Reference GeoDjango Model API Geometry Field Options

GeometryField.max_geom_collections New in Django 5.2.17. This option is forwarded to the form field generated for this model field, bounding how many geometry collections may be contained in submitted WKB/WKT inputs before raising ValueError.

Reference Settings Core Settings

Default: 100 The maximum number of files that may be received via POST in a multipart/form-data encoded request before a SuspiciousOperation (TooManyFiles) is raised. You can set this to None to disable the check.

Topic guide Working with forms HTML forms

GET and POST are the only HTTP methods to use when dealing with forms.

Topic guide Creating forms from models ModelForm

It is strongly recommended that you explicitly set all fields that should be edited in the form using the fields attribute.

FAQ FAQ: The admin

You’ve got several options. If you want to piggyback on top of an add/change form that Django automatically generates, you can attach arbitrary JavaScript modules to the page via the model’s class Admin js parameter.

How-to How to use Django’s CSRF protection Edge cases

There are cases when CsrfViewMiddleware.process_view may not have run before your view is run - 404 and 500 handlers, for example - but you still need the CSRF token in a form. Solution: use requires_csrf_token()

How-to How to create custom model fields Background theory

All of Django’s fields (and when we say fields in this document, we always mean model fields and not form fields) are subclasses of django.db.models.Field.

How-to How to create custom model fields Writing a field subclass

It’s used during model migrations to tell Django how to take an instance of your new field and reduce it to a serialized form - in particular, what arguments to pass to __init__() to recreate it.

How-to How to create custom template tags and filters Writing custom template tags

django.template.Library.inclusion_tag() Another common type of template tag is the type that displays some data by rendering another template. For example, Django’s admin interface uses custom template tags to display the buttons along the bottom of the “add/change” form pages.

Django documentation

Django offers a robust internationalization and localization framework to assist you in the development of applications for multiple languages and world regions: Overview | Internationalization | Localization | Localized web UI formatting and form input Time zones

Internals

Django’s built-in components, such as the admin interface and default form rendering, should adhere to established accessibility standards and meet our own targets for supporting specific input devices and assistive technologies.

Internals Django Deprecation Timeline

The DjangoDivFormRenderer and Jinja2DivFormRenderer transitional form renderers will be removed. Support for passing positional arguments to BaseConstraint will be removed. request will be required in the signature of ModelAdmin.lookup_allowed() subclasses. The django.db.models.sql.datastructures.Join will no longer fallback to get_joining_columns().

Internals Django’s release process

Since version 1.0, Django’s release numbering works as follows: Versions are numbered in the form A.B or A.B.C. A.B is the feature release version number. Each version will be mostly backwards compatible with the previous release.

Tutorial

We’re continuing the web-poll application and will focus on form processing and cutting down our code. NOTE: If you’re having trouble going through this tutorial, please head over to > the Getting Help section of the FAQ.

Reference Class-based generic views - flattened index Editing views

classFormView Attributes (with optional accessor): content_type extra_context form_class [get_form_class()] http_method_names initial [get_initial()] prefix [get_prefix()] response_class [render_to_response()] success_url [get_success_url()] template_engine template_name [get_template_names()] Methods as_view() dispatch() form_invalid() form_valid() get() get_context_data() get_form() get_form_kwargs() http_method_not_allowed() post() put() setup()

Reference Editing mixins

classdjango.views.generic.edit.FormMixin : A mixin class that provides facilities for creating and displaying forms.

Reference The Django admin site ModelAdmin objectsModelAdmin options

Use the following options to override the default templates used by the ModelAdmin views: ModelAdmin.add_form_template : Path to a custom template, used by add_view(). ModelAdmin.change_form_template : Path to a custom template, used by change_view().

Reference The Django admin site Overriding admin templates

Not every template in contrib/admin/templates/admin may be overridden per app or per model. The following can: actions.html app_index.html change_form.html change_form_object_tools.html change_list.html change_list_object_tools.html change_list_results.html date_hierarchy.html delete_confirmation.html object_history.html pagination.html popup_response.html prepopulated_fields_js.html search_form.html submit_line.html For those templates that cannot be overridden in this …

Reference GEOS API Geometry ObjectsGEOSGeometry

This output may be in the form of a string, buffer, or even another object. GEOSGeometry.ewkt : Returns the “extended” Well-Known Text of the geometry. This representation is specific to PostGIS and is a superset of the OGC WKT standard.

Reference

Quite commonly in web applications, you need to display a one-time notification message (also known as “flash message”) to the user after processing a form or some other types of user input.