handle_event 不适用于 Phoenix LiveView 示例
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,当我单击 div 中的文本并键入时,handle_event 不会触发。
实现这个的方法很少:
设置tabview=0
为div,参考this答案了解更多详情:
使用phx-window-keydown
,但这将使句柄成为全局句柄:
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,当我单击 div 中的文本并键入时,handle_event 不会触发。
实现这个的方法很少:
设置
tabview=0
为div,参考this答案了解更多详情:使用
phx-window-keydown
,但这将使句柄成为全局句柄: