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October 15, 2020 03:29
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Alerts in Reactive Rails style (with Shoelace web components)
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| %sl-alert.popup-toast{id: id, type: type, open: false, duration: duration, closable: true} | |
| %sl-icon{slot: "icon", name: icon} | |
| - if title.present? | |
| %strong= title | |
| %br | |
| = text |
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| // app/javascript/channels/alerts_channel.js | |
| import CableReady from 'cable_ready' | |
| import consumer from "./consumer" | |
| consumer.subscriptions.create("AlertsChannel", { | |
| connected() { | |
| console.log("AlertsChannel connected") | |
| }, | |
| disconnected() { | |
| console.log("AlertsChannel disconnected") | |
| }, | |
| received(data) { | |
| if (data.cableReady) { | |
| CableReady.perform(data.operations) | |
| document.querySelectorAll('sl-alert.popup-toast').forEach(function (a) { | |
| a.toast() | |
| }) | |
| } | |
| } | |
| }); |
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| # app/channels/alerts_channel.rb | |
| class AlertsChannel < ApplicationCable::Channel | |
| def subscribed | |
| stream_from "alerts" | |
| stream_for current_user | |
| end | |
| def unsubscribed | |
| # Any cleanup needed when channel is unsubscribed | |
| end | |
| end |
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <%= render partial: "head" %> | |
| <body class="sl-theme-dark" data-reflex-root="#site-content"> | |
| <%= render partial: "header" %> | |
| <div id="site-content"> | |
| <%= yield %> | |
| <%= render Audio::Player.new(track: @track_to_play) %> | |
| <div id="dialogs"></div> | |
| </div> | |
| <div id="alerts"></div> | |
| <%= render partial: "footer" %> | |
| <%= render partial: "flash" %> | |
| </body> | |
| </html> |
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| # app/reflexes/application_reflex.rb | |
| class ApplicationReflex < StimulusReflex::Reflex | |
| include ApplicationHelper | |
| include CableReady::Broadcaster | |
| delegate :current_user, to: :connection | |
| delegate :render, to: ApplicationController | |
| # todo: extract to a concern. bonus points if it works for both reflexes and controllers | |
| around_reflex :broadcast_alerts | |
| def alert(opts) | |
| @alerts << opts.merge(type: "primary", icon: "info-circle") | |
| end | |
| def success(opts) | |
| @alerts << opts.merge(type: "success", icon: "check2-circle") | |
| end | |
| def info(opts) | |
| @alerts << opts.merge(type: "info", icon: "gear") | |
| end | |
| def warning(opts) | |
| @alerts << opts.merge(type: "warning", icon: "exclamation-triangle", duration: nil) | |
| end | |
| def danger(opts) | |
| @alerts << opts.merge(type: "danger", icon: "exclamation-octagon", duration: nil) | |
| end | |
| private | |
| def broadcast_alerts | |
| @alerts = [] | |
| yield | |
| @alerts.each { |opts| send_alert(opts) } | |
| end | |
| def send_alert(opts) | |
| opts = { id: random_id, title: "", duration: 3000 }.merge(opts) | |
| cable_ready["alerts"].insert_adjacent_html(selector: "#alerts", html: render(partial: "alert", locals: opts)) | |
| cable_ready.broadcast_to(current_user) | |
| end | |
| end |
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