1 files changed, 17 insertions, 0 deletions
diff --git a/app/javascript/controllers/thing_controller.js b/app/javascript/controllers/thing_controller.js
new file mode 100644
index 0000000..1518216
--- /dev/null
+++ b/app/javascript/controllers/thing_controller.js
@@ -0,0 +1,17 @@
+import { Controller } from "@hotwired/stimulus"
+
+// Gathers all the methods that are relevant when manipulating things.
+export default class extends Controller {
+  // Update the external link depending on the changed value. The link will also
+  // be hidden/shown depending if the current URL is empty or not.
+  updateLink() {
+    let cur = document.getElementById("thing_url").value.trim();
+
+    if (cur === "") {
+      document.getElementById("thing-external-url-id").classList.add('hidden');
+    } else {
+      document.getElementById("thing-external-url-id").classList.remove('hidden');
+      document.getElementById("thing-external-url-id").href = cur;
+    }
+  }
+}