36 lines
957 B
Clojure
36 lines
957 B
Clojure
(ns $PROJECT_NAME_HYPHENATED$.handlers
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(:require
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[re-frame.core :refer [register-handler after]]
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[cljs.spec :as s]
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[$PROJECT_NAME_HYPHENATED$.db :as db :refer [app-db]]))
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;; -- Middleware ------------------------------------------------------------
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;;
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;; See https://github.com/Day8/re-frame/wiki/Using-Handler-Middleware
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;;
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(defn check-and-throw
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"Throw an exception if db doesn't have a valid spec."
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[spec db]
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(when-not (s/valid? spec db)
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(let [explain-data (s/explain-data spec db)]
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(throw (ex-info (str "Spec check failed: " explain-data) explain-data)))))
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(def validate-spec-mw
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(if goog.DEBUG
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(after (partial check-and-throw ::db/app-db))
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[]))
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;; -- Handlers --------------------------------------------------------------
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(register-handler
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:initialize-db
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validate-spec-mw
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(fn [_ _]
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app-db))
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(register-handler
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:set-greeting
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validate-spec-mw
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(fn [db [_ value]]
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(assoc db :greeting value)))
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