Initial commit

app/assets/javascripts/collapse_select.js

@@ -0,0 +1,11 @@
+$(document).on("change", "[data-toggle=collapse-select]", function(event) {
+  const select = event.target;
+  const target = select.dataset.target;
+  const showValues = JSON.parse(select.dataset.showValues);
+
+  if (showValues.indexOf(select.value) > -1) {
+    $(target).show("fast");
+  } else {
+    $(target).hide("fast");
+  }
+});