Index

… - value_omitted_from_data() (Widget method) - value_to_string() (Field method) - ValueRange (class in django.db.models.expressions) - values() (backends.base.SessionBase method) - (in module django.db.models.query.QuerySet) - (QueryDict method) | - values_list() (in module django.db.models.query.QuerySet) - Variance (class in django.db.models) - vary_on_cookie() (in module django.views.decorators.vary) …

queryset : An object representing some set of rows to be fetched from the database. slug : A short label for something, containing only letters, numbers, underscores or hyphens. They’re generally used in URLs.

How-to How to create custom model fields Writing a field subclassUseful methods

The methods are also called when constructing a WHERE clause that includes the model field – that is, when you retrieve data using QuerySet methods like get(), filter(), and exclude() and have the model field as an argument.

Internals Django Deprecation Timeline

See the Django 1.5 release notes for more details on these changes. The module django.utils.simplejson will be removed. The standard library provides json which should be used instead. The function django.utils.itercompat.product will be removed.

Internals The Django source code repository Tags

queryset-refactor: A refactoring of the internals of Django’s object-relational mapper. This became part of Django as of the 1.0 release. unicode: A refactoring of Django’s internals to consistently use Unicode-based strings in most places within Django and Django applications.

Internals Django’s security policies Reporting security issuesReporting guidelines

Reports based on a failure to sanitize user input are not valid security vulnerabilities. It is the developer’s responsibility to properly handle user input. This principle is explained in our security documentation.

Reference Applications Initialization process

For example, a common mistake is making a database query to populate form field choices: In the example above, the query from Country.objects.all() is executed during module import, because the QuerySet is iterated over.

Reference Class-based generic views - flattened index Date-based views

… accessor): allow_empty [get_allow_empty()] allow_future [get_allow_future()] content_type context_object_name [get_context_object_name()] date_field [get_date_field()] extra_context http_method_names model ordering [get_ordering()] paginate_by [get_paginate_by()] paginate_orphans [get_paginate_orphans()] paginator_class queryset [get_queryset()] response_class [render_to_response()] template_engine template_name [get_template_names()] template_name_suffix Methods as_view() dispatch() get() get_context_data() get_date_list() get_dated_items() get_dated_queryset() get_paginator() head() http_method_not_allowed() paginate_queryset() …

Reference Class-based generic views - flattened index Date-based views

classYearArchiveView Attributes (with optional accessor): allow_empty [get_allow_empty()] allow_future [get_allow_future()] content_type context_object_name [get_context_object_name()] date_field [get_date_field()] extra_context http_method_names make_object_list [get_make_object_list()] model ordering [get_ordering()] paginate_by [get_paginate_by()] paginate_orphans [get_paginate_orphans()] paginator_class queryset [get_queryset()] response_class [render_to_response()] template_engine template_name [get_template_names()] template_name_suffix year [get_year()] year_format [get_year_format()] Methods

Reference Class-based generic views - flattened index Date-based views

… Attributes (with optional accessor): allow_empty [get_allow_empty()] allow_future [get_allow_future()] content_type context_object_name [get_context_object_name()] date_field [get_date_field()] extra_context http_method_names model month [get_month()] month_format [get_month_format()] ordering [get_ordering()] paginate_by [get_paginate_by()] paginate_orphans [get_paginate_orphans()] paginator_class queryset [get_queryset()] response_class [render_to_response()] template_engine template_name [get_template_names()] template_name_suffix year [get_year()] year_format [get_year_format()] Methods

Reference Class-based generic views - flattened index Date-based views

… Attributes (with optional accessor): allow_empty [get_allow_empty()] allow_future [get_allow_future()] content_type context_object_name [get_context_object_name()] date_field [get_date_field()] extra_context http_method_names model ordering [get_ordering()] paginate_by [get_paginate_by()] paginate_orphans [get_paginate_orphans()] paginator_class queryset [get_queryset()] response_class [render_to_response()] template_engine template_name [get_template_names()] template_name_suffix week [get_week()] week_format [get_week_format()] year [get_year()] year_format [get_year_format()] Methods

Reference Class-based generic views - flattened index Date-based views

… allow_empty [get_allow_empty()] allow_future [get_allow_future()] content_type context_object_name [get_context_object_name()] date_field [get_date_field()] day [get_day()] day_format [get_day_format()] extra_context http_method_names model month [get_month()] month_format [get_month_format()] ordering [get_ordering()] paginate_by [get_paginate_by()] paginate_orphans [get_paginate_orphans()] paginator_class queryset [get_queryset()] response_class [render_to_response()] template_engine template_name [get_template_names()] template_name_suffix year [get_year()] year_format [get_year_format()] Methods

Reference Class-based generic views - flattened index Date-based views

… allow_empty [get_allow_empty()] allow_future [get_allow_future()] content_type context_object_name [get_context_object_name()] date_field [get_date_field()] day [get_day()] day_format [get_day_format()] extra_context http_method_names model month [get_month()] month_format [get_month_format()] ordering [get_ordering()] paginate_by [get_paginate_by()] paginate_orphans [get_paginate_orphans()] paginator_class queryset [get_queryset()] response_class [render_to_response()] template_engine template_name [get_template_names()] template_name_suffix year [get_year()] year_format [get_year_format()] Methods

Reference Class-based generic views - flattened index Date-based views

… (with optional accessor): allow_future [get_allow_future()] content_type context_object_name [get_context_object_name()] date_field [get_date_field()] day [get_day()] day_format [get_day_format()] extra_context http_method_names model month [get_month()] month_format [get_month_format()] pk_url_kwarg query_pk_and_slug queryset [get_queryset()] response_class [render_to_response()] slug_field [get_slug_field()] slug_url_kwarg template_engine template_name [get_template_names()] template_name_field template_name_suffix year [get_year()] year_format [get_year_format()] Methods

Reference Generic date views

classWeekArchiveView[source] : A weekly archive page showing all objects in a given week. Objects with a date in the future are not displayed unless you set allow_future to True.

Reference Generic date views

classDayArchiveView[source] : A day archive page showing all objects in a given day. Days in the future throw a 404 error, regardless of whether any objects exist for future days, unless you set allow_future to True.

Reference Date-based mixins

classBaseDateListView[source] : A base class that provides common behavior for all date-based views. There won’t normally be a reason to instantiate BaseDateListView; instantiate one of the subclasses instead.

Reference Multiple object mixins

classdjango.views.generic.list.MultipleObjectMixin : A mixin that can be used to display a list of objects.

Reference The Django admin site ModelAdmin objects

The ModelAdmin is very flexible. It has several options for dealing with customizing the interface. All options are defined on the ModelAdmin subclass: ModelAdmin.actions : A list of actions to make available on the change list page.

Reference The Django admin site ModelAdmin objects

Call super().delete_model() to delete the object using Model.delete(). ModelAdmin.delete_queryset(request,queryset)[source] : The delete_queryset() method is given the HttpRequest and a QuerySet of objects to be deleted. Override this method to customize the deletion process for the “delete selected objects” action.