Page.next_page_number() [source] Returns the next page number. Raises InvalidPage if next page doesn’t exist.

CASCADE [source] Cascade deletes. Django emulates the behavior of the SQL constraint ON DELETE CASCADE and also deletes the object containing the ForeignKey.

This document describes how to make use of external authentication sources (where the Web server sets the REMOTE_USER environment variable) in your Django applications. This type of authentication solution is typically seen on intranet sites, with single sign-on solutions such as IIS and Integrated Windows Authentication or Apache and mod_authnz_ldap, CAS, Cosign, WebAuth, mod_auth_sspi, etc. When the Web server takes care of authentication it typically sets the REMOTE_USER environment variable

The topic guide on Django’s database-abstraction API described the way that you can use Django queries that create, retrieve, update and delete individual objects. However, sometimes you will need to retrieve values that are derived by summarizing or aggregating a collection of objects. This topic guide describes the ways that aggregate values can be generated and returned using Django queries. Throughout this guide, we’ll refer to the following models. These models are used to track the invent

GEOSGeometry.interpolate(distance)

gettext_noop(message) [source]

class Field [source] Field is an abstract class that represents a database table column. Django uses fields to create the database table (db_type()), to map Python types to database (get_prep_value()) and vice-versa (from_db_value()). A field is thus a fundamental piece in different Django APIs, notably, models and querysets. In models, a field is instantiated as a class attribute and represents a particular table column, see Models. It has attributes such as null and unique, and methods tha

A view is a callable which takes a request and returns a response. This can be more than just a function, and Django provides an example of some classes which can be used as views. These allow you to structure your views and reuse code by harnessing inheritance and mixins. There are also some generic views for simple tasks which we’ll get to later, but you may want to design your own structure of reusable views which suits your use case. For full details, see the class-based views reference doc

as_string() Returns the value of the field as a string: >>> city['Name'].as_string() 'Pueblo'

This document describes Django’s file access APIs for files such as those uploaded by a user. The lower level APIs are general enough that you could use them for other purposes. If you want to handle “static files” (JS, CSS, etc.), see Managing static files (e.g. images, JavaScript, CSS). By default, Django stores files locally, using the MEDIA_ROOT and MEDIA_URL settings. The examples below assume that you’re using these defaults. However, Django provides ways to write custom file storage syst