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