htmx integration

static/packages/htmx/ext/path-params.js

@@ -0,0 +1,15 @@
+if (htmx.version && !htmx.version.startsWith("1.")) {
+    console.warn("WARNING: You are using an htmx 1 extension with htmx " + htmx.version +
+        ".  It is recommended that you move to the version of this extension found on https://htmx.org/extensions")
+}
+htmx.defineExtension('path-params', {
+    onEvent: function(name, evt) {
+        if (name === "htmx:configRequest") {
+            evt.detail.path = evt.detail.path.replace(/{([^}]+)}/g, function (_, param) {
+                var val = evt.detail.parameters[param];
+                delete evt.detail.parameters[param];
+                return val === undefined ? "{" + param + "}" : encodeURIComponent(val);
+          })
+        }
+    }
+});