✨ Add: token owner before burn address (compound-finance#13)

* ✨ Add: token burner address * 🔨 PR Fix: rename prop of owner before burn
ionicprotocol · Jun 29, 2022 · 5dec587 · 5dec587
1 parent e91b61e
commit 5dec587
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diff --git a/schema.graphql b/schema.graphql
@@ -7,6 +7,8 @@ type Token @entity
   transferCount:                BigInt!
   created:                      BigInt!
   mintOrder:                    BigInt
+  # The last account to hold the token before being burned.
+  ownerBeforeBurn:              Account
 }
 
 type Account @entity

diff --git a/src/mapping.ts b/src/mapping.ts
@@ -74,6 +74,9 @@ export function handleTransfer(ev: TransferEvent): void {
     token.transferCount = BigInt.fromI32(0);
     token.created       = ev.block.timestamp
   }
+  if (to.id == ZERO_ADDRESS) {
+    token.ownerBeforeBurn = from.id;
+  }
   token.owner = to.id;
   token.transferCount += BigInt.fromI32(1);
   token.save();