core/management/__init__.py", line 353, in execute_from_command_line
    utility.execute()
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/core/management/__init__.py", line 345, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/core/management/base.py", line 348, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/core/management/base.py", line 399, in execute
    output = self.handle(*args, **options)
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/core/management/commands/migrate.py", line 200, in handle
    executor.migrate(targets, plan, fake=fake, fake_initial=fake_initial)
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/db/migrations/executor.py", line 92, in migrate
    self._migrate_all_forwards(plan, full_plan, fake=fake, fake_initial=fake_initial)
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/db/migrations/executor.py", line 121, in _migrate_all_forwards
    state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/db/migrations/executor.py", line 198, in apply_migration
    state = migration.apply(state, schema_editor)
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/db/migrations/migration.py", line 123, in apply
    operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/db/migrations/operations/fields.py", line 62, in database_forwards
    field,
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/db/backends/base/schema.py", line 396, in add_field
    self.execute(sql, params)
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/db/backends/base/schema.py", line 110, in execute
    cursor.execute(sql, params)
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/db/backends/utils.py", line 79, in execute
    return super(CursorDebugWrapper, self).execute(sql, params)
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/db/utils.py", line 95, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/utils/six.py", line 685, in reraise
    raise value.with_traceback(tb)
  File "/home/erayerdin/.venv/eshot-api/lib/python3.5/site-packages/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: type "jsonb" does not exist
LINE 1: ... TABLE "rest_stop" ADD COLUMN "latest_query_data" jsonb DEFA...

I use PostgreSQL to use JSONField and update it when a user requests a view. If I do not use default={}, it tells me to make one.

Further Analysis

I changed latest_query_data field to TextField so that I can store as string and convert to dict when I need. However, this also raised the same error.

---

Environment

• django 1.9.6
• psycopg 2.6.1

Answer 1

According to the Django docs, JSONField requires PostgreSQL ≥ 9.4 and Psycopg2 ≥ 2.5.4

What PostgreSQL version are you using?

See https://docs.djangoproject.com/en/dev/ref/contrib/postgres/fields/#django.contrib.postgres.fields.JSONField

Ubuntu 14.04 repositories contain only 9.3 version. You can review this to upgrade your version.