setdefault()

class Q [source] A Q() object, like an F object, encapsulates a SQL expression in a Python object that can be used in database-related operations. In general, Q() objects make it possible to define and reuse conditions. This permits the construction of complex database queries using | (OR) and & (AND) operators; in particular, it is not otherwise possible to use OR in QuerySets.

QueryDict.__getitem__(key) Returns the value for the given key. If the key has more than one value, __getitem__() returns the last value. Raises django.utils.datastructures.MultiValueDictKeyError if the key does not exist. (This is a subclass of Python’s standard KeyError, so you can stick to catching KeyError.)

class apps.SimpleAdminConfig This class works like AdminConfig, except it doesn’t call autodiscover().

logout(request) [source] To log out a user who has been logged in via django.contrib.auth.login(), use django.contrib.auth.logout() within your view. It takes an HttpRequest object and has no return value. Example: from django.contrib.auth import logout def logout_view(request): logout(request) # Redirect to a success page. Note that logout() doesn’t throw any errors if the user wasn’t logged in. When you call logout(), the session data for the current request is completely cleaned

dispatch(request, *args, **kwargs) The view part of the view – the method that accepts a request argument plus arguments, and returns a HTTP response. The default implementation will inspect the HTTP method and attempt to delegate to a method that matches the HTTP method; a GET will be delegated to get(), a POST to post(), and so on. By default, a HEAD request will be delegated to get(). If you need to handle HEAD requests in a different way than GET, you can override the head() method. See

ModelAdmin.ordering Set ordering to specify how lists of objects should be ordered in the Django admin views. This should be a list or tuple in the same format as a model’s ordering parameter. If this isn’t provided, the Django admin will use the model’s default ordering. If you need to specify a dynamic order (for example depending on user or language) you can implement a get_ordering() method.

login(request, user, backend=None) [source] To log a user in, from a view, use login(). It takes an HttpRequest object and a User object. login() saves the user’s ID in the session, using Django’s session framework. Note that any data set during the anonymous session is retained in the session after a user logs in. This example shows how you might use both authenticate() and login(): from django.contrib.auth import authenticate, login def my_view(request): username = request.POST['usern

class AdminSite(name='admin') [source] A Django administrative site is represented by an instance of django.contrib.admin.sites.AdminSite; by default, an instance of this class is created as django.contrib.admin.site and you can register your models and ModelAdmin instances with it. When constructing an instance of an AdminSite, you can provide a unique instance name using the name argument to the constructor. This instance name is used to identify the instance, especially when reversing adm

Trigram similarity New in Django 1.10. The trigram_similar lookup allows you to perform trigram lookups, measuring the number of trigrams (three consecutive characters) shared, using a dedicated PostgreSQL extension. A trigram lookup is given an expression and returns results that have a similarity measurement greater than the current similarity threshold. To use it, add 'django.contrib.postgres' in your INSTALLED_APPS and activate the pg_trgm extension on PostgreSQL. You can install the exte