htmx integration

static/packages/htmx/ext/rails-method.js

@@ -0,0 +1,14 @@
+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('rails-method', {
+    onEvent: function (name, evt) {
+        if (name === "configRequest.htmx") {
+            var methodOverride = evt.detail.headers['X-HTTP-Method-Override'];
+            if (methodOverride) {
+                evt.detail.parameters['_method'] = methodOverride;
+            }
+        }
+    }
+});