From 44208f405eb1aee2b5e3c0cbea56eab846cb4353 Mon Sep 17 00:00:00 2001
From: Damilare <dharjeezy@gmail.com>
Date: Sat, 26 Nov 2022 11:22:52 +0100
Subject: [PATCH 1/2] check if an asset exists via loose coupling

---
 frame/assets/src/impl_fungibles.rs           | 4 ++++
 frame/support/src/traits/tokens/fungibles.rs | 3 +++
 2 files changed, 7 insertions(+)

diff --git a/frame/assets/src/impl_fungibles.rs b/frame/assets/src/impl_fungibles.rs
index 6e0a9ac08ebb1..b10b8c6b10755 100644
--- a/frame/assets/src/impl_fungibles.rs
+++ b/frame/assets/src/impl_fungibles.rs
@@ -59,6 +59,10 @@ impl<T: Config<I>, I: 'static> fungibles::Inspect<<T as SystemConfig>::AccountId
 	) -> WithdrawConsequence<Self::Balance> {
 		Pallet::<T, I>::can_decrease(asset, who, amount, false)
 	}
+
+	fn asset_exists(asset: Self::AssetId) -> bool {
+		Asset::<T, I>::contains_key(asset)
+	}
 }
 
 impl<T: Config<I>, I: 'static> fungibles::InspectMetadata<<T as SystemConfig>::AccountId>
diff --git a/frame/support/src/traits/tokens/fungibles.rs b/frame/support/src/traits/tokens/fungibles.rs
index 8c370e9a0d8b5..92693618f600e 100644
--- a/frame/support/src/traits/tokens/fungibles.rs
+++ b/frame/support/src/traits/tokens/fungibles.rs
@@ -75,6 +75,9 @@ pub trait Inspect<AccountId> {
 		who: &AccountId,
 		amount: Self::Balance,
 	) -> WithdrawConsequence<Self::Balance>;
+
+	/// Determines if an `asset` exists
+	fn asset_exists(asset: Self::AssetId) -> bool;
 }
 
 /// Trait for reading metadata from a fungible asset.

From 8974d8f680cd8fafa82a0f24eab757ecfe03d692 Mon Sep 17 00:00:00 2001
From: dharjeezy <dharjeezy@gmail.com>
Date: Sun, 27 Nov 2022 01:01:32 +0100
Subject: [PATCH 2/2] Update frame/support/src/traits/tokens/fungibles.rs

Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>
---
 frame/support/src/traits/tokens/fungibles.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/frame/support/src/traits/tokens/fungibles.rs b/frame/support/src/traits/tokens/fungibles.rs
index 92693618f600e..eb6d95547a98a 100644
--- a/frame/support/src/traits/tokens/fungibles.rs
+++ b/frame/support/src/traits/tokens/fungibles.rs
@@ -76,7 +76,7 @@ pub trait Inspect<AccountId> {
 		amount: Self::Balance,
 	) -> WithdrawConsequence<Self::Balance>;
 
-	/// Determines if an `asset` exists
+	/// Returns `true` if an `asset` exists.
 	fn asset_exists(asset: Self::AssetId) -> bool;
 }