Companion for #13349 (#2217)

* Companion for #13349

* Add missing line

* Cargo.lock

---------

Co-authored-by: parity-processbot <>

cumulus/parachains/runtimes/assets/westmint/Cargo.toml

@@ -27,6 +27,7 @@ pallet-authorship = { git = "https://github.com/paritytech/substrate", default-f
 pallet-balances = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
 pallet-multisig = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
 pallet-nfts = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+pallet-nfts-runtime-api = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
 pallet-proxy = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
 pallet-session = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
 pallet-timestamp = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
@@ -143,6 +144,7 @@ std = [
 	"pallet-balances/std",
 	"pallet-multisig/std",
 	"pallet-nfts/std",
+	"pallet-nfts-runtime-api/std",
 	"pallet-proxy/std",
 	"pallet-session/std",
 	"pallet-timestamp/std",

cumulus/parachains/runtimes/assets/westmint/src/lib.rs

@@ -49,7 +49,10 @@ use frame_support::{
 	construct_runtime,
 	dispatch::DispatchClass,
 	parameter_types,
-	traits::{AsEnsureOriginWithArg, ConstU32, ConstU64, ConstU8, InstanceFilter},
+	traits::{
+		tokens::nonfungibles_v2::Inspect, AsEnsureOriginWithArg, ConstU32, ConstU64, ConstU8,
+		InstanceFilter,
+	},
 	weights::{ConstantMultiplier, Weight},
 	PalletId, RuntimeDebug,
 };
@@ -799,6 +802,50 @@ impl_runtime_apis! {
 		}
 	}
 
+	impl pallet_nfts_runtime_api::NftsApi<Block, AccountId, u32, u32> for Runtime {
+		fn owner(collection: u32, item: u32) -> Option<AccountId> {
+			<Nfts as Inspect<AccountId>>::owner(&collection, &item)
+		}
+
+		fn collection_owner(collection: u32) -> Option<AccountId> {
+			<Nfts as Inspect<AccountId>>::collection_owner(&collection)
+		}
+
+		fn attribute(
+			collection: u32,
+			item: u32,
+			key: Vec<u8>,
+		) -> Option<Vec<u8>> {
+			<Nfts as Inspect<AccountId>>::attribute(&collection, &item, &key)
+		}
+
+		fn custom_attribute(
+			account: AccountId,
+			collection: u32,
+			item: u32,
+			key: Vec<u8>,
+		) -> Option<Vec<u8>> {
+			<Nfts as Inspect<AccountId>>::custom_attribute(
+				&account,
+				&collection,
+				&item,
+				&key,
+			)
+		}
+
+		fn system_attribute(
+			collection: u32,
+			item: u32,
+			key: Vec<u8>,
+		) -> Option<Vec<u8>> {
+			<Nfts as Inspect<AccountId>>::system_attribute(&collection, &item, &key)
+		}
+
+		fn collection_attribute(collection: u32, key: Vec<u8>) -> Option<Vec<u8>> {
+			<Nfts as Inspect<AccountId>>::collection_attribute(&collection, &key)
+		}
+	}
+
 	impl pallet_transaction_payment_rpc_runtime_api::TransactionPaymentApi<Block, Balance> for Runtime {
 		fn query_info(
 			uxt: <Block as BlockT>::Extrinsic,