import re
from django import http,template
from django.contrib.admin import ModelAdmin
from django.contrib.admin import actions
from django.contrib.auth import authenticate,login
from django.views.decorators.csrf import csrf_protect
from django.db.models.base import ModelBase
from django.core.exceptions import ImproperlyConfigured
from django.core.urlresolvers import reverse
from django.shortcuts import render_to_response
from django.utils.functional import update_wrapper
from django.utils.safestring import mark_safe
from django.utils.text import capfirst
from django.utils.translation import ugettext_lazy,ugettext
from django.views.decorators.cache import never_cache
from django.conf import settings
try:
set
except NameError:
from sets import Set
ERROR_MESSAGE = ugettext_lazy("Please enter a correct username and password. Note that both fields are case-sensitive.")
LOGIN_FORM_KEY = 'this_is_the_login_form'
class AlreadyRegistered(Exception):
pass
class NotRegistered(Exception):
pass
class AdminSite(object):
"""
An AdminSite object encapsulates an instance of the Django admin application, ready
to be hooked in to your URLconf. Models are registered with the AdminSite using the
register() method, and the root() method can then be used as a Django view function
that presents a full admin interface for the collection of registered models.
"""
index_template = None
app_index_template = None
login_template = None
logout_template = None
password_change_template = None
password_change_done_template = None
def __init__(self, name=None, app_name='admin'):
self._registry = {} # model_class class -> admin_class instance
self.root_path = None
if name is None:
self.name = 'admin'
else:
self.name = name
self.app_name = app_name
self._actions = {'delete_selected': actions.delete_selected}
self._global_actions = self._actions.copy()
def register(self, model_or_iterable, admin_class=None, **options):
"""
Registers the given model(s) with the given admin class.
The model(s) should be Model classes, not instances.
If an admin class isn't given, it will use ModelAdmin (the default
admin options). If keyword arguments are given -- e.g., list_display --
they'll be applied as options to the admin class.
If a model is already registered, this will raise AlreadyRegistered.
"""
if not admin_class:
admin_class = ModelAdmin
# Don't import the humongous validation code unless required
if admin_class and settings.DEBUG:
from django.contrib.admin.validation import validate
else:
validate = lambda model, adminclass: None
if isinstance(model_or_iterable, ModelBase):
model_or_iterable = [model_or_iterable]
for model in model_or_iterable:
if model in self._registry:
raise AlreadyRegistered('The model %s is already registered' % model.__name__)
# If we got **options then dynamically construct a subclass of
# admin_class with those **options.
if options:
# For reasons I don't quite understand, without a __module__
# the created class appears to "live" in the wrong place,
# which causes issues later on.
options['__module__'] = __name__
admin_class = type("%sAdmin" % model.__name__, (admin_class,), options)
# Validate (which might be a no-op)
validate(admin_class, model)
# Instantiate the admin class to save in the registry
self._registry[model] = admin_class(model, self)
def unregister(self, model_or_iterable):
"""
Unregisters the given model(s).
If a model isn't already registered, this will raise NotRegistered.
"""
if isinstance(model_or_iterable, ModelBase):
model_or_iterable = [model_or_iterable]
for model in model_or_iterable:
if model not in self._registry:
raise NotRegistered('The model %s is not registered' % model.__name__)
del self._registry[model]
def add_action(self, action, name=None):
"""
Register an action to be available globally.
"""
name = name or action.__name__
self._actions[name] = action
self._global_actions[name] = action
def disable_action(self, name):
"""
Disable a globally-registered action. Raises KeyError for invalid names.
"""
del self._actions[name]
def get_action(self, name):
"""
Explicitally get a registered global action wheather it's enabled or
not. Raises KeyError for invalid names.
"""
return self._global_actions[name]
def actions(self):
"""
Get all the enabled actions as an iterable of (name, func).
"""
return self._actions.iteritems()
actions = property(actions)
def has_permission(self, request):
"""
Returns True if the given HttpRequest has permission to view
*at least one* page in the admin site.
