Make checklist entries sortable by d&d

app/controllers/checklist_entries_controller.rb

@@ -33,8 +33,13 @@ class ChecklistEntriesController < ApplicationController
   # PATCH/PUT /checklist_entries/1
   def update
     if @checklist_entry.update(checklist_entry_params)
+      respond_to do |format|
+        format.turbo_stream
+        format.html do
           redirect_to @checklist_entry.checklist, notice: "Checklist entry was successfully updated.",
                                                   status: :see_other
+        end
+      end
     else
       render :edit, status: :unprocessable_entity
     end

app/javascript/controllers/drag_controller.js

@@ -0,0 +1,38 @@
+import { Controller } from "@hotwired/stimulus"
+import Sortable from "sortablejs"
+import { put } from "@rails/request.js";
+
+// Connects to data-controller="drag"
+export default class extends Controller {
+  static values = {
+    group: String
+  }
+
+  connect() {
+    this.element.style.cursor = "grab"
+    new Sortable(this.element, {
+      group: this.groupValue,
+      onEnd: this.onEnd,
+      animation: 150,
+      swap: true,
+      swapThreshold: 0.65,
+      ghostClass: 'dragFrom',
+      swapClass: 'dragTo',
+      forceFallback: false,
+    })
+    
+  }
+
+  onEnd(event) {
+    const position = event.newIndex + 1
+    const url = event.item.dataset["sortableUrl"]
+    // Expect backend to update list items via turbo if necessary
+    put(url, {
+      body: JSON.stringify({ checklist_entry: { position: position }}),
+      contentType: "application/json",
+      headers: {
+        "Accept": "text/vnd.turbo-stream.html, text/html, application/xhtml+xml"
+      }
+    })
+  }
+}

app/javascript/controllers/index.js

@@ -13,6 +13,9 @@ application.register("check-link", CheckLinkController)
 import CollapseChevronTogglerController from "./collapse_chevron_toggler_controller"
 application.register("collapse-chevron-toggler", CollapseChevronTogglerController)
 
+import DragController from "./drag_controller"
+application.register("drag", DragController)
+
 import HelloController from "./hello_controller"
 application.register("hello", HelloController)
 

app/models/check.rb

@@ -105,14 +105,24 @@ class Check < ApplicationRecord
   end
 
   def display_target_disabilities
-    %i[visual auditory physical cognitive].select { |d| send(:"#{d}?") }.map { |d| I18n.t("disability.#{d}") }.join(", ")
+    %i[visual auditory physical cognitive].select { |d| send(:"#{d}?") }
+                                          .map { |d| I18n.t("disability.#{d}") }
+                                          .sort
+                                          .join(", ")
   end
 
   def display_applicabilities
-    %i[applicable_to_analogue applicable_to_app applicable_to_document applicable_to_non_web applicable_to_web].select { |a| send(:"#{a}?") }.map { |a| I18n.t("applicability.#{a}") }.join(", ")
+    %i[applicable_to_analogue 
+       applicable_to_app 
+       applicable_to_document 
+       applicable_to_non_web 
+       applicable_to_web].select { |a| send(:"#{a}?") }
+                         .map { |a| I18n.t("applicability.#{a}") }
+                         .sort
+                         .join(", ")
   end
 
   def display_label
-    "#{name_de} (#{[number, external_number].compact_blank.join("/")})"
+    [external_number, name_de].compact_blank.join(" ")
   end
 end

app/views/checklist_entries/_checklist_entry.html.erb

@@ -3,13 +3,18 @@
 
 <div id="<%= dom_id checklist_entry %>" class="hover-row py-1">
     <div class="d-flex">
-      <div style="width: 56px">
+      <i class="bi bi-grip-vertical text-secondary mt-2"></i>
-    <%= button_to tag.i(class: "bi bi-arrow-down"), checklist_entry_path(checklist_entry), method: :patch, class: "btn btn-link p-0 #{"pe-3" if is_last } float-start", data: { turbo_frame: "checklist_entries" }, params: { checklist_entry: { position: checklist_entry.position + 1 }} unless is_last %>
+      <div style="">
-    <%= button_to tag.i(class: "bi bi-arrow-up"), checklist_entry_path(checklist_entry), method: :patch, class: "btn btn-link p-0 pe-3 float-start", data: { turbo_frame: "checklist_entries" }, params: { checklist_entry: { position: checklist_entry.position - 1 }} unless is_first %>
+    <% button_to tag.i(class: "bi bi-arrow-down"), checklist_entry_path(checklist_entry), method: :patch, class: "btn btn-link p-0 #{"pe-3" if is_last } float-start", data: { turbo_frame: "checklist_entries" }, params: { checklist_entry: { position: checklist_entry.position + 1 }} unless is_last %>
+    <% button_to tag.i(class: "bi bi-arrow-up"), checklist_entry_path(checklist_entry), method: :patch, class: "btn btn-link p-0 pe-3 float-start", data: { turbo_frame: "checklist_entries" }, params: { checklist_entry: { position: checklist_entry.position - 1 }} unless is_first %>
       </div>
       <div class="d-inline-flex flex-grow-1">
     <%# checklist_entry.position %>
-    <%= link_to([checklist_entry.position, checklist_entry.check.display_label].join(" "), checklist_entry.check, data: { turbo_frame: "_top" }, class: "flex-grow-1") %>
+    
+    <span class="flex-grow-1 mt-2">
+      <%= checklist_entry.check.display_label %>
+    </span>
+    <%= link_to(tag.id(class: "bi bi-search"), checklist_entry.check, data: { turbo_frame: "_top" }, class: "btn btn-link") %>
     <%= button_to tag.i(class: "bi bi-trash"), checklist_entry_path(checklist_entry), method: :delete, class: "btn btn-link" %>
     <%= link_to tag.i(class: "bi bi-pencil"), edit_checklist_entry_path(checklist_entry), class: "btn btn-link" %>
       </div>

