fix

optionalize-derive/src/lib.rs

@@ -73,7 +73,7 @@ fn derive_impl(input: syn::DeriveInput) -> proc_macro2::TokenStream {
                 #name: value.#name.ok_or(::optionalize::MissingRequiredField(stringify!(#name)))?.try_into()?
             },
             (true, true) => quote! {
-                #name: value.#name.try_into()?
+                #name: value.#name.map(|val| val.try_into()).transpose().ok().flatten()
             },
         }
     });

src/main.rs

@@ -1,14 +1,17 @@
 use optionalize::Optionalize;
 use validator::Validate;
 
-#[derive(Validate, Optionalize)]
+#[derive(Optionalize, Validate)]
 struct Foo {
     #[validate(nested)]
     #[opt(name = BarOpt)]
     bar: Bar,
+    #[validate(nested)]
+    #[opt(name = BarOpt)]
+    bar2: Option<Bar>,
 }
 
-#[derive(Validate, Optionalize)]
+#[derive(Optionalize, Validate)]
 struct Bar {
     id: u16,
 }