How to get base branch name dynamically in deploy.preview.
On pull_request/megre how to get the base branch name(means for which branch I am going to merge if pull successful)
process.env.BRANCH => pull/606/head (I do not want this)
process.env.HEAD => JIRA-ID_XXX (I do not want this)
Build environment variables | Netlify Docs (I do not found any)
Same question earlier but not answered till now
Why is Branch (process.env.BRANCH or $BRANCH in bash) have value of Merge request and id. why not actual branch name as of git. and is there anyway to get actual branch name during build process to ignore certain named branch from building.
netlify Branch env value merge-requests/34/head
Check out the
Deploy URLs and metadata which states
URL representing the primary URL for an individual deploy, or a group of them, like branch deploys and Deploy Previews; for example,
I want something else.
My build in package.json is based on the branches like dev1, dev2, main, staging
npm run build:$BRANCH
This $BRANCH(or any otherway) could get the base branch to run by build.
I checked the metadata but Netlify did not providing.
As far as I am aware,
$BRANCH is not available to the
You would possibly need to write your own script
(e.g. a bash script) that could check the branch and run the appropriate build command.
Thanks for reply.
But how to get the base branch when doing pull request in [context.deploy-preview] in netlify.toml file? (I need this)
It would be great if Netlify provides one more env variable called BASE
You would most likely have to rely on Git commands to get a branch name. Not sure if it’s the right one in context of a PR, but maybe
git status --branch shows the correct one?
It won’t work.
This is not the context when making PR from github.com
Meanwhile I got a solution:
-H “Accept: application/vnd.github+json”
-H “Authorization: Bearer ”
In JSON response there is a “base” key
base.ref => Base Branch Name
Not sure If Netlify Team could provide a new environment variable called BASE_BRANCH in future.
Do you have answer of my question?
It would be great if you help me.
How to get base branch name dynamically(during build) in deploy.preview(for a pull request) in netlify.toml?
It seems the approach we suggested earlier doesn’t work and we’re already brainstorming what could be done in the short term.
We’ll probably have to open a feature request but we’ll let you know soon!
I don’t know more than Gualter
But I think you should be able to use the git command line utility to get that information, though I do not know how exactly. But, once we start your build, we do have a full clone of the repo, so commands accessing the local copy of the clone - like
git status - just work normally. Perhaps you can find a way to use those to show the info you need? We’re not super-experts on command line git, so you may have to do the research yourself to find the details
I came here with the same problem.
HEAD env var is working for me (any variation of git status does not, as Netlify creates a new temporary branch with the build ID as the name).
Thanks for coming back and sharing,