# Contributing

## PHP Code
- Two spaces indentation.
- CamelCase for classes.
- camelCase for methods.
- snake_case for variables and class properties.
- Composition over Inheritance.
- Comments are a code smell. If you need to use a comment - see if same idea can be achieved by more clearly expressing code.
- Require other classes with 'use' at the beginning of the class file.
- Do not specify 'public' if method is public, it's implicit.
- Always use guard clauses.
- Ensure compatibility with PHP 5.5 and newer versions.
- Cover your code in tests.

## JS Code
- Javascript code should follow the [Airbnb style guide](https://github.com/airbnb/javascript).

## Git flow
- Do not commit to master.
- Open a short-living feature branch.
- Open a pull request.
- Add Jira issue reference in the title of the Pull Request.
- Work on the pull request.
- Use the `./do qa` command to check your code style before pushing.
- Use good commit messages as explained here https://chris.beams.io/posts/git-commit
- Wait for review from another developer.

## Issues creation
- Issues are managed on Jira.
- Discuss issues on public Slack chats, discuss code in pull requests.
- Open a small Jira issue only when it has been discussed.