Task to switch to a deploy branch and push to heroku

Install this grunt plugin next to your project's grunt.js gruntfile with: npm install grunt-heroku-deploy

Then add this line to your project's grunt.js gruntfile:

grunt.loadNpmTasks('grunt-heroku-deploy');

Here's how I use this:

I do my dev on master which is set up to push to wherever I'm storing code.

git branch --set-upstream master origin/master

I set up a branch locally that will be my deploy branch - it might have some different configuration's committed. It pushes to heroku by default.

git branch --set-upstream deploy heroku/master

Now I can run grunt heroku-deploy while on the master branch, which will do:

git checkout deploy  # switch to the deploy branch
git merge master     # merge in the changes I was making
git push             # push it to heroku
git checkout master  # switch back to where I was so I can continue developing

If you want to specify the deploy branch name, use the 'deployBranch' property on each target like so:

grunt.initConfig({
	'heroku-deploy' : {
        production : {
            deployBranch : 'prod'
        },
        staging : {
            deployBranch : 'staging'
        }
    }
});

You may also provide a tag if you'd like to automatically create a new tag (and optionally push it up to origin):

grunt.initConfig({
  pkg: grunt.file.readJSON('package.json'),
  'heroku-deploy' : {
      production : {
          deployTag : 'v<%= pkg.version %>',
          pushTag : true,
          origin : 'origin'
      }
  }
})

This will create a new tag, push it to origin, and deploy that tag to heroku:

git tag v0.1.1  # create a new tag
git push origin v0.1.1 # push the tag to origin (this is skipped if pushTag is missing or false)
git push -f heroku v0.1.1^{}:master

As this is a tag, it will skip the merge step because the current changes will be present in the tag.

If you would like to specify the name of the heroku remote, you can add it to the options as herokuRemote:

grunt.initConfig({
	'heroku-deploy' : {
        production : {
            deployBranch : 'prod',
            herokuRemote : 'heroku'
        }
    }
})

In lieu of a formal styleguide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code using grunt.

0.1.0 - "works for me". Needs testing and feedback.

Copyright (c) 2012 Adam Ahmed
Licensed under the MIT license.