Catatan terbitan Django 5.1Link to this heading#

{% querystring %} template tagLink to this heading#

Django 5.1 introduces the {% querystring %} template tag, simplifying the modification of query parameters in URLs, making it easier to generate links that maintain existing query parameters while adding or changing specific ones.

For instance, navigating pagination and query strings in templates can be cumbersome. Consider this template fragment that dynamically generates a URL for navigating to the next page within a paginated view:

{# Linebreaks added for readability, this should be one, long line. #}
<a href="?{% for key, values in request.GET.iterlists %}
  {% if key != "page" %}
    {% for value in values %}
      {{ key }}={{ value }}&amp;
    {% endfor %}
  {% endif %}
{% endfor %}page={{ page.next_page_number }}">Next page</a>

When switching to using this new template tag, the above magically becomes:

<a href="{% querystring page=page.next_page_number %}">Next page</a>

PostgreSQL Connection PoolsLink to this heading#

Django 5.1 also introduces connection pool support for PostgreSQL. As the time to establish a new connection can be relatively long, keeping connections open can reduce latency.

To use a connection pool with psycopg, you can set the "pool" option inside OPTIONS to be a dict to be passed to ConnectionPool, or to True to use the ConnectionPool defaults:

DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.postgresql",
        # ...
        "OPTIONS": {
            "pool": {
                "min_size": 2,
                "max_size": 4,
                "timeout": 10,
            }
        },
    },
}

Middleware to require authentication by defaultLink to this heading#

The new LoginRequiredMiddleware redirects all unauthenticated requests to a login page. Views can allow unauthenticated requests by using the new login_not_required() decorator.

LoginRequiredMiddleware respects the login_url and redirect_field_name values set via the login_required() decorator, but does not support setting login_url or redirect_field_name via the LoginRequiredMixin.

To enable this, add "django.contrib.auth.middleware.LoginRequiredMiddleware" to your MIDDLEWARE setting.

Fitur kecilLink to this heading#

django.contrib.gisLink to this heading#

• Support for PostGIS 2.5 is removed.

• Support for PROJ < 6 is removed.

• Support for GDAL 2.4 is removed.

• GeoIP2 no longer opens both city and country databases when a directory path is provided, preferring the city database, if it is available. The country database is a subset of the city database and both are not typically needed. If you require use of the country database when in the same directory as the city database, explicitly pass the country database path to the constructor.

Dropped support for MariaDB 10.4Link to this heading#

Upstream support for MariaDB 10.4 ends in June 2024. Django 5.1 supports MariaDB 10.5 and higher.

Dropped support for PostgreSQL 12Link to this heading#

Upstream support for PostgreSQL 12 ends in November 2024. Django 5.1 supports PostgreSQL 13 and higher.

Bermacam-macamLink to this heading#

• In order to improve accessibility, the admin's changelist filter is now rendered in a <nav> tag instead of a <div>.

• In order to improve accessibility, the admin's footer is now rendered in a <footer> tag instead of a <div>, and also moved below the <div id="main"> element.

• In order to improve accessibility, the expandable widget used for ModelAdmin.fieldsets and InlineModelAdmin.fieldsets, when the fieldset has a name and use the collapse class, now includes <details> and <summary> elements.

• The JavaScript file collapse.js is removed since it is no longer needed in the Django admin site.

• SimpleTestCase.assertURLEqual() and assertInHTML() now add ": " to the msg_prefix. This is consistent with the behavior of other assertions.

• django.utils.text.Truncator used by truncatechars_html and truncatewords_html template filters now uses html.parser.HTMLParser subclasses. This results in a more robust and faster operation, but there may be small differences in the output.

• The undocumented django.urls.converters.get_converter() function is removed.

• The minimum supported version of SQLite is increased from 3.27.0 to 3.31.0.

• FileField now raises a FieldError when saving a file without a name.

• ImageField.update_dimension_fields(force=True) is no longer called after saving the image to storage. If your storage backend resizes images, the width_field and height_field will not match the width and height of the image.

• The minimum supported version of asgiref is increased from 3.7.0 to 3.8.1.

• To improve performance, the delete_selected admin action now uses QuerySet.bulk_create() when creating multiple LogEntry objects. As a result, pre_save and post_save signals for LogEntry are not sent when multiple objects are deleted via this admin action.

Bermacam-macamLink to this heading#

• The ModelAdmin.log_deletion() and LogEntryManager.log_action() methods are deprecated. Subclasses should implement ModelAdmin.log_deletions() and LogEntryManager.log_actions() instead.

• The undocumented django.utils.itercompat.is_iterable() function and the django.utils.itercompat module are deprecated. Use isinstance(..., collections.abc.Iterable) instead.

• The django.contrib.gis.geoip2.GeoIP2.coords() method is deprecated. Use django.contrib.gis.geoip2.GeoIP2.lon_lat() instead.

• The django.contrib.gis.geoip2.GeoIP2.open() method is deprecated. Use the GeoIP2 constructor instead.

• Passing positional arguments to Model.save() and Model.asave() is deprecated in favor of keyword-only arguments.

• Setting django.contrib.gis.gdal.OGRGeometry.coord_dim is deprecated. Use set_3d() instead.

• Overriding existing converters with django.urls.register_converter() is deprecated.

• The check keyword argument of CheckConstraint is deprecated in favor of condition.

• The undocumented OS_OPEN_FLAGS property of FileSystemStorage is deprecated. To allow overwriting files in storage, set the new allow_overwrite option to True instead.

• The get_cache_name() method of FieldCacheMixin is deprecated in favor of the cache_name cached property.