====================== GeoDjango Installation ====================== Overview ======== In general, GeoDjango installation requires: #. :ref:`Python and Django ` #. :ref:`spatial_database` #. :doc:`geolibs` Details for each of the requirements and installation instructions are provided in the sections below. In addition, platform-specific instructions are available for: * :ref:`macos` * :ref:`windows` .. admonition:: Use the Source Because GeoDjango takes advantage of the latest in the open source geospatial software technology, recent versions of the libraries are necessary. If binary packages aren't available for your platform, installation from source may be required. When compiling the libraries from source, please follow the directions closely, especially if you're a beginner. Requirements ============ .. _django: Python and Django ----------------- Because GeoDjango is included with Django, please refer to Django's :ref:`installation instructions ` for details on how to install. .. _spatial_database: Spatial database ---------------- PostgreSQL (with PostGIS), MySQL, Oracle, and SQLite (with SpatiaLite) are the spatial databases currently supported. .. note:: PostGIS is recommended, because it is the most mature and feature-rich open source spatial database. The geospatial libraries required for a GeoDjango installation depends on the spatial database used. The following lists the library requirements, supported versions, and any notes for each of the supported database backends: ================== ============================== ================== ========================================= Database Library Requirements Supported Versions Notes ================== ============================== ================== ========================================= PostgreSQL GEOS, GDAL, PROJ, PostGIS 14+ Requires PostGIS. MySQL GEOS, GDAL 8.0.11+ :ref:`Limited functionality `. Oracle GEOS, GDAL 19+ XE not supported. SQLite GEOS, GDAL, PROJ, SpatiaLite 3.31.0+ Requires SpatiaLite 4.3+ ================== ============================== ================== ========================================= See also `this comparison matrix`__ on the OSGeo Wiki for PostgreSQL/PostGIS/GEOS/GDAL possible combinations. __ https://trac.osgeo.org/postgis/wiki/UsersWikiPostgreSQLPostGIS Installation ============ Geospatial libraries -------------------- .. toctree:: :maxdepth: 1 geolibs Database installation --------------------- .. toctree:: :maxdepth: 1 postgis spatialite :setting:`DATABASES` configuration ---------------------------------- Set the :setting:`ENGINE ` setting to one of the :ref:`spatial backends `. Add ``django.contrib.gis`` to :setting:`INSTALLED_APPS` ------------------------------------------------------- Like other Django contrib applications, you will *only* need to add :mod:`django.contrib.gis` to :setting:`INSTALLED_APPS` in your settings. This is so that the ``gis`` templates can be located -- if not done, then features such as the geographic admin or KML sitemaps will not function properly. Troubleshooting =============== If you can't find the solution to your problem here then participate in the community! You can: * Ask your question on the `GeoDjango`__ forum. * File a ticket on the `Django trac`__ if you think there's a bug. Make sure to provide a complete description of the problem, versions used, and specify the component as "GIS". __ https://forum.djangoproject.com/c/internals/geodjango/13 __ https://code.djangoproject.com/newticket .. _libsettings: Library environment settings ---------------------------- By far, the most common problem when installing GeoDjango is that the external shared libraries (e.g., for GEOS and GDAL) cannot be located. [#]_ Typically, the cause of this problem is that the operating system isn't aware of the directory where the libraries built from source were installed. In general, the library path may be set on a per-user basis by setting an environment variable, or by configuring the library path for the entire system. ``LD_LIBRARY_PATH`` environment variable ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ A user may set this environment variable to customize the library paths they want to use. The typical library directory for software built from source is ``/usr/local/lib``. Thus, ``/usr/local/lib`` needs to be included in the ``LD_LIBRARY_PATH`` variable. For example, the user could place the following in their bash profile: .. code-block:: shell export LD_LIBRARY_PATH=/usr/local/lib Setting system library path ~~~~~~~~~~~~~~~~~~~~~~~~~~~ On GNU/Linux systems, there is typically a file in ``/etc/ld.so.conf``, which may include additional paths from files in