thojanssens1
Function Phoenix.Endpoint.url/0 is undefined or private
Hello,
When I try to use:
IO.inspect Phoenix.Endpoint.url()
it says:
function Phoenix.Endpoint.url/0 is undefined or private
I tried to call another function from Phoenix like IO.inspect Phoenix.json_library() and it works (returns “Jason”).
Why does it say that the function url/0 is undefined or private?
Marked As Solved
aesmail
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sb8244
When you use Phoenix.Endpoint, the __using__ macro is invoked (phoenix/lib/phoenix/endpoint.ex at v1.4.10 · phoenixframework/phoenix · GitHub). This function unquotes several other blocks of code (phoenix/lib/phoenix/endpoint.ex at v1.4.10 · phoenixframework/phoenix · GitHub).
Here you can see where url/0 is implemented (phoenix/lib/phoenix/endpoint.ex at v1.4.10 · phoenixframework/phoenix · GitHub).
The callback dictates which functions must be defined when you implement a Behavior. url/0 is one of these functions. Phoenix, of course, provides default implementations for all of these core Behaviors.
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