Add max_items, selected, multiple and include_blank.

Added functionality to select, updated simuluscontroller to listen to the added data attributes, Updated Trix editor

app/assets/javascripts/administrate/controllers/select_controller.js

@@ -2,7 +2,28 @@ import { Controller } from "@hotwired/stimulus";
 import $ from "jquery";
 
 export default class extends Controller {
+  static values = {
+    selected: { Array , default: [] }, // Use an array to support multiple selected values
+    includeBlank: { type: Boolean, default: false },
+    multiple: { type: Boolean, default: false },
+    maxItems: { type: Number }
+  }
+
   connect() {
-    $(this.element).selectize({});
+    var optionsCount = null
+    if (this.multipleValue) { optionsCount = 1 }
+    if (this.maxItemsValue) { optionsCount = this.maxItemsValue }
+
+    const selectElement = $(this.element).selectize({
+      allowEmptyOption: this.includeBlankValue,
+      maxItems: optionsCount
+    });
+
+    const selectizeInstance = selectElement[0].selectize;
+
+    // Set the default selected value(s)
+    if (this.selectedValue.length > 0) {
+      selectizeInstance.setValue(this.selectedValue);
+    }
   }
-};
+}

app/views/fields/select/_form.html.erb

@@ -24,10 +24,21 @@ to be displayed on a resource's edit form page.
       field.attribute,
       options_for_select(
         field.selectable_options,
-        field.selected.presence || field.data
+        field.data
       ),
-      {include_blank: field.include_blank_option},
-      data: {controller: field.html_controller}
+      {
+        include_blank: field.include_blank_option,
+        multiple: field.options[:multiple],
+      },
+      data: {
+        controller: field.html_controller,
+        select: {
+          selected_value: Array.wrap(field.selected).to_json,
+          include_blank_value: field.include_blank_option,
+          multiple_value: field.options[:multiple],
+          max_items_value: field.options[:max_items]
+        }
+      }
     )
   %>
 </div>

lib/administrate/field/select.rb

@@ -32,6 +32,10 @@ def selected
         options.fetch(:selected, nil)
       end
 
+      def max_items
+        options.fetch(:max_items, nil)
+      end
+
       def active_record_enum?
         resource.class.defined_enums.key?(attribute.to_s)
       end

spec/example_app/app/views/admin/stats/index.html.erb

@@ -1,7 +1,7 @@
 <div style="padding: 20px">
   <h1>Stats</h1>
   <br>
-  <p><b>Total Customers:</b> <%= @stats[:customer_count] %></h1>
+  <p><b>Total Customers:</b> <%= @stats[:customer_count] %></h1></p>
   <br>
-  <p><b>Total Orders:</b> <%= @stats[:order_count] %></h1>
+  <p><b>Total Orders:</b> <%= @stats[:order_count] %></h1></p>
 </div>