Database migration operations

All of these operations are available from the django.contrib.postgres.operations module.

Creating extension using migrations

You can create a PostgreSQL extension in your database using a migration file. This example creates an hstore extension, but the same principles apply for other extensions.

Set up the hstore extension in PostgreSQL before the first CreateModel or AddField operation that involves HStoreField by adding a migration with the HStoreExtension operation. For example:

from django.contrib.postgres.operations import HStoreExtension

class Migration(migrations.Migration):
    ...

    operations = [
        HStoreExtension(),
        ...
    ]

Creating the extension requires a database user with superuser privileges. If the Django database user doesn’t have superuser privileges, you’ll have to create the extension outside of Django migrations with a user that has the appropriate privileges. In that case, connect to your Django database and run the query CREATE EXTENSION IF NOT EXISTS hstore;.

`CreateExtension`

class CreateExtension(name)

An Operation subclass which installs PostgreSQL extensions.

name: This is a required argument. The name of the extension to be installed.

`BtreeGinExtension`

class BtreeGinExtension: Install the btree_gin extension.

`BtreeGistExtension`

class BtreeGistExtension: New in Django 2.0:

Install the btree_gist extension.

`CITextExtension`

class CITextExtension: Installs the citext extension.

`CryptoExtension`

class CryptoExtension: New in Django 2.0:

Installs the pgcrypto extension.

`HStoreExtension`

class HStoreExtension: Installs the hstore extension and also sets up the connection to interpret hstore data for possible use in subsequent migrations.

`TrigramExtension`

class TrigramExtension: Installs the pg_trgm extension.

`UnaccentExtension`

class UnaccentExtension: Installs the unaccent extension.