Add Resource to axum-extra (#538)

axum-extra/src/routing/mod.rs

@@ -0,0 +1,35 @@
+//! Additional types for defining routes.
+
+use axum::Router;
+
+mod resource;
+
+pub use self::resource::Resource;
+
+/// Extension trait that adds additional methods to [`Router`].
+pub trait RouterExt<B>: sealed::Sealed {
+    /// Add a [`Resource`] to the router.
+    ///
+    /// See [`Resource`] for more details.
+    fn resource<F>(self, name: &str, f: F) -> Self
+    where
+        F: FnOnce(resource::Resource<B>) -> resource::Resource<B>;
+}
+
+impl<B> RouterExt<B> for Router<B> {
+    fn resource<F>(self, name: &str, f: F) -> Self
+    where
+        F: FnOnce(resource::Resource<B>) -> resource::Resource<B>,
+    {
+        f(resource::Resource {
+            name: name.to_owned(),
+            router: self,
+        })
+        .router
+    }
+}
+
+mod sealed {
+    pub trait Sealed {}
+    impl<B> Sealed for axum::Router<B> {}
+}