Django custom command - Not Implemented Error

Question

I'm trying to set up a cronjob on my Ubuntu server to run a django .py file - but I'm having trouble running the script first.

I'm using the command python3 /opt/mydir/manage.py updatefm

which produces the error:

File "/opt/mydir/manage.py", line 15, in <module>
    execute_from_command_line(sys.argv)
  File "/usr/local/lib/python3.4/site-packages/django/core/management/__init__.py", line 399, in execute_from_command_line
    utility.execute()
  File "/usr/local/lib/python3.4/site-packages/django/core/management/__init__.py", line 392, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/usr/local/lib/python3.4/site-packages/django/core/management/base.py", line 242, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/usr/local/lib/python3.4/site-packages/django/core/management/base.py", line 285, in execute
    output = self.handle(*args, **options)
  File "/usr/local/lib/python3.4/site-packages/django/core/management/base.py", line 324, in handle
    raise NotImplementedError()
NotImplementedError

Can anybody enlighten my on what I'm doing incorrect? Here is my script and structure:

/mydir
   /mydir
      __init__.py
      /management
         __init__.py
         /commands
            updatefm.py

updatefm.py

class Command(BaseCommand):
    args = ''
    help = 'Help Test'
    def update_auto(self, *args, **options):
        hi = 'test'

My app name is listed in settings.py as it should be.

You seem to be missing a __init__.py inside your /commands directory. Also, I'm not a 100% sure, but I believe you should import said command as well in your manage.py — Daniel Kravetz Malabud
– Daniel Kravetz Malabud, Commented Aug 31, 2016 at 19:21
I think in the documentation it says I only need __init__.py in /commands directory if i'm using python2 docs.djangoproject.com/en/1.7/howto/custom-management-commands/… — rednaxela
– rednaxela, Commented Aug 31, 2016 at 19:25
NotImplementedError means you haven't implemented the full API for a subclass and the parent class can't do it for you. It's being raised by the handle method. You don't implement that. Seems like you should. — Two-Bit Alchemist
– Two-Bit Alchemist, Commented Aug 31, 2016 at 19:25
@rednaxela, a quote from the docs : "On Python 2, be sure to include init.py files in both the management and management/commands directories as done above or your command will not be detected." — Daniel Kravetz Malabud
– Daniel Kravetz Malabud, Commented Aug 31, 2016 at 19:26

itzMEonTV · Accepted Answer · 2016-08-31 19:33:52Z

1

Check __init__.py inside commands folder. Then you have to use handle method

class Command(BaseCommand):
    args = ''
    help = 'Help Test'
    def handle(self, *args, **options):
        hi = 'test

For more info https://docs.djangoproject.com/en/dev/howto/custom-management-commands/#django.core.management.BaseCommand.handle

answered Aug 31, 2016 at 19:33

itzMEonTV

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1 Comment

rednaxela Over a year ago

Ahh, I didn't realise it actually had to be named handle(). thanks

Daniel Kravetz Malabud · Accepted Answer · 2016-08-31 19:38:51Z

1

Classes inheriting from BaseCommand must implement the method handle.

In your case, you should change

def update_auto(self, *args, **options):

to

def handle(self, *args, **options):

answered Aug 31, 2016 at 19:38

Daniel Kravetz Malabud

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