How can a Yii2 advanced-template application be deployed on Heroku? The Heroku file-system is read only so any changes made by opening a bash session and running php init are overwritten. I feel like I must be missing something because I’ve seen plenty of people mention successfully deploying. I’ve tried using the Heroku release-phase but the changes still seem to be overwritten.
The way to solve this is with a post install script in composer. In your composer file add a scripts key and use the post-install-cmd key to specify the script you want to run:
"require":{},
"scripts": {
"post-install-cmd": "sh post-install-cmd.sh"
}
Your post-install-cmd.sh file should look like this:
#!/bin/sh
if [ -n "$DYNO" ] && [ -n "$ENV" ]; then
php init --env=$ENV --overwrite=All
php yii migrate/up --interactive=0
php yii cache/flush-all
php yii cache/flush-schema --interactive=0
fi
Heroku will run composer automatically and so your migrations will also be run - don’t forget to include any migrations that need to be run for any extensions you may be using.