git.delta.rocks / unique-network / refs/commits / 3def18a6dc97

--- a/pallets/fungible/src/lib.rs
+++ b/pallets/fungible/src/lib.rs
@@ -285,7 +285,11 @@
 		spender: &T::CrossAccountId,
 		amount: u128,
 	) {
-		<Allowance<T>>::insert((collection.id, owner, spender), amount);
+		if amount == 0 {
+			<Allowance<T>>::remove((collection.id, owner, spender));
+		} else {
+			<Allowance<T>>::insert((collection.id, owner, spender), amount);
+		}
 
 		collection.log_infallible(ERC20Events::Approval {
 			owner: *owner.as_eth(),

467		token: TokenId,467		token: TokenId,
468		amount: u128,468		amount: u128,
469	) {469	) {
470		if amount == 0 {
471			<Allowance<T>>::remove((collection.id, token, sender, spender));
472		} else {
470		<Allowance<T>>::insert((collection.id, token, sender, spender), amount);473			<Allowance<T>>::insert((collection.id, token, sender, spender), amount);
474		}
471		// TODO: ERC20 approval event475		// TODO: ERC20 approval event
472		<PalletCommon<T>>::deposit_event(CommonEvent::Approved(476		<PalletCommon<T>>::deposit_event(CommonEvent::Approved(
473			collection.id,477			collection.id,