Clojurians Log v2

well so in other news, i have added untangled-system with tony’s guidance to 0.6.3-SNAPSHOT which just lets you handle the ring middleware stack

we have a router that supports route change mutations and post-route change call backs

:templates/new   (fn [{:keys [template-type]}]
                      (let [dash (:dash (generate/template template-type (state/current-user)))]
                        {:mutations `[(dashboard/new ~(assoc dash :template? true))
                                      (dashboard/open ~dash)]
                         :post-cb   #(navigate {:page     :dashboards/show
                                                :params   {:id (:id dash)}
                                                :replace? true})}))

sorry to interrupt lol

np

anyway, point being that you can make your router a component that provides a middleware function and have consumers just plug it in wherever they want it

we’re testing this stuff out with one of our apps & untangled-components’ image library if you want to take a sneak peak

oh this router is frontend only, at least that’s how we’re using it

ah ok

yeah much the om next router library

sounds useful, and it uses bidi?

yeah

idk if its related, but i cant seem to find om.tempid/TempId when in a clj file

so after reading a bit of bidi, i cant find anything that lets you put an arbitrary function in a pattern segment

and based on what i could decypher from bidi.bidi.cljc they extend some other protocols to let what you want work with keywords/uuids

at first glance i think transform-param might what you want: https://github.com/juxt/bidi/blob/master/src/bidi/bidi.cljc#L71

@adambros should be here no? https://github.com/omcljs/om/blob/ee4c7ac33934fcd9b3ea663045ced1408dd7df24/src/main/om/tempid.cljc#L36

i wonder why it’s a deftype in cljs and a defrecord in clj?

yeah the repl cant find it, but i can jump to source and see it

well this works

(om.tempid/->TempId (java.util.UUID/randomUUID))
  =&gt; <#C06DT2YSY|om>/id["ca7c8476-cdf1-4ef3-b7f8-f385ad23ba29"] 

i guess that makes sense since it is a record?

yeah i can see the constructors but not the type

yeah that is strange

(class (om.tempid/tempid))
  => om.tempid.TempId

might be a jvm/clojure namespace thing

so i think what’s happening is that this https://github.com/juxt/bidi/blob/master/src/bidi/bidi.cljc#L151 is catching your function tempid and failing to match matches?

you can refer to the type as om.tempid.TempId

yes

whats weird is that i cannot get it to use this (extend-protocol bidi.bidi/PatternSegment MyId …) instead of the Fn one

hmm, i’m pretty hung over and sleep deprived at the moment. I’ll play with this tomorrow

thanks for helping

haha no problem

i would say without docs on this, its probably not supported well if at all

yeah true, but it seems like something a routing lib should totally do

an extensible clojurescript-y one anyway

oh hmm

i just…

(def routes
  ["" {"dashboards/" {[[(myid 666) :id] "/edit"] :edit}}])

i guess you need an instance of it instead of the fn

i think i tried that

kinda works

but bidi.bidi/match-route still doesn’t work

(specification "bidi tempids"
  (assertions
    (bidi.bidi/path-for routes :edit :id (myid 123))
    => "dashboards/123/edit"
    (bidi.bidi/match-route routes "dashboards/42/edit")
    => {:route-params {:id (myid "42")} :handler :edit}
    ))

and its the right type!

using this:

(defrecord MyId [id])

(extend-protocol bidi.bidi/ParameterEncoding
  MyId
  (encode-parameter [myid]
    (str (.-id myid))))

(defn myid [id]
  (->MyId id))

(extend-protocol bidi.bidi/PatternSegment
  MyId
  (segment-regex-group [_] #"\d+")
  (param-key [_] nil)
  (transform-param [_] myid)
  (unmatch-segment [this s] (str (.-id this)))
  (matches? [this s] (= (type s) MyId)))

you should be able to do something similar and maybe tweak the matches?

hmm maybe

i’ll try

(def routes
  ["/"
   {
    "dashboards/" {""                  :dashboards/index
                   "new"               :dashboards/new
                   [[long :id] "/edit"] :dashboards/edit
                   [[bidi.bidi/uuid :id] "/edit2"] :dashboards/edit2
                   [[(om/tempid) :id] "/edit3"] :dashboards/edit3
                   [[(myid 666) :id] "/edit3"] :dashboards/edit4
                   }
    ""            [[true :dashboards/index]]}])

(bidi.bidi/path-for routes :edit :id (myid 123))
=> nil

it looks like it’s returning nil

oh wait

my bad

i think to get it so you dont have to do make a tempid you’d have to add one that checks based on class

a PatternSegment for java.lang.Class

anyway this should get you closer

yeah definitely, thanks a lot

@adambros i did it a different way which doesn’t require a stub value in the routes https://clojurians.slack.com/files/currentoor/F2X828WTS/bidi_om_next_cljs.clj