another directory, such as ``/etc/ld.so.conf.d``. As the root user, add the custom library path (like ``/usr/local/lib``) on a new line in ``ld.so.conf``. This is *one* example of how to do so: .. code-block:: shell $ sudo echo /usr/local/lib >> /etc/ld.so.conf $ sudo ldconfig For OpenSolaris users, the system library path may be modified using the ``crle`` utility. Run ``crle`` with no options to see the current configuration and use ``crle -l`` to set with the new library path. Be *very* careful when modifying the system library path: .. code-block:: shell # crle -l $OLD_PATH:/usr/local/lib .. _binutils: Install ``binutils`` ~~~~~~~~~~~~~~~~~~~~ GeoDjango uses the ``find_library`` function (from the ``ctypes.util`` Python module) to discover libraries. The ``find_library`` routine uses a program called ``objdump`` (part of the ``binutils`` package) to verify a shared library on GNU/Linux systems. Thus, if ``binutils`` is not installed on your Linux system then Python's ctypes may not be able to find your library even if your library path is set correctly and geospatial libraries were built perfectly. The ``binutils`` package may be installed on Debian and Ubuntu systems using the following command: .. code-block:: shell $ sudo apt-get install binutils Similarly, on Red Hat and CentOS systems: .. code-block:: shell $ sudo yum install binutils Platform-specific instructions ============================== .. _macos: macOS ----- Because of the variety of packaging systems available for macOS, users have several different options for installing GeoDjango. These options are: * :ref:`postgresapp` (easiest and recommended) * :ref:`homebrew` * :ref:`fink` * :ref:`macports` * :ref:`build_from_source` This section also includes instructions for installing an upgraded version of :ref:`macos_python` from packages provided by the Python Software Foundation, however, this is not required. .. _macos_python: Python ~~~~~~ Although macOS comes with Python installed, users can use `framework installers`__ provided by the Python Software Foundation. An advantage to using the installer is that macOS's Python will remain "pristine" for internal operating system use. __ https://www.python.org/ftp/python/ .. note:: You will need to modify the ``PATH`` environment variable in your ``.profile`` file so that the new version of Python is used when ``python`` is entered at the command-line: .. code-block:: shell export PATH=/Library/Frameworks/Python.framework/Versions/Current/bin:$PATH .. _postgresapp: Postgres.app ~~~~~~~~~~~~ `Postgres.app `_ is a standalone PostgreSQL server that includes the PostGIS extension. You will also need to install ``gdal`` and ``libgeoip`` with :ref:`homebrew`. After installing Postgres.app, add the following to your ``.bash_profile`` so you can run the package's programs from the command-line. Replace ``X.Y`` with the version of PostgreSQL in the Postgres.app you installed: .. code-block:: bash export PATH=$PATH:/Applications/Postgres.app/Contents/Versions/X.Y/bin You can check if the path is set up correctly by typing ``which psql`` at a terminal prompt. .. _homebrew: Homebrew ~~~~~~~~ `Homebrew`__ provides "recipes" for building binaries and packages from source. It provides recipes for the GeoDjango prerequisites on Macintosh computers running macOS. Because Homebrew still builds the software from source, `Xcode`_ is required. Summary: .. code-block:: shell $ brew install postgresql $ brew install postgis $ brew install gdal $ brew install libgeoip __ https://brew.sh/ .. _Xcode: https://developer.apple.com/xcode/ .. _fink: Fink ^^^^ `Kurt Schwehr`__ has been gracious enough to create GeoDjango packages for users of the `Fink`__ package system. `Different packages are available`__ (starting with ``django-gis``), depending on which version of Python you want to use. __ https://schwehr.blogspot.com/ __ https://www.finkproject.org/ __ https://pdb.finkproject.org/pdb/browse.php?summary=django-gis .. _macports: MacPorts ~~~~~~~~ `MacPorts`__ may be used to install GeoDjango prerequisites on computers running macOS. Because MacPorts still builds the software from source, `Xcode`_ is required. Summary: .. code-block:: shell $ sudo port install postgresql14-server $ sudo port install geos $ sudo port install proj6 $ sudo port install postgis3 $ sudo port install gdal $ sudo port install libgeoip .. note:: You will also have to modify the ``PATH`` in your ``.profile`` so that the MacPorts programs are accessible from the command-line: .. code-block:: shell export PATH=/opt/local/bin:/opt/local/lib/postgresql14/bin In addition, add the ``DYLD_FALLBACK_LIBRARY_PATH`` setting so that the libraries can be