def __init__(self, *args, **kwargs):
# Options are defined in an __init__ method to support swapping out
# custom user models in tests.
super(Command, self).__init__(*args, **kwargs)
self.UserModel = get_user_model()
self.username_field = self.UserModel._meta.get_field(self.UserModel.USERNAME_FIELD)
self.option_list = BaseCommand.option_list + (
make_option('--%s' % self.UserModel.USERNAME_FIELD, dest=self.UserModel.USERNAME_FIELD, default=None,
help='Specifies the login for the superuser.'),
make_option('--noinput', action='store_false', dest='interactive', default=True,
help=('Tells Django to NOT prompt the user for input of any kind. '
'You must use --%s with --noinput, along with an option for '
'any other required field. Superusers created with --noinput will '
' not be able to log in until they\'re given a valid password.' %
self.UserModel.USERNAME_FIELD)),
make_option('--database', action='store', dest='database',
default=DEFAULT_DB_ALIAS, help='Specifies the database to use. Default is "default".'),
) + tuple(
make_option('--%s' % field, dest=field, default=None,
help='Specifies the %s for the superuser.' % field)
for field in self.UserModel.REQUIRED_FIELDS
)
python类option_list()的实例源码
def __init__(self, **kwargs):
if self.options:
self.option_list = self.__class__.option_list + self.options
super(DanubeCloudCommand, self).__init__(**kwargs)
def create_parser(self, prog_name, subcommand):
test_runner_class = get_runner(settings, self.test_runner)
options = self.option_list + getattr(
test_runner_class, 'option_list', ())
return OptionParser(prog=prog_name,
usage=self.usage(subcommand),
version=self.get_version(),
option_list=options)
def call_command(name, *args, **options):
"""
Calls the given command, with the given options and args/kwargs.
This is the primary API you should use for calling specific commands.
Some examples:
call_command('syncdb')
call_command('shell', plain=True)
call_command('sqlall', 'myapp')
"""
# Load the command object.
try:
app_name = get_commands()[name]
except KeyError:
raise CommandError("Unknown command: %r" % name)
if isinstance(app_name, BaseCommand):
# If the command is already loaded, use it directly.
klass = app_name
else:
klass = load_command_class(app_name, name)
# Grab out a list of defaults from the options. optparse does this for us
# when the script runs from the command line, but since call_command can
# be called programatically, we need to simulate the loading and handling
# of defaults (see #10080 for details).
defaults = {}
for opt in klass.option_list:
if opt.default is NO_DEFAULT:
defaults[opt.dest] = None
else:
defaults[opt.dest] = opt.default
defaults.update(options)
return klass.execute(*args, **defaults)
def option_list(self):
return [x for x in self.options
if x._long_opts[0] not in self.skip_opts]
def execute(self):
"""
Given the command-line arguments, this figures out which subcommand is
being run, creates a parser appropriate to that command, and runs it.
"""
# Preprocess options to extract --settings and --pythonpath.
# These options could affect the commands that are available, so they
# must be processed early.
parser = LaxOptionParser(usage="%prog subcommand [options] [args]",
version=get_version(),
option_list=BaseCommand.option_list)
self.autocomplete()
try:
options, args = parser.parse_args(self.argv)
handle_default_options(options)
except:
pass # Ignore any option errors at this point.
try:
subcommand = self.argv[1]
except IndexError:
subcommand = 'help' # Display help if no arguments were given.
if subcommand == 'help':
if len(args) <= 2:
parser.print_lax_help()
sys.stdout.write(self.main_help_text() + '\n')
elif args[2] == '--commands':
sys.stdout.write(self.main_help_text(commands_only=True) + '\n')
else:
self.fetch_command(args[2]).print_help(self.prog_name, args[2])
elif subcommand == 'version':
sys.stdout.write(parser.get_version() + '\n')
# Special-cases: We want 'django-admin.py --version' and
# 'django-admin.py --help' to work, for backwards compatibility.
elif self.argv[1:] == ['--version']:
# LaxOptionParser already takes care of printing the version.
pass
elif self.argv[1:] in (['--help'], ['-h']):
parser.print_lax_help()
sys.stdout.write(self.main_help_text() + '\n')
else:
self.fetch_command(subcommand).run_from_argv(self.argv)
