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Technical contribution guide

This is a guide for making technical contributions to CiviForm. ****
If you haven't already, please read our code of conduct.
Join the conversation in the Civiform Slack workspace.

Getting started

To set up your environment and learn how to run a local CiviForm server and tests, see Getting started.

Issue tracking

Development tasks are managed in the GitHub issues for this repository. When you begin working on an issue, please self-assign or comment on it indicating you're beginning work to avoid duplicate effort.
If you're just getting started, check out issues labeled with Good First Issue. Also check out issues in the next milestone so you can work on the highest-priority tasks.

Git workflows

Command line

To start working on a change, get the latest state from the github repository into your main branch then create a new local development branch:
# Switches to your main branch, which is used for syncing only and checks that you are indeed on the main branch.
git checkout main
git branch
# Downloads any commits from the github repository that your local repository does not have.
git fetch origin
# Creates a new local branch `your_username/dev-branch-description`.
# The repository file contents are set to the same as the github repository's main branch.
git checkout -b your_username/dev-branch-description origin/main
Then start making your changes. In general, smaller commits that make "one" logical change are easier to manage and change as development progresses. The 'Commit Guidelines' section in this guide has more discussion on commit best practices. The repository is configured such that all commits in a pull request are squashed into one commit when the pull request is merged so having many commits poses no issues.
When you make a change the change initially is 'unstaged'. To package a change into a commit you need to instruct git to 'stage' the change. See this guide for details on staged vs unstaged changes.
# Shows what branch you are on and what files you have modified. All changes will start as unstaged.
git status
# Stage changes for a commit.
#
# The add command supports many ways to specify what changes to stage. To stage only certain changes, use:
git add -- path/to/file/1 path/to/file/2
# To interactively choose what changes to stage, use:
git add --patch
# To stage all changes:
git add .
Once some changes are staged, you can create a commit the packages them together with a description:
# Double-check only the desired changes are staged.
git status
# Create a new commit packaging the staged changes with the description `My change`.
git commit --message 'My change'
When you are ready to have your commits reviewed, create a branch on the github repository that corresponds to your local branch:
git push --set-upstream origin your_username/dev-branch-description
If you need to make any changes before merging into origin/main, first get any new commits from the github repository and merge them into your local branch:
git pull
Make the desired changes. Then stage and package them into another commit:
git status
git add .
git commit --message 'My updates'
Re-push your local branch to the github repository:
git push

GitHub Desktop

This is a stand alone UI that is installed from https://desktop.github.com/
Add your repository
  1. 1.
    In the upper left click Current Repository.
  2. 2.
    Selected Add -> Add Existing Repository...
  3. 3.
    Navigate to the /civiform directory for your repository and select it.
Create a new branch
For each PR you create you'll want to make a new branch.
  1. 1.
    In the upper middle click Current Branch
  2. 2.
    Click New Branch
  3. 3.
    Type in a name for the branch. Branches are unique across the project repo so, prefixing it with you userid and being specific to the PR will help prevent conflicts with others.
  4. 4.
    Base your branch off of main in most cases.
Locally Commit changes
As you change files they will appear in the "changed files" section on the left, both edited and added one.
  1. 1.
    Select the files you want to commit locally with the checkboxes
  2. 2.
    Type a Summary and optional description
  3. 3.
    Click commit
You can do this many times as you work and want to commit where you are.
Note: Try to be careful and only commit the files you mean to. Until you Push your local commits (below) you can try to uncommit, however it's success is not always gauranteed.
Push changes to GitHub
  1. 1.
    In the upper right section click Push Origin
Your changes are now available to be added to a PR in GitHub as outlined below. You can commit and push as much as desired.
Sync your repo and branch with main
As others merge in new code you may want or need to update your local repo and branches to also contain them.
Update your main
  1. 1.
    Change the current branch to your main
  2. 2.
    From the menu do Repository -> Pull
Update your branch from your main
  1. 1.
    Change the current branch to the branch you're working in
  2. 2.
    From the menu do Branch -> Update from Main
If you're editing files that others have merged changes to you may need to resolve the merge conflicts. The tool will let you select each file and manually resolve the conflict. Look for the <<<< and >>> sections indicating your changes and the main repos and decide what your PR should have.

Creating a pull request

When you're ready to have your code reviewed, open a pull request. After pushing a new branch there should be a "Compare & pull request" button on the github repository. Alternatively, go to the new pull request page in github.
Include "Closes #X" in the description to link the relevant issue.

Getting reviews on a pull request

It's easy for the intention of code review comments to be unclear or get misinterpreted. To help with communication, reviewers are encouraged to use conventional comments and explicitly indicate that comments are (blocking), where the discussion must be resolved for PR to be merged, or (non-blocking) where resolving the discussion is optional for the implementer.

Adding Reviewers

You can select the reviewer you feel most has context on your PR. If you want a round robin review, our repo supports that (it will cycle through people within the team 'civiform/developers', more details on how to add roundrobin reviews here. Once that is done you can add the name of the team (civiform/developers) in the reviewer box and it will auto assign someone.

Responding to comments

When a review has been provided, reply to comments and then re-request a review by clicking the "arrows pointing in a circle" icon next to the reviewers name in the Reviewers section on the Conversation tab.

Approval and merging

Reviewers should grant approval if they do not feel additional review is necessary before merging. This does not necessarily mean no more changes are required before merging, but that any further changes are expected to be minor enough to not require review.
If the pull request does not require additional changes, the reviewer should merge it immediately after approving. Otherwise, once they have addressed all comments marked (blocking) or nit, the pull request author should either merge if able or re-request review and merging from a maintainer if not. Authors are encouraged to at least reply to (non-blocking) and (if-minor) comments if they do not address them with code changes.

Workflow tips

1. Provide comments concisely

There are two ways to leave comments (whether giving or replying), and two interfaces to reply to a PR review request.
The Discussions tab will only let you apply single comments and replies that each generate and email.
The Files tab, will allow you to do the above as well "Start a review" when you leave your first comment. All subsequent comments in the Files tab will be batched into the review. When you're done reviewing them you can then publish them all with Review Changes in the upper right.
It's recommended that you batch comments this way to reduce email noise, provide a clear review, as well let you edit/delete comments before sending.

2. View changes since your last review

You can view only changes since your last Review (using Review Changes above)
As you're reviewing files, you can checkmark that you're done with the changes in it by clicking the checkbox to the far right of the file name.
When you publish your review the checkbox state will be remembered.
When new commits occur you can see only those changes by finding Changes from all commits just below the PR name, selecting all commits and clicking Show changes since your last review
GitHub kinda lets you do this ad hoc, but the UI is hard to use and it doesn't track where you left off if you're doing multiple review rounds.

3. Incrementally see your own PR changes

You can do Tip #2 on your own PRs through the same process of selection the check box and publishing a Review. You can just do a "comment" review and give a perfunctory comment of "Baselining for review"

Getting up to speed

Want to get up to speed on this project? Awesome! Please see the following:
  • Work on at least one issue tagged with good first issue before moving to others. Feel free to ask for task recommendations in Slack.
  • Pair program with one of the project's main engineers. Reach out on Slack - we're happy to help!