TokenRouter needs explicit GET when POST is used

[dustinmoris]

Originally created by @forki in https://github.com/giraffe-fsharp/Giraffe/issues/158

---

Reminder for @gerardtoconnor ;-)

sent you actual routes in screenshot. It's along the lines of:

 router notfound [
      subRoute "/api" [
           // get routes
           route "/hey" f
           POST [
              route "/there" f2
           ]
 ]

not working. but following is:

 router notfound [
      subRoute "/api" [
           GET [
               route "/hey" f
           ]
           POST [
              route "/there" f2
           ]
 ]

[dustinmoris]

Posted by @gerardtoconnor

---

I'll look into this, thanks for raising.

The issue relates to it being able to partially match the non-filtered root before realizing it's a dead-end but there may have been a route possible in filtered routes earlier in the tree.

There are a few ways to fix but I want to make sure it's performant & clean so please bear with me and use the explicit route filtering as you have for now thanks.

[dustinmoris]

Posted by @gerardtoconnor

---

@forki I know breaking changes are annoying but when I created the method filter functions I overlooked the fact that many people like to do filter as last leg in chain eg:

router notfound [
      subRoute "/api" [
           subRoute "/hey" [
                GET f1
                POST f2
           ]
           POSTGRP [
              route "/there" f3
           ]
 ]

So I am wondering how I handle it and if I have two separate functions for each method eg for GET:

1. GET : HttpHandler -> Node -> Node
2. GETGRP : (Node -> Node) list -> Node

not changing anything yet but along with this bug fix want to make sure fixes against this issue as

router notfound [
      subRoute "/api" [
           GET [ 
                route "/hey" f1 
           ]
           POST [ 
                route "/hey" f2
           ]
           POST [
              route "/there" f3
           ]
 ]

Is bit repetitive and frustrating for user having to write route "/hey" twice?

[danieljsummers]

This seems to be more generalized than that. I just hit an issue where I had a GET section defined, and then one defined outside a verb list (because it needs to hand HEAD and OPTIONS too), and my GET wasn't found. I can work around it, so no worries; I'll be keeping an eye on this, though, so I can remove my workaround once I upgrade.

(FWIW, I'd be fine with an API change if necessary; as a manager I used to work with liked to say, "We reserve the right to get smarter." :) )

[gerardtoconnor]

Given there is always a verb required with list being relatively stable, rather then grouping, I was thinking of instead adopting the Saturn function naming scheme of get/getf, post/postf etc, and it's what I actually use in Zebra router which is a copy tweaked version of this router. It would be a drastic API change so not sure if it's a starter for most given the messy upgrade work invloved?