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=======================
Geolocation with GeoIP2
=======================
.. module:: django.contrib.gis.geoip2
:synopsis: Python interface for MaxMind's GeoIP2 databases.
The :class:`GeoIP2` object is a wrapper for the `MaxMind geoip2 Python
library`__. [#]_
In order to perform IP-based geolocation, the :class:`GeoIP2` object requires
the `geoip2 Python library`__ and the GeoIP ``Country`` and/or ``City``
datasets in binary format (the CSV files will not work!), downloaded from e.g.
`MaxMind`__ or `DB-IP`__ websites. Grab the ``GeoLite2-Country.mmdb.gz`` and
``GeoLite2-City.mmdb.gz`` files and unzip them in a directory corresponding to
the :setting:`GEOIP_PATH` setting.
Additionally, it is recommended to install the `libmaxminddb C library`__, so
that ``geoip2`` can leverage the C library's faster speed.
__ https://geoip2.readthedocs.io/
__ https://pypi.org/project/geoip2/
__ https://dev.maxmind.com/geoip/geolite2-free-geolocation-data
__ https://db-ip.com/db/lite.php
__ https://github.com/maxmind/libmaxminddb/
.. versionchanged:: 4.2
Support for ``.mmdb`` files downloaded from DB-IP was added.
Example
=======
Here is an example of its usage:
.. code-block:: pycon
>>> from django.contrib.gis.geoip2 import GeoIP2
>>> g = GeoIP2()
>>> g.country("google.com")
{'country_code': 'US', 'country_name': 'United States'}
>>> g.city("72.14.207.99")
{'city': 'Mountain View',
'continent_code': 'NA',
'continent_name': 'North America',
'country_code': 'US',
'country_name': 'United States',
'dma_code': 807,
'is_in_european_union': False,
'latitude': 37.419200897216797,
'longitude': -122.05740356445312,
'postal_code': '94043',
'region': 'CA',
'time_zone': 'America/Los_Angeles'}
>>> g.lat_lon("salon.com")
(39.0437, -77.4875)
>>> g.lon_lat("uh.edu")
(-95.4342, 29.834)
>>> g.geos("24.124.1.80").wkt
'POINT (-97 38)'
API Reference
=============
.. class:: GeoIP2(path=None, cache=0, country=None, city=None)
The ``GeoIP`` object does not require any parameters to use the default
settings. However, at the very least the :setting:`GEOIP_PATH` setting
should be set with the path of the location of your GeoIP datasets. The
following initialization keywords may be used to customize any of the
defaults.
=================== =======================================================
Keyword Arguments Description
=================== =======================================================
``path`` Base directory to where GeoIP data is located or the
full path to where the city or country data files
(``.mmdb``) are located. Assumes that both the city and
country datasets are located in this directory;
overrides the :setting:`GEOIP_PATH` setting.
``cache`` The cache settings when opening up the GeoIP datasets. May
be an integer in (0, 1, 2, 4, 8) corresponding to the
``MODE_AUTO``, ``MODE_MMAP_EXT``, ``MODE_MMAP``, and
``GEOIP_INDEX_CACHE`` ``MODE_MEMORY`` C API settings,
respectively. Defaults to 0 (``MODE_AUTO``).
``country`` The name of the GeoIP country data file. Defaults
to ``GeoLite2-Country.mmdb``. Setting this keyword
overrides the :setting:`GEOIP_COUNTRY` setting.
``city`` The name of the GeoIP city data file. Defaults to
``GeoLite2-City.mmdb``. Setting this keyword overrides
the :setting:`GEOIP_CITY` setting.
=================== =======================================================
Methods
=======
Instantiating
-------------
.. classmethod:: GeoIP2.open(path, cache)
This classmethod instantiates the GeoIP object from the given database path
and given cache setting.
Querying
--------
All the following querying routines may take either a string IP address
or a fully qualified domain name (FQDN). For example, both
``'205.186.163.125'`` and ``'djangoproject.com'`` would be valid query
parameters.
.. method:: GeoIP2.city(query)
Returns a dictionary of city information for the given query. Some
of the values in the dictionary may be undefined (``None``).
.. method:: GeoIP2.country(query)
Returns a dictionary with the country code and country for the given
query.
.. method:: GeoIP2.country_code(query)
Returns the country code corresponding to the query.
.. method:: GeoIP2.country_name(query)
Returns the country name corresponding to the query.
Coordinate Retrieval
--------------------
.. method:: GeoIP2.coords(query)
Returns a coordinate tuple of (longitude, latitude).
.. method:: GeoIP2.lon_lat(query)
Returns a coordinate tuple of (longitude, latitude).
.. method:: GeoIP2.lat_lon(query)
Returns a coordinate tuple of (latitude, longitude),
.. method:: GeoIP2.geos(query)
Returns a :class:`~django.contrib.gis.geos.Point` object corresponding to the
query.
Settings
========
.. setting:: GEOIP_PATH
``GEOIP_PATH``
--------------
A string or :class:`pathlib.Path` specifying the directory where the GeoIP data
files are located. This setting is *required* unless manually specified
with ``path`` keyword when initializing the :class:`GeoIP2` object.
.. setting:: GEOIP_COUNTRY
``GEOIP_COUNTRY``
-----------------
The basename to use for the GeoIP country data file. Defaults to
``'GeoLite2-Country.mmdb'``.
.. setting:: GEOIP_CITY
``GEOIP_CITY``
--------------
The basename to use for the GeoIP city data file. Defaults to
``'GeoLite2-City.mmdb'``.
Exceptions
==========
.. exception:: GeoIP2Exception
The exception raised when an error occurs in a call to the underlying
``geoip2`` library.
.. rubric:: Footnotes
.. [#] GeoIP(R) is a registered trademark of MaxMind, Inc.
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