fix some bugs

async-graphql-derive/src/args.rs

@@ -555,6 +555,7 @@ pub struct InterfaceField {
     pub ty: Type,
     pub args: Vec<InterfaceFieldArgument>,
     pub deprecation: Option<String>,
+    pub context: bool,
 }
 
 impl InterfaceField {
@@ -565,9 +566,13 @@ impl InterfaceField {
         let mut ty = None;
         let mut args = Vec::new();
         let mut deprecation = None;
+        let mut context = false;
 
         for meta in &ls.nested {
             match meta {
+                NestedMeta::Meta(Meta::Path(p)) if p.is_ident("context") => {
+                    context = true;
+                }
                 NestedMeta::Meta(Meta::NameValue(nv)) => {
                     if nv.path.is_ident("name") {
                         if let syn::Lit::Str(lit) = &nv.lit {
@@ -642,6 +647,7 @@ impl InterfaceField {
             ty: ty.unwrap(),
             args,
             deprecation,
+            context,
         })
     }
 }

async-graphql-derive/src/interface.rs

@@ -7,8 +7,6 @@ use proc_macro2::{Ident, Span};
 use quote::quote;
 use syn::{Data, DeriveInput, Error, Fields, Result, Type};
 
-// todo: Context params
-
 pub fn generate(interface_args: &args::Interface, input: &DeriveInput) -> Result<TokenStream> {
     let crate_name = get_crate_name(interface_args.internal);
     let ident = &input.ident;
@@ -52,14 +50,14 @@ pub fn generate(interface_args: &args::Interface, input: &DeriveInput) -> Result
                 }
             });
             registry_types.push(quote! {
-                <#p as async_graphql::GQLType>::create_type_info(registry);
-                registry.add_implements(&<#p as GQLType>::type_name(), #gql_typename);
+                <#p as #crate_name::GQLType>::create_type_info(registry);
+                registry.add_implements(&<#p as #crate_name::GQLType>::type_name(), #gql_typename);
             });
             possible_types.push(quote! {
-                <#p as async_graphql::GQLType>::type_name().to_string()
+                <#p as #crate_name::GQLType>::type_name().to_string()
             });
             inline_fragment_resolvers.push(quote! {
-                if name == <#p as async_graphql::GQLType>::type_name() {
+                if name == <#p as #crate_name::GQLType>::type_name() {
                     if let #ident::#enum_name(obj) = self {
                         #crate_name::do_resolve(ctx, obj, result).await?;
                     }
@@ -82,6 +80,7 @@ pub fn generate(interface_args: &args::Interface, input: &DeriveInput) -> Result
         ty,
         args,
         deprecation,
+        context,
     } in &interface_args.fields
     {
         let method_name = Ident::new(
@@ -94,6 +93,11 @@ pub fn generate(interface_args: &args::Interface, input: &DeriveInput) -> Result
         let mut get_params = Vec::new();
         let mut schema_args = Vec::new();
 
+        if *context {
+            decl_params.push(quote! { ctx: &#crate_name::Context<'_> });
+            use_params.push(quote! { ctx });
+        }
+
         for InterfaceFieldArgument {
             name,
             desc,
@@ -103,7 +107,7 @@ pub fn generate(interface_args: &args::Interface, input: &DeriveInput) -> Result
         {
             let ident = Ident::new(name, Span::call_site());
             decl_params.push(quote! { #ident: #ty });
-            use_params.push(ident.clone());
+            use_params.push(quote! { #ident });
 
             let param_default = match &default {
                 Some(default) => {
@@ -206,15 +210,15 @@ pub fn generate(interface_args: &args::Interface, input: &DeriveInput) -> Result
         }
 
         impl #generics #crate_name::GQLType for #ident #generics {
-            fn type_name() -> Cow<'static, str> {
-                Cow::Borrowed(#gql_typename)
+            fn type_name() -> std::borrow::Cow<'static, str> {
+                std::borrow::Cow::Borrowed(#gql_typename)
             }
 
             fn create_type_info(registry: &mut #crate_name::registry::Registry) -> String {
                 registry.create_type::<Self, _>(|registry| {
                     #(#registry_types)*
 
-                    async_graphql::registry::Type::Interface {
+                    #crate_name::registry::Type::Interface {
                         name: #gql_typename,
                         description: #desc,
                         fields: vec![#(#schema_fields),*],

examples/starwars/model.rs

@@ -1,6 +1,4 @@
 use super::StarWars;
-use async_graphql::GQLType;
-use std::borrow::Cow;
 
 #[async_graphql::Enum(desc = "One of the films in the Star Wars Trilogy")]
 #[allow(non_camel_case_types)]
@@ -148,8 +146,6 @@ impl QueryRoot {
     }
 }
 
-////////////////////////////////////////////////////////////////////////////////////////////////
-
 #[async_graphql::Interface(
     field(name = "id", type = "&str"),
     field(name = "name", type = "&str"),

src/resolver.rs

@@ -73,8 +73,6 @@ impl<'a, T: GQLObject + Send + Sync> Resolver<'a, T> {
                                     self.result,
                                 )
                                 .await?;
-                        } else {
-                            todo!()
                         }
                     }
                 }