Deploy Time!!!

Go to

Click on your app

Then click on settings

heroku app interface

You should see something that looks like this

heroku config vars

Click on the button that says Reveal Config Vars

Make sure you have the following environment variables set. Note - they may not be set in this same order. Anything not in this list, you should set.

DATABASE_URL: heroku-sets-this-for=you
MIX_ENV: prod  **you need to set this one**

Now in the empty row at the bottom of the page

empty heroku config var

in the first empty field create a new variable called


Then take a look at the value in your DATABASE_URL variable, by clicking on the pencil icon next to it. It should look something like


Copy the portion after the @ sign through and paste it as the value for the NEW_DATABASE_URL.

So it will be something like

Then in the next blank field under the var settings type in USERNAME on the right. Then take another look at your database url.

For example this database url look like so


It has the following format


Copy the username portion of the url and paste is at the left value in your config variables.

Then Click Add.

It should look like this


Do the same for password. Create a Variable called PASSWORD. and then copy the password from the correct portion of the database url


Do the same again for database. Create a Variable called DATABASE and copy the value from the end of the DATABASE URL. Here is an example -


Your config should look something like this heroku config

You should have the following variables now defined


Then Open up your config/prod.exs file. It should look like this.

# Configure your database
config :test_app, TestApp.Repo,
  adapter: Ecto.Adapters.Postgres,
  hostname: System.get_env("NEW_DATABASE_URL"),
  pool_size: String.to_integer(System.get_env("POOL_SIZE") || "10"),
  ssl: true,
  database: System.get_env("DATABASE"),
  username: System.get_env("USERNAME"),
  password: System.get_env("PASSWORD")

Let’s commit all our changes. Copy each of the lines below into your terminal one at a time. Do not do this all at once.

git add config/prod.exs
git add Procfile.txt
git add lib/test_app_web/channels/user_socket.ex
git commit -m "Use production config from Heroku ENV variables and deploy environment"

And now DEPLOY!!

Type this into your terminal:

git push heroku master

You will see a bunch of stuff and at the end you will see

remote: Verifying deploy.... done.
   ae7601a..e5c410b  master -> master
Annas-MacBook-Pro-3:test_app anheroku logs -a stormy-stream-65433

If you do not see the ‘Verifying deploy…done’, ask a TA for help.

next type the following into your terminal

npm install brunch

then type

node_modules/brunch/bin/brunch  build --production

Finally type

heroku run "mix ecto.migrate"

YAY all done!


heroku open

to see your app.