Dont write empty strings in link

packages/router/src/components/link.rs

@@ -244,14 +244,18 @@ pub fn Link(props: LinkProps) -> Element {
         }
     }
 
-    let tag_target = new_tab.then_some("_blank").unwrap_or_default();
+    let class = if class_.is_empty() {
+        None
+    } else {
+        Some(class_)
+    };
+
+    let tag_target = new_tab.then_some("_blank");
 
     let is_external = matches!(parsed_route, NavigationTarget::External(_));
     let is_router_nav = !is_external && !new_tab;
     let prevent_default = is_router_nav.then_some("onclick").unwrap_or_default();
-    let rel = rel
-        .or_else(|| is_external.then_some("noopener noreferrer".to_string()))
-        .unwrap_or_default();
+    let rel = rel.or_else(|| is_external.then_some("noopener noreferrer".to_string()));
 
     let do_default = onclick.is_none() || !onclick_only;
 
@@ -270,9 +274,9 @@ pub fn Link(props: LinkProps) -> Element {
             onclick: action,
             href,
             prevent_default,
-            class: class_,
+            class,
             rel,
-            target: "{tag_target}",
+            target: tag_target,
             ..attributes,
             {children}
         }

packages/router/tests/via_ssr/link.rs

@@ -74,12 +74,9 @@ fn href_internal() {
     }
 
     let expected = format!(
-        "<h1>App</h1><a {href} {default} {class} {rel} {target}>Link</a>",
+        "<h1>App</h1><a {href} {default}>Link</a>",
         href = r#"href="/test""#,
         default = r#"dioxus-prevent-default="onclick""#,
-        class = r#"class="""#,
-        rel = r#"rel="""#,
-        target = r#"target="""#
     );
 
     assert_eq!(prepare::<Route>(), expected);
@@ -111,12 +108,10 @@ fn href_external() {
     }
 
     let expected = format!(
-        "<h1>App</h1><a {href} {default} {class} {rel} {target}>Link</a>",
+        "<h1>App</h1><a {href} {default} {rel}>Link</a>",
         href = r#"href="https://dioxuslabs.com/""#,
         default = r#"dioxus-prevent-default="""#,
-        class = r#"class="""#,
         rel = r#"rel="noopener noreferrer""#,
-        target = r#"target="""#
     );
 
     assert_eq!(prepare::<Route>(), expected);
@@ -149,12 +144,10 @@ fn with_class() {
     }
 
     let expected = format!(
-        "<h1>App</h1><a {href} {default} {class} {rel} {target}>Link</a>",
+        "<h1>App</h1><a {href} {default} {class}>Link</a>",
         href = r#"href="/test""#,
         default = r#"dioxus-prevent-default="onclick""#,
         class = r#"class="test_class""#,
-        rel = r#"rel="""#,
-        target = r#"target="""#
     );
 
     assert_eq!(prepare::<Route>(), expected);
@@ -181,12 +174,10 @@ fn with_active_class_active() {
     }
 
     let expected = format!(
-        "<h1>App</h1><a {href} {default} {class} {rel} {target}>Link</a>",
+        "<h1>App</h1><a {href} {default} {class}>Link</a>",
         href = r#"href="/""#,
         default = r#"dioxus-prevent-default="onclick""#,
         class = r#"class="test_class active_class""#,
-        rel = r#"rel="""#,
-        target = r#"target="""#
     );
 
     assert_eq!(prepare::<Route>(), expected);
@@ -220,12 +211,10 @@ fn with_active_class_inactive() {
     }
 
     let expected = format!(
-        "<h1>App</h1><a {href} {default} {class} {rel} {target}>Link</a>",
+        "<h1>App</h1><a {href} {default} {class}>Link</a>",
         href = r#"href="/test""#,
         default = r#"dioxus-prevent-default="onclick""#,
         class = r#"class="test_class""#,
-        rel = r#"rel="""#,
-        target = r#"target="""#
     );
 
     assert_eq!(prepare::<Route>(), expected);
@@ -258,13 +247,10 @@ fn with_id() {
     }
 
     let expected = format!(
-        "<h1>App</h1><a {href} {default} {class} {rel} {target} {id}>Link</a>",
+        "<h1>App</h1><a {href} {default} {id}>Link</a>",
         href = r#"href="/test""#,
         default = r#"dioxus-prevent-default="onclick""#,
-        class = r#"class="""#,
         id = r#"id="test_id""#,
-        rel = r#"rel="""#,
-        target = r#"target="""#
     );
 
     assert_eq!(prepare::<Route>(), expected);
@@ -297,11 +283,9 @@ fn with_new_tab() {
     }
 
     let expected = format!(
-        "<h1>App</h1><a {href} {default} {class} {rel} {target}>Link</a>",
+        "<h1>App</h1><a {href} {default} {target}>Link</a>",
         href = r#"href="/test""#,
         default = r#"dioxus-prevent-default="""#,
-        class = r#"class="""#,
-        rel = r#"rel="""#,
         target = r#"target="_blank""#
     );
 
@@ -328,10 +312,9 @@ fn with_new_tab_external() {
     }
 
     let expected = format!(
-        "<h1>App</h1><a {href} {default} {class} {rel} {target}>Link</a>",
+        "<h1>App</h1><a {href} {default} {rel} {target}>Link</a>",
         href = r#"href="https://dioxuslabs.com/""#,
         default = r#"dioxus-prevent-default="""#,
-        class = r#"class="""#,
         rel = r#"rel="noopener noreferrer""#,
         target = r#"target="_blank""#
     );
@@ -366,12 +349,10 @@ fn with_rel() {
     }
 
     let expected = format!(
-        "<h1>App</h1><a {href} {default} {class} {rel} {target}>Link</a>",
+        "<h1>App</h1><a {href} {default} {rel}>Link</a>",
         href = r#"href="/test""#,
         default = r#"dioxus-prevent-default="onclick""#,
-        class = r#"class="""#,
         rel = r#"rel="test_rel""#,
-        target = r#"target="""#
     );
 
     assert_eq!(prepare::<Route>(), expected);