In Django project, We could manage by executing some commands which could be invoked through the manage.py.

For example:

# Sync database
python manage.py syncdb

# Start the webserver
python manage.py runserver

Management Command is used to create our own actions with manage.py.

If your app is in projectdirectory then create the directories projectdirectory/app/management/commands.

Create an empty file called __init__.py in both the management and commands directories. Once you’ve done that every other python file in the commands directory can be executed via manage.py.

If you create the file project/app/management/commands/management_command.py. Django will register a manage.py command for each Python module in that directory whose name doesn’t begin with an underscore, then it can be run as manage.py management_command.

In the app which the command is used for make the following directory structure:

management/
    __init__.py
    commands/
        __init__.py
        your_command_name.py


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

from django.conf import settings

from django.core.management import call_command

import json

class Command(BaseCommand):

    args = ''

    help = 'Loads the initial data in to database'

    def handle(self, *args, **options):
        # Your Code
        call_command('loaddata', 'peeldb/fixtures/countries.json', verbosity=0)
        call_command('loaddata', 'peeldb/fixtures/states.json', verbosity=0)
        call_command('loaddata', 'peeldb/fixtures/cities.json', verbosity=0)
        call_command('loaddata', 'peeldb/fixtures/skills.json', verbosity=0)
        call_command('loaddata', 'peeldb/fixtures/industries.json', verbosity=0)
        call_command('loaddata', 'peeldb/fixtures/qualification.json', verbosity=0)
        result = {'message': "Successfully Loading initial data"}
        return json.dumps(result)
 

In the above example, i'm using management command to load the initial data from the fixtures into the database.In the above code, call_command calls the built in management commands, with the given options and args/kwargs.

Some examples:
call_command(‘syncdb’), call_command(‘shell’, plain=True), call_command(‘sqlall’, ‘myapp’)

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