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import os
from django.core.management.base import NoArgsCommand
from optparse import make_option
class Command(NoArgsCommand):
option_list = NoArgsCommand.option_list + (
make_option('--ipython', action='store_true', dest='ipython',
help='Tells Django to use IPython, not BPython.'),
make_option('--plain', action='store_true', dest='plain',
help='Tells Django to use plain Python, not BPython nor IPython.'),
make_option('--no-pythonrc', action='store_true', dest='no_pythonrc',
help='Tells Django to use plain Python, not IPython.'),
)
help = "Like the 'shell' command but autoloads the models of all installed Django apps."
requires_model_validation = True
def handle_noargs(self, **options):
# XXX: (Temporary) workaround for ticket #1796: force early loading of all
# models from installed apps. (this is fixed by now, but leaving it here
# for people using 0.96 or older trunk (pre [5919]) versions.
from django.db.models.loading import get_models, get_apps
loaded_models = get_models()
use_ipython = options.get('ipython', False)
use_plain = options.get('plain', False)
use_pythonrc = not options.get('no_pythonrc', True)
# Set up a dictionary to serve as the environment for the shell, so
# that tab completion works on objects that are imported at runtime.
# See ticket 5082.
from django.conf import settings
imported_objects = {'settings': settings}
for app_mod in get_apps():
app_models = get_models(app_mod)
if not app_models:
continue
model_labels = ", ".join([model.__name__ for model in app_models])
print self.style.SQL_COLTYPE("From '%s' autoload: %s" % (app_mod.__name__.split('.')[-2], model_labels))
for model in app_models:
try:
imported_objects[model.__name__] = getattr(__import__(app_mod.__name__, {}, {}, model.__name__), model.__name__)
except AttributeError, e:
print self.style.ERROR("Failed to import '%s' from '%s' reason: %s" % (model.__name__, app_mod.__name__.split('.')[-2], str(e)))
continue
try:
if use_plain:
# Don't bother loading B/IPython, because the user wants plain Python.
raise ImportError
try:
if use_ipython:
# User wants IPython
raise ImportError
from bpython import embed
embed(imported_objects)
except ImportError:
# Explicitly pass an empty list as arguments, because otherwise IPython
# would use sys.argv from this script.
try:
from IPython.core.iplib import InteractiveShell
shell = InteractiveShell(user_ns=imported_objects)
except ImportError:
import IPython
shell = IPython.Shell.IPShell(argv=[], user_ns=imported_objects)
shell.mainloop()
except ImportError:
# Using normal Python shell
import code
try: # Try activating rlcompleter, because it's handy.
import readline
except ImportError:
pass
else:
# We don't have to wrap the following import in a 'try', because
# we already know 'readline' was imported successfully.
import rlcompleter
readline.set_completer(rlcompleter.Completer(imported_objects).complete)
readline.parse_and_bind("tab:complete")
# We want to honor both $PYTHONSTARTUP and .pythonrc.py, so follow system
# conventions and get $PYTHONSTARTUP first then import user.
if use_pythonrc:
pythonrc = os.environ.get("PYTHONSTARTUP")
if pythonrc and os.path.isfile(pythonrc):
try:
execfile(pythonrc)
except NameError:
pass
# This will import .pythonrc.py as a side-effect
import user
code.interact(local=imported_objects)
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