Django测试：创建测试数据库时出错：权限被拒绝复制数据库“template_postgis”

Question

I am am working on setting up Django Project for running tests . But I am getting below error:

Got an error creating the test database: permission denied to copy database "template_postgis"

Note : My default application's database is working fine. The issue is happening while running tests .

Complete stack trace is as:

moin@moin-pc:~/workspace/mozio$ python manage.py test --verbosity=3
nosetests --verbosity=3
nose.config: INFO: Ignoring files matching ['^\\.', '^_', '^setup\\.py$']
Creating test database for alias 'default' ('test_my_db')...
Got an error creating the test database: permission denied to copy database "template_postgis"

Type 'yes' if you would like to try deleting the test database 'test_mozio_db_test', or 'no' to cancel: yes
Destroying old test database 'default'...
Got an error recreating the test database: must be owner of database test_mozio_db_test

Below is the DATABASE configuration of setting.py :

POSTGIS_VERSION = (2, 2, 2)

DATABASES = {
    'default': {
        'ENGINE': 'django.contrib.gis.db.backends.postgis',
        'NAME': 'my_db',
        'USER': 'my_user',
        'PASSWORD': 'my_pass',
        'HOST': '<HOST_IP',
        'PORT': '',
        'TEST': {
            'NAME': 'test_my_db',
        },
    }
}

Any help regarding this? Below are the steps I tried:

• Grant create DB access to user:

   ALTER USER my_user CREATEDB; 

• Grant all privileges to user for test_my_db database:

   GRANT ALL PRIVILEGES ON DATABASE test_mozio_db_test to mozio; 

---

Edit : After fixing above issue, I was also getting error as:

django.db.utils.ProgrammingError: type "geometry" does not exist
LINE 5:     "polygon" geometry(POLYGON,4326) NOT NULL,

Updated my answer to fix both the issues.

Answer 1

I finally found how to fix this issue. The problem is that when I created template_postgis , I didn't set it to be a template .

You can check it via doing:

SELECT * FROM pg_database;

You can fix it by setting datistemplate=true for template_postgis by running:

update pg_database set datistemplate=true where datname='template_postgis';

---

After that in case you are getting error related to geometry like:

django.db.utils.ProgrammingError: type "geometry" does not exist
LINE 5:     "polygon" geometry(POLYGON,4326) NOT NULL,

That is because you need to add extension postgix with database. In order to fix this, add postgis to template_postgis like:

psql -d psql -d template_postgis -c 'create extension postgis;'

Note : You must be superuser to create this extension.

Answer 2

Install packages first correctly.

sudo apt-get update
sudo apt-get install python-pip python-dev libpq-dev postgresql postgresql-contrib

During installation postgres user is created automatically.

 sudo su - postgres

You should now be in a shell session for the postgres user. Log into a Postgres session by typing:

 psql

 CREATE DATABASE myproject;

In your settings.py.

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2',
        'NAME': 'myproject',
        'USER': 'postgres',
        'PASSWORD': 'password',
        'HOST': 'localhost',
        'PORT': '',
    }
}