Reference The Django admin site ModelAdmin objectsModelAdmin asset definitions

Also, your own admin forms or widgets depending on django.jQuery must specify js=['admin/js/jquery.init.js', …] when declaring form media assets.

Reference The Django admin site Overriding admin templates

After looking at change_form.html we determine that we only need to override the object-tools-items block. Therefore here is our new change_form.html : And that’s it!

Reference GeoDjango Database API Spatial Lookups

… right hand side, a tuple of the raster and band index can be specified. This results in the following general form for lookups involving rasters (assuming the Elevation model used in the GeoDjango Model API): For example: On the left …

Reference GDAL API Vector Data Source Objects

classField : name

Reference GDAL API OGR Geometries

classOGRGeomType(type_input)[source] : This class allows for the representation of an OGR geometry type in any of several ways:

Reference GIS QuerySet API Reference Spatial Lookups

This lookup requires a tuple parameter, (geom, pattern); the form of pattern will depend on the spatial backend:

Reference GIS QuerySet API Reference

Availability: PostGIS, Oracle, MariaDB, MySQL, SpatiaLite, PGRaster (Native) For an overview on performing distance queries, please refer to the distance queries introduction.

Reference

… Data Geographic Models Importing Spatial Data Spatial Queries Putting your data on the map GeoDjango Installation Overview Requirements Installation Troubleshooting Platform-specific instructions GeoDjango Model API Spatial Field Types Spatial Field Options Geometry Field Options GeoDjango Database API Spatial Backends Creating …

Reference GeoDjango Tutorial Spatial Queries

When doing spatial queries, GeoDjango automatically transforms geometries if they’re in a different coordinate system.

Reference PostgreSQL specific model fields Range Fields

classIntegerRangeField(**options) : Stores a range of integers. Based on an IntegerField. Represented by an int4range in the database and a django.db.backends.postgresql.psycopg_any.NumericRange in Python.

Reference PostgreSQL specific model fields Range Fields

classBigIntegerRangeField(**options) : Stores a range of large integers. Based on a BigIntegerField. Represented by an int8range in the database and a django.db.backends.postgresql.psycopg_any.NumericRange in Python.

Reference PostgreSQL specific model fields Range Fields

classDateRangeField(**options) : Stores a range of dates. Based on a DateField. Represented by a daterange in the database and a django.db.backends.postgresql.psycopg_any.DateRange in Python.

Reference django-admin and manage.py Available commands

--format FORMAT Specifies the serialization format (e.g., json or xml) for fixtures read from stdin. --exclude EXCLUDE, -e EXCLUDE Excludes loading the fixtures from the given applications and/or models (in the form of app_label or app_label.ModelName).

Reference The Forms API More granular output

Returns None if aria-describedby is set in Widget.attrs to preserve the user defined attribute when rendering the form. BoundField.auto_id[source] : The HTML ID attribute for this BoundField. Returns an empty string if Form.auto_id is False.

Reference The Forms API More granular output

BoundField.initial[source] : Use BoundField.initial to retrieve initial data for a form field. It retrieves the data from Form.initial if present, otherwise trying Field.initial. Callable values are evaluated. See Initial form values for more examples.

Reference Widgets

In the following example, the years attribute is set for a SelectDateWidget: See the Built-in widgets for more information about which widgets are available and which arguments they accept.

Reference Widgets Customizing widget instances

In a nutshell, you will need to subclass the widget and either define a “Media” inner class or create a “media” property. These methods involve somewhat advanced Python programming and are described in detail in the Form Assets topic guide.

Reference Widgets Built-in widgetsSelector and checkbox widgets

classSelect[source] : - template_name: 'django/forms/widgets/select.html' - option_template_name: 'django/forms/widgets/select_option.html' - Renders as: <select><option ...>...</select>

Reference Widgets Built-in widgetsSelector and checkbox widgets

classRadioSelect[source] : - template_name: 'django/forms/widgets/radio.html' - option_template_name: 'django/forms/widgets/radio_option.html'

Reference

There are a number of built-in expressions (documented below) that can be used to help you write queries. Expressions can be combined, or in some cases nested, to form more complex computations.