CKAN extension to showcase datasets in use
by CKAN

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target https://coveralls.io/r/ckan/ckanext-showcase

ckanext-showcase

Showcase and link to datasets in use. Datasets used in an app, website or visualization, or featured in an article, report or blog post can be showcased within the CKAN website. Showcases can include an image, description, tags and external link. Showcases may contain several datasets, helping users discover related datasets being used together. Showcases can be discovered by searching and filtered by tag.

Site sysadmins can promote selected users to become ‘Showcase Admins’ to help create, populate and maintain showcases.

ckanext-showcase is intended to be a more powerful replacement for the ‘Related Item’ feature.

Requirements

Compatible with CKAN 2.3+.

N.B. The migrate command, detailed below, requires the Related Item models and actions, which have been removed in CKAN 2.6. If you wish to migrate your Related Items, please first upgrade CKAN to 2.5, do the migration, then continue upgrading to CKAN 2.6+.

Installation

To install ckanext-showcase:

  1. Activate your CKAN virtual environment, for example:

    . /usr/lib/ckan/default/bin/activate
    
  2. Install the ckanext-showcase Python package into your virtual environment:

    pip install ckanext-showcase
    
  3. Add showcase to the ckan.plugins setting in your CKAN config file (by default the config file is located at /etc/ckan/default/production.ini).
  4. Restart CKAN. For example if you’ve deployed CKAN with Apache on Ubuntu:

    sudo service apache2 reload
    

Development Installation

To install ckanext-showcase for development, activate your CKAN virtualenv and do:

git clone https://github.com/ckan/ckanext-showcase.git
cd ckanext-showcase
python setup.py develop
pip install -r dev-requirements.txt

API

All actions in the Showcase extension are available in the CKAN Action API.

Showcase actions:

- create a new showcase (sysadmins and showcase admins only)
curl -X POST http://127.0.0.1:5000/api/3/action/ckanext_showcase_create -H "Authorization:{YOUR-API-KEY}" -d '{"name": "my-new-showcase"}'

- delete a showcase (sysadmins and showcase admins only)
curl -X POST http://127.0.0.1:5000/api/3/action/ckanext_showcase_delete -H "Authorization:{YOUR-API-KEY}" -d '{"name": "my-new-showcase"}'

- show a showcase
curl -X POST http://127.0.0.1:5000/api/3/action/ckanext_showcase_show -d '{"id": "my-new-showcase"}'

- list showcases
curl -X POST http://127.0.0.1:5000/api/3/action/ckanext_showcase_list -d ''

Dataset actions:

- add a dataset to a showcase (sysadmins and showcase admins only)
curl -X POST http://127.0.0.1:5000/api/3/action/ckanext_showcase_package_association_create -H "Authorization:{YOUR-API-KEY}" -d '{"showcase_id": "my-showcase", "package_id": "my-package"}'

- remove a dataset from a showcase (sysadmins and showcase admins only)
curl -X POST http://127.0.0.1:5000/api/3/action/ckanext_showcase_package_association_delete -H "Authorization:{YOUR-API-KEY}" -d '{"showcase_id": "my-showcase", "package_id": "my-package"}'

- list datasets in a showcase
curl -X POST http://127.0.0.1:5000/api/3/action/ckanext_showcase_package_list -d '{"showcase_id": "my-showcase"}'

- list showcases featuring a given dataset
curl -X POST http://127.0.0.1:5000/api/3/action/ckanext_package_showcase_list -d '{"package_id": "my-package"}'

Showcase admin actions:

- add showcase admin (sysadmins only)
curl -X POST http://127.0.0.1:5000/api/3/action/ckanext_showcase_admin_add -H "Authorization:{YOUR-API-KEY}" -d '{"username": "bert"}'

- remove showcase admin (sysadmins only)
curl -X POST http://127.0.0.1:5000/api/3/action/ckanext_showcase_admin_remove -H "Authorization:{YOUR-API-KEY}" -d '{"username": "bert"}'

- list showcase admins (sysadmins only)
curl -X POST http://127.0.0.1:5000/api/3/action/ckanext_showcase_admin_list -H "Authorization:{YOUR-API-KEY}" -d ''

If you already have Related Items in your database, you can use the showcase migrate command to create Showcases from Related Items.

From the ckanext-showcase directory:

paster showcase migrate -c {path to production.ini}

Note that each Related Item must have a unique title before migration can proceed. If you prefer resolving duplicates as showcases, you can use the –allow-duplicates option to migrate them anyways. Duplicate Relations will be created as ‘duplicate’ + original_related_title + ‘_’ + related_id

paster showcase migrate -c {path to production.ini} –allow-duplicates

The Related Item property type will become a Showcase tag. The Related Item properties created, owner_id, view_count, and featured have no equivalent in Showcases and will not be migrated.

Related Item data is not removed from the database by this command.

Running the Tests

To run the tests, do:

nosetests --ckan --nologcapture --with-pylons=test.ini

To run the tests and produce a coverage report, first make sure you have coverage installed in your virtualenv (pip install coverage) then run:

nosetests --ckan --nologcapture --with-pylons=test.ini --with-coverage --cover-package=ckanext.showcase --cover-inclusive --cover-erase --cover-tests

Registering ckanext-showcase on PyPI

ckanext-showcase should be availabe on PyPI as https://pypi.python.org/pypi/ckanext-showcase. If that link doesn’t work, then you can register the project on PyPI for the first time by following these steps:

  1. Create a source distribution of the project:

    python setup.py sdist
    
  2. Register the project:

    python setup.py register
    
  3. Upload the source distribution to PyPI:

    python setup.py sdist upload
    
  4. Tag the first release of the project on GitHub with the version number from the setup.py file. For example if the version number in setup.py is 0.0.1 then do:

    git tag 0.0.1
    git push --tags
    

Releasing a New Version of ckanext-showcase

ckanext-showcase is availabe on PyPI as https://pypi.python.org/pypi/ckanext-showcase. To publish a new version to PyPI follow these steps:

  1. Update the version number in the setup.py file. See PEP 440 for how to choose version numbers.
  2. Create a source distribution of the new version:

    python setup.py sdist
    
  3. Upload the source distribution to PyPI:

    python setup.py sdist upload
    
  4. Tag the new release of the project on GitHub with the version number from the setup.py file. For example if the version number in setup.py is 0.0.2 then do:

    git tag 0.0.2
    git push --tags
    

i18n

See: “Internationalizing strings in extensions” : http://docs.ckan.org/en/latest/extensions/translating-extensions.html

  1. Install babel

    pip install Babel

  2. Init Catalog for your language

    python setup.py init_catalog -l es

  3. Compile your language catalog ( You can force pybabel compile to compile messages marked as fuzzy with the -f)

    python setup.py compile_catalog -f -l es

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