set key and key prefix from contract field name

examples/proof_of_attendance/contract.py

@@ -6,6 +6,7 @@ def __init__(self) -> None:
         self.max_attendees = algopy.UInt64(30)
         self.asset_url = algopy.String("ipfs://QmW5vERkgeJJtSY1YQdcWU6gsHCZCyLFtM1oT9uyy2WGm8")
         self.total_attendees = algopy.UInt64(0)
+        self.box_map = algopy.BoxMap(algopy.Bytes, algopy.UInt64)
 
     @algopy.arc4.abimethod(create="require")
     def init(self, max_attendees: algopy.UInt64) -> None:
@@ -57,11 +58,10 @@ def confirm_attendance_with_box_map(self) -> None:
         minted_asset = self._mint_poa(algopy.Txn.sender)
         self.total_attendees += 1
 
-        box_map = algopy.BoxMap(type(algopy.Txn.sender.bytes), algopy.UInt64)
-        has_claimed = algopy.Txn.sender.bytes in box_map
+        has_claimed = algopy.Txn.sender.bytes in self.box_map
         assert not has_claimed, "Already claimed POA"
 
-        box_map[algopy.Txn.sender.bytes] = minted_asset.id
+        self.box_map[algopy.Txn.sender.bytes] = minted_asset.id
 
     @algopy.arc4.abimethod(readonly=True)
     def get_poa_id(self) -> algopy.UInt64:
@@ -85,8 +85,7 @@ def get_poa_id_with_box_ref(self) -> algopy.UInt64:
 
     @algopy.arc4.abimethod(readonly=True)
     def get_poa_id_with_box_map(self) -> algopy.UInt64:
-        box_map = algopy.BoxMap(type(algopy.Txn.sender.bytes), algopy.UInt64)
-        poa_id, exists = box_map.maybe(algopy.Txn.sender.bytes)
+        poa_id, exists = self.box_map.maybe(algopy.Txn.sender.bytes)
         assert exists, "POA not found"
         return poa_id
 
@@ -151,8 +150,7 @@ def claim_poa_with_box_ref(self, opt_in_txn: algopy.gtxn.AssetTransferTransactio
 
     @algopy.arc4.abimethod()
     def claim_poa_with_box_map(self, opt_in_txn: algopy.gtxn.AssetTransferTransaction) -> None:
-        box_map = algopy.BoxMap(type(algopy.Txn.sender.bytes), algopy.UInt64)
-        poa_id, exists = box_map.maybe(algopy.Txn.sender.bytes)
+        poa_id, exists = self.box_map.maybe(algopy.Txn.sender.bytes)
         assert exists, "POA not found, attendance validation failed!"
         assert opt_in_txn.xfer_asset.id == poa_id, "POA ID mismatch"
         assert opt_in_txn.fee == algopy.UInt64(0), "We got you covered for free!"

examples/proof_of_attendance/test_contract.py

@@ -28,17 +28,18 @@ def test_init(context: AlgopyTestContext) -> None:
 
 
 @pytest.mark.parametrize(
-    "confirm_attendance",
+    ("confirm_attendance", "key_prefix"),
     [
-        "confirm_attendance",
-        "confirm_attendance_with_box",
-        "confirm_attendance_with_box_ref",
-        "confirm_attendance_with_box_map",
+        ("confirm_attendance", b""),
+        ("confirm_attendance_with_box", b""),
+        ("confirm_attendance_with_box_ref", b""),
+        ("confirm_attendance_with_box_map", b"box_map"),
     ],
 )
 def test_confirm_attendance(
     context: AlgopyTestContext,
     confirm_attendance: str,
+    key_prefix: bytes,
 ) -> None:
     # Arrange
     contract = ProofOfAttendance()
@@ -49,19 +50,23 @@ def test_confirm_attendance(
     confirm()
 
     # Assert
-    assert context.get_box(context.default_creator.bytes) == algopy.op.itob(1)
+    assert context.get_box(key_prefix + context.default_creator.bytes) == algopy.op.itob(1)
 
 
 @pytest.mark.parametrize(
-    "claim_poa",
+    ("claim_poa", "key_prefix"),
     [
-        "claim_poa",
-        "claim_poa_with_box",
-        "claim_poa_with_box_ref",
-        "claim_poa_with_box_map",
+        ("claim_poa", b""),
+        ("claim_poa_with_box", b""),
+        ("claim_poa_with_box_ref", b""),
+        ("claim_poa_with_box_map", b"box_map"),
     ],
 )
-def test_claim_poa(context: AlgopyTestContext, claim_poa: str) -> None:
+def test_claim_poa(
+    context: AlgopyTestContext,
+    claim_poa: str,
+    key_prefix: bytes,
+) -> None:
     # Arrange
     contract = ProofOfAttendance()
     dummy_poa = context.any_asset()
@@ -74,7 +79,7 @@ def test_claim_poa(context: AlgopyTestContext, claim_poa: str) -> None:
         fee=algopy.UInt64(0),
         asset_amount=algopy.UInt64(0),
     )
-    context.set_box(context.default_creator.bytes, algopy.op.itob(dummy_poa.id))
+    context.set_box(key_prefix + context.default_creator.bytes, algopy.op.itob(dummy_poa.id))
 
     # Act
     claim = getattr(contract, claim_poa)