"""
return request.user.is_active and request.user.is_staff
def check_dependencies(self):
"""
Check that all things needed to run the admin have been correctly installed.
The default implementation checks that LogEntry, ContentType and the
auth context processor are installed.
"""
from django.contrib.admin.models import LogEntry
from django.contrib.contenttypes.models import ContentType
if not LogEntry._meta.installed:
raise ImproperlyConfigured("Put 'django.contrib.admin' in your "
"INSTALLED_APPS setting in order to use the admin application.")
if not ContentType._meta.installed:
raise ImproperlyConfigured("Put 'django.contrib.contenttypes' in "
"your INSTALLED_APPS setting in order to use the admin application.")
if not ('django.contrib.auth.context_processors.auth' in settings.TEMPLATE_CONTEXT_PROCESSORS or
'django.core.context_processors.auth' in settings.TEMPLATE_CONTEXT_PROCESSORS):
raise ImproperlyConfigured("Put 'django.contrib.auth.context_processors.auth' "
"in your TEMPLATE_CONTEXT_PROCESSORS setting in order to use the admin application.")
def admin_view(self, view, cacheable=False):
"""
Decorator to create an admin view attached to this ``AdminSite``. This
wraps the view and provides permission checking by calling
``self.has_permission``.
You'll want to use this from within ``AdminSite.get_urls()``:
class MyAdminSite(AdminSite):
def get_urls(self):
from django.conf.urls.defaults import patterns, url
urls = super(MyAdminSite, self).get_urls()
urls += patterns('',
url(r'^my_view/$', self.admin_view(some_view))
)
return urls
By default, admin_views are marked non-cacheable using the
``never_cache`` decorator. If the view can be safely cached, set
cacheable=True.
"""
def inner(request, *args, **kwargs):
if not self.has_permission(request):
return self.login(request)
return view(request, *args, **kwargs)
if not cacheable:
inner = never_cache(inner)
# We add csrf_protect here so this function can be used as a utility
# function for any view, without having to repeat 'csrf_protect'.
if not getattr(view, 'csrf_exempt', False):
inner = csrf_protect(inner)
return update_wrapper(inner, view)
def get_urls(self):
from django.conf.urls.defaults import patterns,url,include
if settings.DEBUG:
self.check_dependencies()
def wrap(view, cacheable=False):
def wrapper(*args, **kwargs):
return self.admin_view(view, cacheable)(*args, **kwargs)
return update_wrapper(wrapper, view)
# Admin-site-wide views.
urlpatterns = patterns('',
url(r'^$',
wrap(self.index),
name='index'),
url(r'^logout/$',
wrap(self.logout),
name='logout'),
url(r'^password_change/$',
wrap(self.password_change, cacheable=True),
name='password_change'),
url(r'^password_change/done/$',
wrap(self.password_change_done, cacheable=True),
name='password_change_done'),
url(r'^jsi18n/$',
wrap(self.i18n_javascript, cacheable=True),
name='jsi18n'),
url(r'^r/(?P<content_type_id>\d+)/(?P<object_id>.+)/$',
'django.views.defaults.shortcut'),
url(r'^(?P<app_label>\w+)/$',
wrap(self.app_index),
name='app_list')
)
# Add in each model's views.
for model, model_admin in self._registry.iteritems():
urlpatterns += patterns('',
url(r'^%s/%s/' % (model._meta.app_label, model._meta.module_name),
include(model_admin.urls))
)
return urlpatterns
def urls(self):
return self.get_urls(), self.app_name, self.name
urls = property(urls)
def password_change(self, request):
"""
Handles the "change password" task -- both form display and validation.
"""
from django.contrib.auth.views import password_change
if self.root_path is not None:
url = '%spassword_change/done/' % self.root_path
else:
url = reverse('admin:password_change_done', current_app=self.name)
defaults = {
'post_change_redirect': url
}
if self.password_change_template is not None:
defaults['template_name'] = self.password_change_template
return password_change(request, **defaults)
def password_change_done(self, request):
"""
Displays the "success" page after a password change.
