Hi, I set some application environment variables based on System’s environment variables in config.exs file like this: config/config.exs master config :coliving, app_title: System.get_env("APP_TITLE") || "CoThings", app_image_url: …

In your config.exs (or a similar file) you are doing this: config :foo, :bar, System.get_env("ENV") As System.get_env/1 always returns a string (the system environment isn’t even able to store something else), Application.get_env(:foo, :bar) will of course return a string as well. If you want to …

Environment variables are always strings. If you wish to cast them to a different type, you need to do that manually. Be careful about getting environment variables in your config.exs files, as they are evaluated during build time and will reflect the build environment. When you move to production,…

Great article! Thanks! It says don’t mix the env (build & runtime) however I can see there’re same configs for both. I assume they’ll be separated in their each env. When it releases it will be runtime, otherwise build time config. And I couldn’t setup init method for my project. I guess it depends…

[image] nesimtunc: app env. variables are string App env can be whatever you want, system environment though is string only.

[image] nesimtunc: It says don’t mix the env (build & runtime) however I can see there’re same configs for both. Not sure what you mean by this. The main thing to think about is that the normal config files are evaluated at build time, but config/releases.exs is evaluated at startup time. …

[image] Nicd: Not sure what you mean by this. The main thing to think about is that the normal config files are evaluated at build time, but config/releases.exs is evaluated at startup time. Sorry, I guess I read it somewhere else. So, it shouldn’t be a problem. Thanks!

[image] NobbZ: App env can be whatever you want, system environment though is string only. oh you mean it becomes string because it might be set in string in env variables or system env variables are always string? I run the application like this: LOG_ROOM_USAGE=true LOG_ROOM_USAGE_WITH_DEV…

Thanks! @NobbZ ! where would be to put this function in a best place since I’ll use it in a few places.

For config you have no other possibility than to put it in exactly the config in which you use it.

Can't access application environment variables as boolean

Questions & Help Questions

NobbZ May 8, 2020, 7:45am 4

App env can be whatever you want, system environment though is string only.