found by Python: .. code-block:: shell export DYLD_FALLBACK_LIBRARY_PATH=/opt/local/lib:/opt/local/lib/postgresql14 __ https://www.macports.org/ .. _windows: Windows ------- Proceed through the following sections sequentially in order to install GeoDjango on Windows. In this tutorial we will install 64 bit versions of each application. Python ~~~~~~ Install a 64 bit version of Python. See :doc:`Install Python ` for further information. PostgreSQL ~~~~~~~~~~ Download the latest `PostgreSQL 15.x installer`__ from the `EnterpriseDB`__ website. After downloading, run the installer, follow the on-screen directions, and keep the default options unless you know the consequences of changing them. .. note:: The PostgreSQL installer creates a new ``postgres`` database superuser You will be prompted once to set the password -- make sure to remember it! When the installer completes, it will ask to "Launch Stack Builder at exit?" -- keep this checked, as it is necessary to install :ref:`postgisasb`. .. note:: If installed successfully, the PostgreSQL server will run in the background each time the system as started as a Windows service. A :menuselection:`PostgreSQL 15` start menu group will created and contains shortcuts for the Application Stack Builder (ASB) as well as the 'SQL Shell', which will launch a ``psql`` command window. __ https://www.enterprisedb.com/downloads/postgres-postgresql-downloads __ https://www.enterprisedb.com .. _postgisasb: PostGIS ~~~~~~~ From within the Stack Builder (to run outside of the installer, :menuselection:`Start --> PostgreSQL 15 --> Application Stack Builder`), select :menuselection:`PostgreSQL 15 (x64) on port 5432` from the drop down menu and click next. Expand the :menuselection:`Categories --> Spatial Extensions` menu tree and select :menuselection:`PostGIS X.Y for PostgreSQL 15`. After clicking next, you will be prompted to confirm the selected package and "Download directory". Click next again, this will download PostGIS and you will be asked to click next to begin the PostGIS installer. Select the default options during install. The install process includes four Yes/No dialog boxes, the default option for all four is "No". .. _osgeo4w: OSGeo4W ~~~~~~~ The `OSGeo4W installer`_ helps to install the PROJ, GDAL, and GEOS libraries required by GeoDjango. First, download the `OSGeo4W installer`_, and run it. Select :menuselection:`Express Web-GIS Install` and click next. In the 'Select Packages' list, ensure that GDAL is selected. If any other packages are enabled by default, they are not required by GeoDjango and may be unchecked safely. After clicking next and accepting the license agreements, the packages will be automatically downloaded and installed, after which you may exit the installer. .. _OSGeo4W installer: https://trac.osgeo.org/osgeo4w/ Modify Windows environment ~~~~~~~~~~~~~~~~~~~~~~~~~~ In order to use GeoDjango, you will need to add your OSGeo4W directories to your Windows system ``Path``, as well as create ``GDAL_DATA`` and ``PROJ_LIB`` environment variables. The following set of commands, executable with ``cmd.exe``, will set this up. Restart your device once this is complete for new environment variables to be recognized: .. code-block:: bat set OSGEO4W_ROOT=C:\OSGeo4W set GDAL_DATA=%OSGEO4W_ROOT%\apps\gdal\share\gdal set PROJ_LIB=%OSGEO4W_ROOT%\share\proj set PATH=%PATH%;%OSGEO4W_ROOT%\bin reg ADD "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v Path /t REG_EXPAND_SZ /f /d "%PATH%" reg ADD "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v GDAL_DATA /t REG_EXPAND_SZ /f /d "%GDAL_DATA%" reg ADD "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v PROJ_LIB /t REG_EXPAND_SZ /f /d "%PROJ_LIB%" .. note:: Administrator privileges are required to execute these commands. To do this, run command prompt as administrator and enter the commands above. You need to log out and log back in again for the settings to take effect. .. note:: If you customized the OSGeo4W installation directories, then you will need to modify the ``OSGEO4W_ROOT`` variables accordingly. Install Django and set up database ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ :ref:`Install Django ` on your system. It is recommended that you create a :doc:`virtual environment ` for each project you create. psycopg ~~~~~~~ The ``psycopg`` Python module provides the interface between Python and the PostgreSQL database. ``psycopg`` can be installed via pip within your Python virtual environment: .. code-block:: doscon ...\> py -m pip install psycopg .. rubric:: Footnotes .. [#] GeoDjango uses the :func:`~ctypes.util.find_library` routine from ``ctypes.util`` to locate shared libraries.