Produits Entr'ouvert » Passerelle

# passerelle - uniform access to multiple data sources and services

# Copyright (C) 2017  Entr'ouvert

#

# This program is free software: you can redistribute it and/or modify it

# under the terms of the GNU Affero General Public License as published

# by the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU Affero General Public License for more details.

#

# You should have received a copy of the GNU Affero General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from django.db import connection

from django.apps import apps

from django.core.management.base import BaseCommand, CommandError

from django.contrib.postgres.fields import JSONField

class Command(BaseCommand):

    help = 'Ensure all JSON fields are of type jsonb'

    def handle(self, **options):

        for app in apps.get_models():

            for field in app._meta.get_fields():

                if isinstance(field, JSONField):

                    db_type = field.db_type(connection)

                    if db_type == 'jsonb':

                        continue

                    with connection.cursor() as cursor:

                        query = 'ALTER TABLE "%(schema_name)s"."%(table_name)s" ALTER COLUMN "%(column_name)s" TYPE jsonb USING "%(column_name)s"::jsonb'

                        params = {

                            'schema_name': connection.get_tenant().schema_name,

                            'table_name': app._meta.db_table,

                            'column_name': app._meta.get_field(field.name).column

                        }

                        try:

                            cursor.execute(query % params)

                        except Exception as e:

                            raise CommandError(e)