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Move to using reg-sub (rather than register-sub-pure)

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Mike Thompson 2016-06-24 23:15:00 +10:00
parent cbef1ec268
commit 8747d2b14a
2 changed files with 13 additions and 15 deletions
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18
examples/todomvc/src/todomvc/subs.cljs
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@ -1,10 +1,10 @@
(ns todomvc.subs (ns todomvc.subs
(:require [re-frame.core :refer [register-pure-sub subscribe]])) (:require [re-frame.core :refer [reg-sub subscribe]]))
;; register-pure-sub allows us to write subscription handlers without ever ;; register-pure-sub allows us to write subscription handlers without ever
;; using `reaction` directly. ;; using `reaction` directly.
;; This is how you would register a simple handler. ;; This is how you would register a simple handler.
(register-pure-sub (reg-sub
:showing :showing
(fn [db _] ;; db, is the value in app-db (fn [db _] ;; db, is the value in app-db
(:showing db))) ;; I repeat: db is a value. Not a ratom. And this fn does not return a reaction, just a value. (:showing db))) ;; I repeat: db is a value. Not a ratom. And this fn does not return a reaction, just a value.
@ -17,7 +17,7 @@
(defn sorted-todos (defn sorted-todos
[db _] [db _]
(:todos db)) (:todos db))
(register-pure-sub :sorted-todos sorted-todos) (reg-sub :sorted-todos sorted-todos)
;; ------------------------------------------------------------------------------------- ;; -------------------------------------------------------------------------------------
;; Beyond Simple Handlers ;; Beyond Simple Handlers
@ -47,7 +47,7 @@
;; In the two simple examples at the top, we only supplied the 2nd of these functions. ;; In the two simple examples at the top, we only supplied the 2nd of these functions.
;; But now we are dealing with intermediate nodes, we'll need to provide both fns. ;; But now we are dealing with intermediate nodes, we'll need to provide both fns.
;; ;;
(register-pure-sub (reg-sub
:todos :todos
;; This function returns the input signals. ;; This function returns the input signals.
@ -77,7 +77,7 @@
;; As a result note: ;; As a result note:
;; - the first function (which returns the signals, returns a 2-vector) ;; - the first function (which returns the signals, returns a 2-vector)
;; - the second function (which is the computation, destructures this 2-vector as its first parameter) ;; - the second function (which is the computation, destructures this 2-vector as its first parameter)
(register-pure-sub (reg-sub
:visible-todos :visible-todos
(fn [query-v _] ;; returns a vector of two signals. (fn [query-v _] ;; returns a vector of two signals.
[(subscribe [:todos]) [(subscribe [:todos])
@ -115,7 +115,7 @@
;; register-pure-sub provides some macro sugar so you can nominate a very minimal ;; register-pure-sub provides some macro sugar so you can nominate a very minimal
;; vector of input signals. The 1st function is not needed. ;; vector of input signals. The 1st function is not needed.
;; Here is the example above rewritten using the sugar. ;; Here is the example above rewritten using the sugar.
#_(register-pure-sub #_(reg-sub
:visible-todos :visible-todos
:<- [:todos] :<- [:todos]
:<- [:showing] :<- [:showing]
@ -127,19 +127,19 @@
(filter filter-fn todos)))) (filter filter-fn todos))))
(register-pure-sub (reg-sub
:all-complete? :all-complete?
:<- [:todos] :<- [:todos]
(fn [todos _] (fn [todos _]
(seq todos))) (seq todos)))
(register-pure-sub (reg-sub
:completed-count :completed-count
:<- [:todos] :<- [:todos]
(fn [todos _] (fn [todos _]
(count (filter :done todos)))) (count (filter :done todos))))
(register-pure-sub (reg-sub
:footer-counts ;; XXXX different from original. Now does not return showing :footer-counts ;; XXXX different from original. Now does not return showing
:<- [:todos] :<- [:todos]
:<- [:completed-count] :<- [:completed-count]

10
src/re_frame/core.cljs
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@ -9,13 +9,12 @@
;; -- API ------- ;; -- API -------
;; See also macros in clj file
(def dispatch router/dispatch) (def dispatch router/dispatch)
(def dispatch-sync router/dispatch-sync) (def dispatch-sync router/dispatch-sync)
(def register-sub subs/register) (def register-sub subs/register)
(def register-pure-sub subs/register-pure) (def reg-sub subs/register-pure)
(def clear-sub-handlers! subs/clear-handlers!) (def clear-sub-handlers! subs/clear-handlers!)
(def subscribe subs/subscribe) (def subscribe subs/subscribe)
@ -33,17 +32,16 @@
;; -- Undo API ----- ;; -- Undo API -----
;; For an explanation of the undo/redo capabilities: ;; Docs on undo/redo: https://github.com/Day8/re-frame/wiki/Undo-&-Redo
;; https://github.com/Day8/re-frame/wiki/Undo-&-Redo
(def undoable undo/undoable) (def undoable undo/undoable)
(def undo-config! undo/undo-config!) (def undo-config! undo/undo-config!)
;; -- Logging ----- ;; -- Logging -----
;; re-frame uses the logging functions: warn, log, error, group and groupEnd ;; Internally, re-frame uses the logging functions: warn, log, error, group and groupEnd
;; By default, these functions map directly to the js/console implementations, ;; By default, these functions map directly to the js/console implementations,
;; but you can override with your own (set or subset). ;; but you can override with your own fns (set or subset).
;; Example Usage: ;; Example Usage:
;; (defn my-warn-fn [& args] (post-it-somewhere (apply str args))) ;; (defn my-warn-fn [& args] (post-it-somewhere (apply str args)))
;; (re-frame.core/set-loggers! {:warn my-warn-fn}) ;; (re-frame.core/set-loggers! {:warn my-warn-fn})