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[英]How to use variable in phoenix framework in a handle_event function?
[英]handle_event not working for Phoenix LiveView example
https://github.com/katpavan/liveview-testapp/blob/master/lib/liveviewapp_web/live/foo_live.ex
foo_live.ex :
defmodule LiveviewappWeb.FooLive do
use LiveviewappWeb, :live_view
require Logger
@impl true
def mount(_params, _session, socket) do
{:ok, assign(socket, msg: "this is a message", results: %{})}
end
def render(assigns) do
~L"""
<h1>Hello</h1>
<div phx-keydown="keydown" phx-target="window">
<%= @msg %>
</div>
"""
end
def handle_event("keydown", %{"key" => key}, socket) do
Logger.debug "Var value: #{inspect(key)}"
{:noreply, assign(socket, msg: key)}
end
end
这是我进入页面时看到的。 但是当我点击 div 中的文本并输入时,handle_event 不会触发。
有几种方法可以实现这一点:
将tabview=0
设置为 div,更多细节参考这个答案:
<div id="test" phx-keydown="keydown" tabindex="0">
使用phx-window-keydown
,但这将使句柄全局化:
<div id="test" phx-window-keydown="keydown">
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