Clojurians Log v2

Uh, when I specify a vector as “className” attribute to dom/div or other such function, the class attribute is set to the items in vector joined by , instead of a space

I have another issue that’s probably something obvious but I can’t nail it down:

(defsc LoginPage [this {:ui/keys [error-message]}]
  {:query [:ui/error-message]
   :ident (fn [] [:component/id ::LoginPage])
   :initial-state {}}
  (let [username (or (comp/get-state this :username) "username")]
    (dom/div :.cs-gradient.h-screen.flex
      (dom/input {:type "text"
                  :value username
                  :onChange #(comp/set-state! this {:username (evt/target-value %)})})
      ........

Warning: A component is changing a controlled input to be uncontrolled. This is likely caused by the value changing from a defined to undefined, which should not happen. Decide between using a controlled or uncontrolled input element for the lifetime of the component. More info:  

Deleted a message by mistake: in routing_demo2 I look at render of LoginScreen in Root:

(contains? cfg ::LoginScreen)
        (let [LoginScreen* (comp/registry-key->class ::LoginScreen)]
          ((comp/factory LoginScreen*) {}))

(defsc LoginScreen [this {:ui/keys [error-message] :as _props}]
  {:query         [:ui/error-message]
   :ident         (fn [] [:component/id ::LoginScreen])

(transition {:event :auth/login-failed}
              (script {:expr (fn [_env _data _event-name _event-data & _]
                               [(ops/assign :ui/error-message "Login failed. Please try again.")])}))