"""
from django.contrib.auth.views import password_change_done
defaults = {}
if self.password_change_done_template is not None:
defaults['template_name'] = self.password_change_done_template
return password_change_done(request, **defaults)
def i18n_javascript(self, request):
"""
Displays the i18n JavaScript that the Django admin requires.
This takes into account the USE_I18N setting. If it's set to False, the
generated JavaScript will be leaner and faster.
"""
if settings.USE_I18N:
from django.views.i18n import javascript_catalog
else:
from django.views.i18n import null_javascript_catalog
return javascript_catalog(request, packages='django.conf')
def logout(self, request):
"""
Logs out the user for the given HttpRequest.
This should *not* assume the user is already logged in.
"""
from django.contrib.auth.views import logout
defaults = {}
if self.logout_template is not None:
defaults['template_name'] = self.logout_template
return logout(request, **defaults)
logout = never_cache(logout)
def login(self, request):
"""
Displays the login form for the given HttpRequest.
"""
from django.contrib.auth.models import User
# If this isn't already the login page, display it.
if not request.POST.has_key(LOGIN_FORM_KEY):
if request.POST:
message = _("Please log in again, because your session has expired.")
else:
message = ""
return self.display_login_form(request, message)
# Check that the user accepts cookies.
if not request.session.test_cookie_worked():
message = _("Looks like your browser isn't configured to accept cookies. Please enable cookies, reload this page, and try again.")
return self.display_login_form(request, message)
else:
request.session.delete_test_cookie()
# Check the password.
username = request.POST.get('username', None)
password = request.POST.get('password', None)
user = authenticate(username=username, password=password)
if user is None:
message = ERROR_MESSAGE
if username is not None and u'@' in username:
# Mistakenly entered e-mail address instead of username? Look it up.
try:
user = User.objects.get(email=username)
except (User.DoesNotExist, User.MultipleObjectsReturned):
message = _("Usernames cannot contain the '@' character.")
else:
if user.check_password(password):
message = _("Your e-mail address is not your username."
" Try '%s' instead.") % user.username
else:
message = _("Usernames cannot contain the '@' character.")
return self.display_login_form(request, message)
# The user data is correct; log in the user in and continue.
else:
if user.is_active and user.is_staff:
login(request, user)
return http.HttpResponseRedirect(request.get_full_path())
else:
return self.display_login_form(request, ERROR_MESSAGE)
login = never_cache(login)
def index(self, request, extra_context=None):
"""
Displays the main admin index page, which lists all of the installed
apps that have been registered in this site.
"""
app_dict = {}
user = request.user
for model, model_admin in self._registry.items():
app_label = model._meta.app_label
has_module_perms = user.has_module_perms(app_label)
if has_module_perms:
perms = model_admin.get_model_perms(request)
# Check whether user has any perm for this module.
# If so, add the module to the model_list.
if True in perms.values():
model_dict = {
'name': capfirst(model._meta.verbose_name_plural),
'admin_url': mark_safe('%s/%s/' % (app_label, model.__name__.lower())),
'perms': perms,
}
if app_label in app_dict:
app_dict[app_label]['models'].append(model_dict)
else:
app_dict[app_label] = {
'name': app_label.title(),
'app_url': app_label + '/',
'has_module_perms': has_module_perms,
'models': [model_dict],
}
# Sort the apps alphabetically.
app_list = app_dict.values()
app_list.sort(lambda x, y: cmp(x['name'], y['name']))
