Permission denied after import DB in PostgreSQL

This post extends previous with the similar title.

When you transfer database from one machine to another, postgres privileges needed to be re-granted to the db user. Usually it is made by command:

GRANT ALL PRIVILEGES ON DATABASE mydb TO mydb_user;

But in my case it’s not working. So you need to explicitly grant privileges for each sql-object:

GRANT ALL ON ALL TABLES IN SCHEMA public TO mydb_user;
GRANT ALL ON ALL FUNCTIONS IN SCHEMA public TO mydb_user;
GRANT ALL ON ALL SEQUENCES IN SCHEMA public TO mydb_user;

Making this solving error “django.db.utils.ProgrammingError: permission denied for relation django_migrations”.