Debug code to see what is going on inside selectInput. Trying to set a value contained on server

inst/www/shared/shiny.js

@@ -6715,12 +6715,28 @@
       value: function setValue(el, value) {
         if (!isSelectize(el)) {
           (0, import_jquery16.default)(el).val(value);
-        } else {
-          var selectize = this._selectize(el);
-          if (selectize) {
-            selectize.setValue(value);
-          }
+          return;
         }
+        var selectize = this._selectize(el);
+        if (!selectize)
+          return;
+        if (!selectize.settings.load) {
+          selectize.setValue(value);
+          return;
+        }
+        window.console.log("Querying server side value:", value);
+        var callbackFn = function callbackFn2(res) {
+          if (!res)
+            return;
+          window.console.log("Received server side value:", res);
+          if (hasOwnProperty(res, "value")) {
+            selectize.setValue(res.value);
+          } else if (selectize.settings.maxItems === 1) {
+            selectize.setValue(res[0].value);
+          }
+        };
+        selectize.clearOptions();
+        selectize.settings.load.apply(selectize, ["", callbackFn]);
       }
     }, {
       key: "getState",

srcts/src/bindings/input/selectInput.ts

@@ -64,13 +64,33 @@ class SelectInputBinding extends InputBinding {
   setValue(el: SelectHTMLElement, value: string): void {
     if (!isSelectize(el)) {
       $(el).val(value);
-    } else {
-      const selectize = this._selectize(el);
-
-      if (selectize) {
-        selectize.setValue(value);
-      }
+      return;
     }
+    const selectize = this._selectize(el);
+
+    if (!selectize) return;
+    if (!selectize.settings.load) {
+      selectize.setValue(value);
+      return;
+    }
+
+    window.console.log("Querying server side value:", value);
+
+    const callbackFn = (res) => {
+      if (!res) return;
+      window.console.log("Received server side value:", res);
+
+      if (hasOwnProperty(res, "value")) {
+        selectize.setValue(res.value);
+      } else if (selectize.settings.maxItems === 1) {
+        // first item selected by default only for single-select
+        selectize.setValue(res[0].value);
+      }
+    };
+
+    // Server side filtering
+    selectize.clearOptions();
+    selectize.settings.load.apply(selectize, ["", callbackFn]);
   }
   getState(el: SelectHTMLElement): {
     label: JQuery<HTMLElement>;