# Sort the models alphabetically within each app.
for app in app_list:
app['models'].sort(lambda x, y: cmp(x['name'], y['name']))
context = {
'title': _('Site administration'),
'app_list': app_list,
'root_path': self.root_path,
}
context.update(extra_context or {})
context_instance = template.RequestContext(request, current_app=self.name)
return render_to_response(self.index_template or 'admin/index.html', context,
context_instance=context_instance
)
index = never_cache(index)
def display_login_form(self, request, error_message='', extra_context=None):
request.session.set_test_cookie()
context = {
'title': _('Log in'),
'app_path': request.get_full_path(),
'error_message': error_message,
'root_path': self.root_path,
}
context.update(extra_context or {})
context_instance = template.RequestContext(request, current_app=self.name)
return render_to_response(self.login_template or 'admin/login.html', context,
context_instance=context_instance
)
def app_index(self, request, app_label, extra_context=None):
user = request.user
has_module_perms = user.has_module_perms(app_label)
app_dict = {}
for model, model_admin in self._registry.items():
if app_label == model._meta.app_label:
if has_module_perms:
perms = model_admin.get_model_perms(request)
# Check whether user has any perm for this module.
# If so, add the module to the model_list.
if True in perms.values():
model_dict = {
'name': capfirst(model._meta.verbose_name_plural),
'admin_url': '%s/' % model.__name__.lower(),
'perms': perms,
}
if app_dict:
app_dict['models'].append(model_dict),
else:
# First time around, now that we know there's
# something to display, add in the necessary meta
# information.
app_dict = {
'name': app_label.title(),
'app_url': '',
'has_module_perms': has_module_perms,
'models': [model_dict],
}
if not app_dict:
raise http.Http404('The requested admin page does not exist.')
# Sort the models alphabetically within each app.
app_dict['models'].sort(lambda x, y: cmp(x['name'], y['name']))
context = {
'title': _('%s administration') % capfirst(app_label),
'app_list': [app_dict],
'root_path': self.root_path,
}
context.update(extra_context or {})
context_instance = template.RequestContext(request, current_app=self.name)
return render_to_response(self.app_index_template or ('admin/%s/app_index.html' % app_label,
'admin/app_index.html'), context,
context_instance=context_instance
)
def root(self, request, url):
"""
DEPRECATED. This function is the old way of handling URL resolution, and
is deprecated in favor of real URL resolution -- see ``get_urls()``.
This function still exists for backwards-compatibility; it will be
removed in Django 1.3.
"""
import warnings
warnings.warn(
"AdminSite.root() is deprecated; use include(admin.site.urls) instead.",
DeprecationWarning
)
#
# Again, remember that the following only exists for
# backwards-compatibility. Any new URLs, changes to existing URLs, or
# whatever need to be done up in get_urls(), above!
#
if request.method == 'GET' and not request.path.endswith('/'):
return http.HttpResponseRedirect(request.path + '/')
if settings.DEBUG:
self.check_dependencies()
# Figure out the admin base URL path and stash it for later use
self.root_path = re.sub(re.escape(url) + '$', '', request.path)
url = url.rstrip('/') # Trim trailing slash, if it exists.
# The 'logout' view doesn't require that the person is logged in.
if url == 'logout':
return self.logout(request)
# Check permission to continue or display login form.
if not self.has_permission(request):
return self.login(request)
if url == '':
return self.index(request)
elif url == 'password_change':
return self.password_change(request)
elif url == 'password_change/done':
return self.password_change_done(request)
elif url == 'jsi18n':
return self.i18n_javascript(request)
# URLs starting with 'r/' are for the "View on site" links.
elif url.startswith('r/'):
from django.contrib.contenttypes.views import shortcut
return shortcut(request, *url.split('/')[1:])
else:
if '/' in url:
return self.model_page(request, *url.split('/', 2))
else:
return self.app_index(request, url)
raise http.Http404('The requested admin page does not exist.')
def model_page(self, request, app_label, model_name, rest_of_url=None):
"""
DEPRECATED. This is the old way of handling a model view on the admin
site; the new views should use get_urls(), above.
"""
from django.db import models
model = models.get_model(app_label, model_name)
if model is None:
raise http.Http404("App %r, model %r, not found." % (app_label, model_name))
try:
admin_obj = self._registry[model]
except KeyError:
raise http.Http404("This model exists but has not been registered with the admin site.")
return admin_obj(request, rest_of_url)
model_page = never_cache(model_page)
# This global object represents the default admin site, for the common case.
# You can instantiate AdminSite in your own code to create a custom admin site.
site = AdminSite()
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