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add maintain attrs hook

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shibao 2022-01-23 00:02:08 -05:00
parent 1a526cd580
commit bf7d732155
2 changed files with 13 additions and 1 deletions
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6
assets/js/app.js
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@ -25,9 +25,13 @@ import "phoenix_html"
import {Socket} from "phoenix"
import {LiveSocket} from "phoenix_live_view"
import topbar from "../vendor/topbar"
import MaintainAttrs from './maintain_attrs'
let csrfToken = document.querySelector("meta[name='csrf-token']").getAttribute("content")
let liveSocket = new LiveSocket("/live", Socket, {params: {_csrf_token: csrfToken}})
let liveSocket = new LiveSocket("/live", Socket, {
params: { _csrf_token: csrfToken },
hooks: { MaintainAttrs }
})
// Show progress bar on live navigation and form submits
topbar.config({barColors: {0: "#29d"}, shadowColor: "rgba(0, 0, 0, .3)"})

8
assets/js/maintain_attrs.js Normal file
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@ -0,0 +1,8 @@
// maintain user adjusted attributes, like textbox length on phoenix liveview
// update. https://github.com/phoenixframework/phoenix_live_view/issues/1011
export default {
attrs(){ return this.el.getAttribute("data-attrs").split(", ") },
beforeUpdate(){ this.prevAttrs = this.attrs().map(name => [name, this.el.getAttribute(name)]) },
updated(){ this.prevAttrs.forEach(([name, val]) => this.el.setAttribute(name, val)) }
}