docs(example): add a get query method to params example (#2601)

0x79756b69 · web-flow · commit f70c8ffc7b94 · 2021-07-21T09:09:38.000-07:00
diff --git a/examples/params.rs b/examples/params.rs
@@ -68,6 +68,29 @@ async fn param_example(req: Request<Body>) -> Result<Response<Body>, hyper::Erro
             let body = format!("Hello {}, your number is {}", name, number);
             Ok(Response::new(body.into()))
         }
+        (&Method::GET, "/get") => {
+            let query = if let Some(q) = req.uri().query() {
+                q
+            } else {
+                return Ok(Response::builder()
+                    .status(StatusCode::UNPROCESSABLE_ENTITY)
+                    .body(MISSING.into())
+                    .unwrap());
+            };
+            let params = form_urlencoded::parse(query.as_bytes())
+                .into_owned()
+                .collect::<HashMap<String, String>>();
+            let page = if let Some(p) = params.get("page") {
+                p
+            } else {
+                return Ok(Response::builder()
+                    .status(StatusCode::UNPROCESSABLE_ENTITY)
+                    .body(MISSING.into())
+                    .unwrap());
+            };
+            let body = format!("You requested {}", page);
+            Ok(Response::new(body.into()))
+        }
         _ => Ok(Response::builder()
             .status(StatusCode::NOT_FOUND)
             .body(Body::empty())
