redirects, middleware, Transport, set/capture error status (#4751)

* wip: redirect

* redirect example

* fix file upload not in a form

* wip

* deny missing cfgs

* wip: add router fallback but it's not working

* fix suspense bug after rebuilds that queued work

* more cleanup

* add test for error codes

* add helpful comment

* bring back middleware annotation

* fix cfg

* add server feature

* fix doctest

* just disable liveview test for now

* fix liveview

* dont send init

* cache more playwright!

* add more pkgs to cache

examples/07-fullstack/redirect.rs

@@ -0,0 +1,50 @@
+//! This example shows how to use the axum `Redirect` type to redirect the client to a different URL.
+//!
+//! On the web, a redirect will not be handled directly by JS, but instead the browser will automatically
+//! follow the redirect. This is useful for redirecting to different pages after a form submission.
+//!
+//! Note that redirects returned to the client won't navigate the SPA to a new page automatically.
+//! For managing a session or auth with client side routing, you'll need to handle that in the SPA itself.
+
+use dioxus::{fullstack::Redirect, prelude::*};
+
+fn main() {
+    dioxus::launch(|| {
+        rsx! {
+            Router::<Route> {}
+        }
+    });
+}
+
+#[derive(Clone, PartialEq, Routable)]
+enum Route {
+    #[route("/")]
+    Home,
+
+    #[route("/blog")]
+    Blog,
+}
+
+#[component]
+fn Home() -> Element {
+    rsx! {
+        h1 { "Welcome home" }
+        form {
+            method: "post",
+            action: "/api/old-blog",
+            button { "Go to blog" }
+        }
+    }
+}
+
+#[component]
+fn Blog() -> Element {
+    rsx! {
+        h1 { "Welcome to the blog!" }
+    }
+}
+
+#[post("/api/old-blog")]
+async fn redirect_to_blog() -> Result<Redirect> {
+    Ok(Redirect::to("/blog"))
+}