kostonstyle
Hi all
What are the values of opts parameter from plug:
import Plug.Conn
def init(opts), do: opts
def call(conn, _opts) do
conn
|> put_resp_content_type("application/json")
end
Thanks
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harterc3
Whatever is returned from
initis passed in as the second parameter tocall.initis run at compile time so that is where you’d put any heavy work to be done so thatcallisn’t slowed down at run time.The
optsparam passed intoinitcomes from whatever values you give the plug in your code. For example,plug MyApp.Plug, repo: MyApp.Repowould causeinitto be run with[repo: MyApp.Repo]as theoptsparam. I could then use my passed in repo to get data ready for when the plug is actually invoked or I could just pass the repo as the second param tocallif that’s all I needed.