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ckanext-dgu - extension
This is an extension to CKAN that provides customisations specifically for the project:
* DGU's package form - includes a number of custom fields such as temporal_coverage and geographic_coverage.
* the Form API - exposes in the API the form expressed as HTML for insertion in the Drupal front-end.
* Harvest Source form, supplied by Form API to the Drupal front-end.
* Harvest Object inserted into the CKAN package view page.
* gov_daily - a script (for running daily) that save the database dumps for end-users (JSON/CSV) and backups (SQL).
* ons_loader - an import script for data from the Office of National Statistics.
* cospread - an import script for packages listed in a standardised spreadsheet format.
* various other command-line utilities
This is how to install ckanext-dgu, ckan and their dependencies into a python virtual environment::
virtualenv pyenv
pip -E pyenv install -e git+
pip -E pyenv install -e git+
pip -E pyenv install -r pyenv/src/ckan/pip-requirements.txt
pip -E pyenv install -r pyenv/src/ckanext-dgu/pip-requirements.txt
Different parts of the DGU extension require options to be set in the
CKAN configuration file (.ini) in the [app:main] section
To use the DGU form specify::
package_form = package_gov3
To enable the Form API::
ckan.plugins = dgu_form_api
For the Drupal RPC connection (for user data etc.) supply the hostname,
and credentials for HTTP Basic Authentication (if necessary)::
dgu.xmlrpc_domain =
dgu.xmlrpc_username = ckan
dgu.xmlrpc_password = letmein
There is a front-page added to CKAN which describes the Catalogue APIs. The usual CKAN front-page has been moved to /ckan/ .
There are a number of command-line scripts for processing data. To run one of these, you should activate the environment first. For example to load in some ONS data you might start like this::
. pyenv/bin/activate
ons_loader --help
To test the DGU extension you need the setup with CKAN (see above) and creation of a configured pyenv/src/ckan/development.ini (see ).
To run the tests::
cd {pyenv}/ckanext-dgu
nosetests --ckan ckanext/dgu/tests/
or run them from another directory by specifying the test.ini::
nosetests {pyenv}/src/ckanext-dgu/ckanext/dgu/tests/ --ckan --with-pylons={pyenv}/src/ckanext-dgu/test.ini {pyenv}/src/ckanext-dgu/ckanext/dgu/tests/
You can either run the 'quick and dirty' tests with SQLite or more comprehensively with PostgreSQL. Set ``--with-pylons`` to point to the relevant configuration - either ``test.ini`` or ``test-core.ini`` (both from the ckanext-dgu repo, not the ckan one). For more information, see .
Test issues
Address and Connection errors
* ``socket.error: [Errno 98] Address already in use``
* ``error: [Errno 111] Connection refused``
These errors usually means a previous run of the tests has not cleaned up the Mock Drupal process. You can verify that::
$ ps a | grep mock_drupal
4748 pts/8 S 0:00 /home/dread/hgroot/pyenv-dgu/bin/python /home/dread/hgroot/pyenv-dgu/bin/paster --plugin=ckanext-dgu mock_drupal run -q
Now kill it before running the tests again::
$ kill 4748
Config errors
* ``DrupalXmlRpcSetupError: Drupal XMLRPC not configured.``
The missing settings that result in this error are to be found in {pyenv}/src/ckanext-dgu/test-core.ini which is also imported into {pyenv}/src/ckanext-dgu/test.ini, so make sure you are specifying either of these config files in your nosetests ``--with-pylons`` parameter.
DGU is an extension for CKAN:
This README file is part of the DGU Developer Documentation, stored in the
ckanext-dgu repo at ``ckanext-dgu/doc``.
The Developer Docs can be built using `Sphinx <>`_::
python build_sphinx