From b09fc03719d09edd6fe3c509f89b3ddd7f8566d0 Mon Sep 17 00:00:00 2001
From: "mergify[bot]" <37929162+mergify[bot]@users.noreply.github.com>
Date: Mon, 8 Aug 2022 17:23:01 -0400
Subject: [PATCH] chore: changelog update (backport #12859) (#12862)

---
 CHANGELOG.md       | 1 +
 x/auth/ante/fee.go | 7 +++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index d99a2eb52622..a8f95aca3868 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -45,6 +45,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Improvements
 
+* (events) [#12850](https://github.com/cosmos/cosmos-sdk/pull/12850) Add a new `fee_payer` attribute to the `tx` event that is emitted from the `DeductFeeDecorator` AnteHandler decorator.
 * (x/params) [#12724](https://github.com/cosmos/cosmos-sdk/pull/12724) Add `GetParamSetIfExists` function to params `Subspace` to prevent panics on breaking changes.
 * [#12668](https://github.com/cosmos/cosmos-sdk/pull/12668) Add `authz_msg_index` event attribute to message events emitted when executing via `MsgExec` through `x/authz`.
 * [#12697](https://github.com/cosmos/cosmos-sdk/pull/12697) Upgrade IAVL to v0.19.0 with fast index and error propagation. NOTE: first start will take a while to propagate into new model.
diff --git a/x/auth/ante/fee.go b/x/auth/ante/fee.go
index 5d83158daaa9..7c8fc510f9a6 100644
--- a/x/auth/ante/fee.go
+++ b/x/auth/ante/fee.go
@@ -117,8 +117,11 @@ func (dfd DeductFeeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bo
 	}
 
 	events := sdk.Events{
-		sdk.NewEvent(sdk.EventTypeTx, sdk.NewAttribute(sdk.AttributeKeyFee, feeTx.GetFee().String())),
-		sdk.NewEvent(sdk.EventTypeTx, sdk.NewAttribute(sdk.AttributeKeyFeePayer, deductFeesFrom.String())),
+		sdk.NewEvent(
+			sdk.EventTypeTx,
+			sdk.NewAttribute(sdk.AttributeKeyFee, fee.String()),
+			sdk.NewAttribute(sdk.AttributeKeyFeePayer, deductFeesFrom.String()),
+		),
 	}
 	ctx.EventManager().EmitEvents(events)