app/views/checklist_entries/_form.html.erb

@@ -1,7 +1,9 @@
+<div id="<%= dom_id checklist_entry %>">
 <%= bootstrap_form_with(model: checklist_entry, layout: :horizontal) do |form| %>
   <%= link_to "Abbrechen", checklist_entry.persisted? ? checklist_entry : checklist_entry.checklist, class: "btn btn-outline-secondary float-end", data: { turbo_frame: "checklist_entries" } %>
   <%= form.submit class: "btn btn-secondary float-end me-2" %>
   <%= form.hidden_field :checklist_id %>
-  <%= form.collection_select :check_id, Check.all.order(:name_de), :id, :name_de %>
+  <%= form.collection_select :check_id, Check.all.order(:external_number), :id, :display_label %>
   <%# form.number_field :position %>
 <% end %>
+</div>

app/views/checklist_entries/update.turbo_stream.erb

@@ -0,0 +1 @@
+<%== @checklist_entry.checklist.checklist_entries.map { turbo_stream.update _1 }.join %>

app/views/checklists/show.html.erb

@@ -1,10 +1,7 @@
 <h1><i class="bi bi-card-checklist me-2"></i><%= "#{@checklist.name}" %></h1>
 
 <div class="row">
-  <div class="col col-md-12">
+  <div class="col col-12 col-lg-8">
-    <%= render @checklist %>
-  </div>
-  <div class="col col-md-12">
     <div class="mt-3">
       <%= link_to tag.i(class: "bi bi-plus-lg"), new_checklist_entry_path(checklist_id: @checklist.id), class: "btn btn-primary float-end", data: { turbo_frame: "checklist_entries"  } %>
       <h2>Checks</h2>
@@ -14,14 +11,19 @@
       <% end %>
     </div>
     <%= turbo_frame_tag "checklist_entries" do %>
+      <div data-controller="drag">
         <% @checklist.checklist_entries.each do |entry| %>
-        <%= turbo_frame_tag dom_id(entry, :frame) do %>
+          <%= turbo_frame_tag dom_id(entry, :frame), data: { id: entry.id, "sortable-url": url_for(entry) } do %>
             <%= render entry %>
           <% end %>
         <% end %>
         <%= tag.i "Es sind keine Checks zugewiesen." if @checklist.empty? %>
       <% end %>
     </div>
+  </div>
+    <div class="col col-12 col-lg-4">
+    <%= render @checklist %>
+  </div>
 </div>
 
 <div class="action-row">

package.json

@@ -6,6 +6,7 @@
     "@hotwired/turbo-rails": "^8.0.4",
     "@popperjs/core": "^2.11.8",
     "@rails/actiontext": "^7.1.3-4",
+    "@rails/request.js": "^0.0.11",
     "autoprefixer": "^10.4.19",
     "bootstrap": "^5.3.3",
     "bootstrap-icons": "^1.11.3",
@@ -14,6 +15,7 @@
     "postcss": "^8.4.39",
     "postcss-cli": "^11.0.0",
     "sass": "^1.77.8",
+    "sortablejs": "^1.15.3",
     "trix": "^2.1.3"
   },
   "scripts": {

yarn.lock

@@ -185,6 +185,11 @@
   dependencies:
     spark-md5 "^3.0.1"
 
+"@rails/request.js@^0.0.11":
+  version "0.0.11"
+  resolved "https://registry.yarnpkg.com/@rails/request.js/-/request.js-0.0.11.tgz#4d9be25a49d97911c64ccd0f00b79d57fca4c3b4"
+  integrity sha512-2U3uYS0kbljt+pAstN+LIlZOl7xmOKig5N6FrvtUWO1wq0zR1Hf90fHfD2SYiyV8yH1nyKpoTmbLqWT0xe1zDg==
+
 "@sindresorhus/merge-streams@^2.1.0":
   version "2.3.0"
   resolved "https://registry.npmjs.org/@sindresorhus/merge-streams/-/merge-streams-2.3.0.tgz"
@@ -712,6 +717,11 @@ slash@^5.0.0, slash@^5.1.0:
   resolved "https://registry.npmjs.org/slash/-/slash-5.1.0.tgz"
   integrity sha512-ZA6oR3T/pEyuqwMgAKT0/hAv8oAXckzbkmR0UkUosQ+Mc4RxGoJkRmwHgHufaenlyAgE1Mxgpdcrf75y6XcnDg==
 
+sortablejs@^1.15.3:
+  version "1.15.3"
+  resolved "https://registry.yarnpkg.com/sortablejs/-/sortablejs-1.15.3.tgz#033668db5ebfb11167d1249ab88e748f27959e29"
+  integrity sha512-zdK3/kwwAK1cJgy1rwl1YtNTbRmc8qW/+vgXf75A7NHag5of4pyI6uK86ktmQETyWRH7IGaE73uZOOBcGxgqZg==
+
 "source-map-js@>=0.6.2 <2.0.0", source-map-js@^1.2.0:
   version "1.2.0"
   resolved "https://registry.npmjs.org/source-map-js/-/source-map-js-1.2.0.tgz"