3 * https://www.ruby-lang.org/ - The homepage of Ruby which has more links and some great tutorials.
4 * https://rubyonrails.org/ - The homepage of Rails, also has links and tutorials.
8 We use [Rubocop](https://github.com/rubocop-hq/rubocop) (for ruby files)
9 and [ERB Lint](https://github.com/Shopify/erb-lint) (for erb templates)
10 to help maintain consistency in our code. You can run these utilities during
11 development to check that your code matches our guidelines:
15 bundle exec rails eslint
19 You can also install hooks to have git run checks automatically when
20 you commit using [overcommit](https://github.com/sds/overcommit) with:
23 bundle exec overcommit --install
28 Having a good suite of tests is very important to the stability and
29 maintainability of any code base. The tests in the `openstreetmap-website` code are
30 by no means complete, but they are extensive, and must continue to be
31 so with any new functionality which is written. Tests are also useful
32 in giving others confidence in the code you've written, and can
33 greatly speed up the process of merging in new code.
35 When contributing, you should:
37 * Write new tests to cover the new functionality you've added.
38 * Where appropriate, modify existing tests to reflect new or changed
40 * Never comment out or remove a test just because it doesn't pass.
42 You can run the existing test suite with:
45 bundle exec rails test:all
48 You can run javascript tests with:
54 You can view test coverage statistics by browsing the `coverage` directory.
56 The tests are automatically run on Pull Requests and other commits via github
57 actions. The results shown are within the PR display on github.
61 We also perform static analysis of our code. You can run the analysis yourself with:
64 bundle exec brakeman -q
69 Sometimes it's not apparent from the code itself what it does, or,
70 more importantly, **why** it does that. Good comments help your fellow
71 developers to read the code and satisfy themselves that it's doing the
74 When contributing, you should:
76 * Comment your code where necessary - explain the bits which
77 might be difficult to understand what the code does, why it does it
78 and why it should be the way it is.
79 * Check existing comments to ensure that they are not misleading.
83 If you make a change that involve the locale files (in `config/locales`) then please
84 only submit changes to the `en.yml` file. The other files are updated via
85 [Translatewiki](https://translatewiki.net/wiki/Translating:OpenStreetMap) and should
86 not be included in your pull request.
88 ### Copyright attribution
90 The list of attributions on the /copyright page is managed by the [OSMF Licensing
91 Working Group (LWG)](https://wiki.osmfoundation.org/wiki/Licensing_Working_Group).
93 If you want to add another attribution, or make changes to the text of an existing
94 attribution, please follow these steps:
96 * First, contact the LWG to discuss your proposed changes.
97 * If the LWG approves, please create a pull request with your proposed changes.
98 * Finally, please ask the LWG to formally approve the wording used in the pull request
99 (by having an LWG member comment on the PR).
101 When we have formal confirmation from LWG, we can go ahead and merge the PR.
105 When you submit your changes, the project maintainers have to read them and
106 understand them. This is difficult enough at the best of times, and
107 misunderstanding commits can lead to them being more difficult to
108 merge. To help with this, when committing you should:
110 * Split up large commits into smaller units of functionality.
111 * Keep your commit messages relevant to the changes in each individual
114 When writing commit messages please try and stick to the same style as
115 other commits, namely:
117 * A one line summary, starting with a capital and with no full stop.
119 * Full description, as proper sentences with capitals and full stops.
121 For simple commits the one line summary is often enough and the body
122 of the commit message can be left out.
126 If you have forked on GitHub then the best way to submit your patches is to
127 push your changes back to GitHub and then send a "pull request" on GitHub.
129 If your pull request is small, for example one or two commits each containing
130 only a few lines of code, then it is easy for the maintainers to review.
132 If you are creating a larger pull request, then please help the maintainers
133 with making the reviews as straightforward as possible:
135 * The smaller the PR, the easier it is to review. In particular if a PR is too
136 large to review in one sitting, or if changes are requested, then the
137 maintainer needs to repeatedly re-read code that has already been considered.
138 * The commit history is important. This is a large codebase, developed over many
139 years by many developers. We frequently need to read the commit history (e.g.
140 using `git blame`) to figure out what is going on. So small, understandable,
141 and relevant commits are important for other developers looking back at your
144 If you are creating a large pull request then please:
146 * Consider splitting your pull request into multiple PRs. If part of your work
147 can be considered standalone, or is a foundation for the rest of your work,
148 please submit it separately first.
149 * Avoid including "fixup" commits. If you have added a fixup commit (for example
150 to fix a rubocop warning, or because you changed your own new code) please
151 combine the fixup commit into the commit that introduced the problem.
152 `git rebase -i` is very useful for this.
153 * Avoid including "merge" commits. If your PR can no longer be merged cleanly
154 (for example, an unrelated change to Gemfile.lock on master now conflicts with
155 your PR) then please rebase your PR onto the latest master. This allows you to
156 fix the conflicts, while keeping the PR a straightforward list of commits. If
157 there are no conflicts, then there is no need to rebase anything.