Hello,
I have searched the forum about using environment variables and none of the suggestions consistently worked for me.
I’m on Phoenix 1.7.12 and have tried Dotenvy and DotenvParser for reading .env files.
.env
SECRET=123ABCDE
HELLO=WORLD
config/runtime.exs
import Dotenvy
source!([".env", System.get_env()])
config :my_app,
hello: env!("HELLO", :string!),
secret: env!("SECRET", :string!)
iex
Dotenvy.source!(".env")
# %{"HELLO" => "WORLD", "SECRET" => "123ABCDE"}
env!("HELLO", :string!)
# "WORLD"
Application.get_env(:my_app, :hello)
# nil
When I try Application.get_env(:my_app, :hello), it returns nil. Same deal if I use DotenvParser. Not sure what I’m doing wrong
Thanks
I will tell you my experience of using it may help.
I create a condition in runtime:
# runtime.exs
if config_env() == :prod do
amqp_url =
System.get_env("AMQP_URL") ||
raise """
enviroment variable AMQP_URL is missing
"""
config :pioneer_rpc,
connection_string: amqp_url
# other config
end
I run the application itself as a system process and specify EnviromentFile=pathToEnvFile in the app.service config
example:
server@server ~> cat /etc/systemd/system/app.service
[Unit]
Description=test
After=network.target
[Service]
Restart=on-failure
EnvironmentFile=/etc/app/env.conf
WorkingDirectory=/opt/app
ExecStart=/opt/app/_build/prod/rel/app/bin/app start
ExecStop=/opt/app/_build/prod/rel/app/bin/app stop
[Install]
WantedBy=multi-user.target
Next, the property can be accessed using Application.get_env(:connection_string).
Have you verified that the call in runtime.exs is actually looking for a .env file in the project root (which iex can see) rather than in the config directory?
1 Like
Nicd
April 12, 2024, 6:54am
4
Are you running iex -S mix
or just plain iex
? Just running iex
won’t evaluate any of your project files such as the configuration.
1 Like
I figured it out. I put the environment variables within the :prod scope. Working normally now that I moved it outside :prod. Thanks all!