Owens
System.get_env("MY_API_KEY") works in iex console but not in Development
Hello all,
I’ve set up an API key in my dev.exs config but my Phoenix app isn’t reading it. It works in iex console.
sendgrid_api_key =
System.get_env("SENDGRID_API_KEY") ||
raise """
environment variable SENDGRID_API_KEY is missing.
"""
Leads to
$ iex -S mix phx.server
** (RuntimeError) environment variable SENDGRID_API_KEY is missing.
But in IEX console
iex> System.get_env("SENDGRID_API_KEY")
Outputs the correct key.
I set this variable using
$ export SENDGRID_API_KEY='MY_API_KEY'
Marked As Solved
Owens
So I took a recommendation from @NobbZ and changed the code to output all the env variables:
sendgrid_api_key =
System.get_env() |> Enum.each(fn {k, v} -> IO.puts("#{k} => #{v}") end)
When I run iex -S mix phx.server 59 environment variables show (NOT including the one I want), but when I run iex -S mix only 39 show (including the one I want).
Solution
I took a gamble and just ran $ export SENDGRID_API_KEY='MY_API_KEY' again, now everything is working! 
Not sure why it didn’t work the first time, oh well. My guess is quitting terminal and reloading it might have also fixed this.
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