How to add Django script to access model objects without using manage py shell

Question

I'm writing a script to import some model objects into the database my django application uses. In the past I've solved this by running ./manage.py shell and then import myscript. I'm sure there's a better way. I'd like to be able to call a script from anywhere on my HD using python scriptname.py, and in the first few lines of that script it would do whatever imports / other operations necessary so that it can access model objects and behave as though it was run using manage.py shell.

What do I need to add to my script to achieve this?

Answer 1

Hello @kartik,

Use the following and you will be able to access your model:

import os

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "your_project_name.settings")

# your imports, e.g. Django models
from your_project_name.models import Location

# From now onwards start your script..

Here is an example to access and modify your model:

if __name__ == '__main__':    
    # e.g. add a new location
    l = Location()
    l.name = 'Berlin'
    l.save()

    # this is an example to access your model
    locations = Location.objects.all()
    print locations

    # e.g. delete the location
    berlin = Location.objects.filter(name='Berlin')
    print berlin
    berlin.delete()

Example model:

class Location(models.Model):
    name = models.CharField(max_length=100)

Hope it helps!

Thank You!!

Comments

django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.

This error comes..!!

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Hello @gijoe143,

There might be something in your portfolio_showcase app or root url config that is causing the problem. Don’t add django.setup() to settings.