Django call command with parameters

Question

I've a management command with the following argument parser section:

class Command(BaseCommand):
    def add_arguments(self, parser):
        parser.add_argument('--out', action='store', dest='out', required=True)
        parser.add_argument('--todos', action='store', dest='todos', \
                required=True, nargs='+')
        parser.add_argument('--filter', action='store', dest='filter')
        parser.add_argument('--list', action='store', dest='list')
        parser.add_argument('--add_id', action='store_true', dest='add_id')

. I'm trying to call this command from a view / shell, but does not work:

from django.core.management import call_command
call_command('prg_name', out='/tmp/111.txt')

, however i got the following error: argument --out is required .

The program is kinda old: python: 2.7 Django: 1.11.16

.

How should i call the call_command with parameters with this old layout?

What is strange, if i do this:

dt = {'--out=/tmp/111.txt': sth}
call_command(prg_name, *dt)

it works, however i can't define more value for --todos .

but here you perform sequence unpacking (there is only one asterisk *, not multiple ones), hence it will only look at the keys of the dictionaries, but you can pass a tuple, list, any iterable anyway. — willeM_ Van Onsem
– willeM_ Van Onsem, Commented Mar 7, 2020 at 21:31

willeM_ Van Onsem · Accepted Answer · 2020-03-07 22:03:23Z

7

You can just pass an arbitrary number of strings to the command:

call_command(prg_name, '--out=/tmp/111.txt', '--todos', '8', '12', '105', '51')

You can see these as the parameters that you would have passed to your program if you called it from the command line.

edited Mar 7, 2020 at 22:03

answered Mar 7, 2020 at 21:30

willeM_ Van Onsem

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10 Comments

user2194805 Over a year ago

Well, it solves the problem of --out, but for the --todos it takes only the latest one..

willeM_ Van Onsem Over a year ago

@user2194805: are you sure that is not because of the handling in your command itself. I would find it strange that the call_command itself is the problem since this basically just passes these, and are parsed by the argument parser: github.com/django/django/blob/master/django/core/management/…

willeM_ Van Onsem Over a year ago

@user2194805: what if you run the command from the command line?

user2194805 Over a year ago

It works fine from the command line: python manage.py create_document --out /tmp/444 --todos 8 12 105 51 {'add_id': False, 'settings': None, 'pythonpath': None, 'verbosity': 1, 'traceback': False, 'list': None, 'filter': None, 'no_color': False, 'todos': ['8', '12', '105', '51'], 'out': '/tmp/444'}

willeM_ Van Onsem Over a year ago

@user2194805: ah, but then you need to pass it like that as well.

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