Contributing to CKAN¶
CKAN is free open source software and code contributions are welcome, whether they’re bug reports, source code, documentation or translations. The sections below will walk you through our processes for making different kinds of contributions to CKAN.
If you’ve found a bug in CKAN, open a new issue on CKAN’s GitHub Issues (try searching first to see if there’s already an issue for your bug).
When writing code for CKAN, try to respect our coding standards:
Generally, follow the commit guidelines from the Pro Git book:
- Try to make each commit a logically separate, digestible changeset.
- The first line of the commit message should concisely summarise the changeset.
- Optionally, follow with a blank line and then a more detailed explanation of the changeset.
- Use the imperative present tense as if you were giving commands to the codebase to change its behaviour, e.g. Add tests for..., make xyzzy do frotz..., this helps to make the commit message easy to read.
If your commit has an issue in the CKAN issue tracker put the issue number at the start of the first line of the commit message like this: [#123]. This makes the CKAN release manager’s job much easier!
Here’s an example of a good CKAN commit message:
[#2505] Update source install instructions Following feedback from markw (see #2406).
Tip: Use the reStructuredText markup format when creating a wiki page, since reStructuredText is the format that docs.ckan.org uses, this will make moving the documentation from the wiki into docs.ckan.org later easier.
For how to contribute to the offical CKAN documentation at docs.ckan.org, see the documentation guidelines.
Once you’ve written some CKAN code or documentation, you can submit it for review and merge into the central CKAN git repository by making a pull request. This section will walk you through the steps for making a pull request.
Create a git branch
Each logically separate piece of work (e.g. a new feature, a bug fix, a new docs page, or a set of improvements to a docs page) should be developed on its own branch forked from the master branch.
The name of the branch should include the issue number (if this work has an issue in the CKAN issue tracker), and a brief one-line synopsis of the work, for example:
Fork CKAN on GitHub
Sign up for a free account on GitHub and fork CKAN, so that you have somewhere to publish your work.
Add your CKAN fork to your local CKAN git repo as a git remote. Replace USERNAME with your GitHub username:
git remote add my_fork https://github.com/USERNAME/ckan
Commit and push your changes
Commit your changes on your feature branch, and push your branch to GitHub. For example, make sure you’re currently on your feature branch then run these commands:
git add doc/my_new_feature.rst git commit -m "Add docs for my new feature" git push my_fork my_branch
When writing your git commit messages, try to follow the Commit Messages guidelines.
Send a pull request
Once your work on a branch is complete and is ready to be merged into the master branch, create a pull request on GitHub. A member of the CKAN team will review your work and provide feedback on the pull request page. The reviewer may ask you to make some changes. Once your pull request has passed the review, the reviewer will merge your code into the master branch and it will become part of CKAN!
When submitting a pull request:
Your branch should contain one logically separate piece of work, and not any unrelated changes.
You should have good commit messages, see Commit Messages.
Your branch should contain new or changed tests for any new or changed code, and all the CKAN tests should pass on your branch, see Testing CKAN.
Your branch should contain new or updated documentation for any new or updated code, see Writing Documentation.
Your branch should be up to date with the master branch of the central CKAN repo, so pull the central master branch into your feature branch before submitting your pull request.
For long-running feature branches, it’s a good idea to pull master into the feature branch periodically so that the two branches don’t diverge too much.
Merging a pull request¶
If you’re reviewing a pull request for CKAN, when merging a branch into master:
- Use the --no-ff option in the git merge command,