Environment variable not found: DATABASE_URL. Prisma and mysql - mysql

Question

I've developped an API with Node.Js, Express, Prisma and Mysql in local firstly. After that it works, I have deployed my API on Heroku and I took the ClearDB add-on to have a Mysql DB on Heroku.
So the deployment is OKAY when I go on my root root URI I have the "Cannot GET /" message, and when I try to connect to my ClearDB with MysqlWorkbench I have my tables, columns etc...
The main problem is from Prisma.
When I go to the "Run console" of my Heroku's project, the command npx prisma init works perfectly BUT when I type npx prisma migrate deploy || dev or also if I try to npx prisma db push I have this error =>
Error: Get Config: Schema parsing - Error while interacting with query-engine-node-api library
Error code: P1012
error: Environment variable not found: DATABASE_URL.
--> schema.prisma:10
|
9 | provider = "mysql"
10 | url = env("DATABASE_URL")
|
All my code is in a GitHub repo, I've configured my .env (which is in the root folder of my server) like this :
DATABASE_URL="mysql://<username>:<my-password>#eu-cdbr-west-30.cleardb.net/heroku_36d295ebb6686a2"
NODE_ENV="development"
APP_SECRET="jwtsecret12"
NODE_PATH="./src"
ACCESS_TOKEN_SECRET="651651651848754cdfce9fz8ef4ef54se8f4sef48s69ef84e"
I hope you have all the informations that you need to help me :)
PS : Locally my project works perfectly
Waiting for your answers, thank you very much !

Answer 1

Your .env file is irrelevant. It should not be used on Heroku (and should not be tracked in your repository).
ClearDB provides an environment variable called CLEARDB_DATABASE_URL, not DATABASE_URL. You can either change your code to use this variable instead of DATABASE_URL, or you can set DATABASE_URL to the same value:
Retrieve your database URL by issuing the following command:
heroku config | grep CLEARDB_DATABASE_URL
CLEARDB_DATABASE_URL => mysql://adffdadf2341:adf4234#us-cdbr-east.cleardb.com/heroku_db?reconnect=true
Copy the value of the CLEARDB_DATABASE_URL config variable.
If you’re using Ruby on Rails and the mysql2 gem, you will need to change the mysql:// scheme in the CLEARDB_DATABASE_URL to mysql2://
heroku config:set DATABASE_URL='mysql://adffdadf2341:adf4234#us-cdbr-east.cleardb.com/heroku_db?reconnect=true'
Adding config vars:
DATABASE_URL => mysql2://adffd...b?reconnect=true
Restarting app... done, v61.
The connection information for Heroku Postgres can change at any time, but since the ClearDB documentation provides the preceding guidance I would hope that it does not do so.