1 files changed, 47 insertions, 0 deletions
diff --git a/app/assets/javascripts/filterable_list.js b/app/assets/javascripts/filterable_list.js
new file mode 100644
index 00000000000..f498c3ea973
--- /dev/null
+++ b/app/assets/javascripts/filterable_list.js
@@ -0,0 +1,47 @@
+/**
+ * Makes search request for content when user types a value in the search input.
+ * Updates the html content of the page with the received one.
+ */
+export default class FilterableList {
+  constructor(form, filter, holder) {
+    this.filterForm = form;
+    this.listFilterElement = filter;
+    this.listHolderElement = holder;
+
+    this.initSearch();
+  }
+
+  initSearch() {
+    this.debounceFilter = _.debounce(this.filterResults.bind(this), 500);
+
+    this.listFilterElement.removeEventListener('input', this.debounceFilter);
+    this.listFilterElement.addEventListener('input', this.debounceFilter);
+  }
+
+  filterResults() {
+    const form = this.filterForm;
+    const filterUrl = `${form.getAttribute('action')}?${$(form).serialize()}`;
+
+    $(this.listHolderElement).fadeTo(250, 0.5);
+
+    return $.ajax({
+      url: form.getAttribute('action'),
+      data: $(form).serialize(),
+      type: 'GET',
+      dataType: 'json',
+      context: this,
+      complete() {
+        $(this.listHolderElement).fadeTo(250, 1);
+      },
+      success(data) {
+        this.listHolderElement.innerHTML = data.html;
+
+       // Change url so if user reload a page - search results are saved
+        return window.history.replaceState({
+          page: filterUrl,
+
+        }, document.title, filterUrl);
+      },
+    });
+  }
+}