From 91b2ba30f6dd0704a362f44ba886027fb086002d Mon Sep 17 00:00:00 2001
From: jdl <jdl@crumpington.com>
Date: Sat, 16 Dec 2023 21:06:36 +0100
Subject: [PATCH] Colleciton.Has convenience function

---
 mdb/collection.go | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/mdb/collection.go b/mdb/collection.go
index 57970a8..27d06c4 100644
--- a/mdb/collection.go
+++ b/mdb/collection.go
@@ -159,6 +159,15 @@ func (c *Collection[T]) Get(tx *Snapshot, id uint64) *T {
 	return c.ByID.Get(tx, item)
 }
 
+func (c *Collection[T]) Has(tx *Snapshot, id uint64) bool {
+	if tx == nil {
+		tx = c.db.Snapshot()
+	}
+	item := new(T)
+	c.setID(item, id)
+	return c.ByID.Has(tx, item)
+}
+
 func (c *Collection[T]) Insert(tx *Snapshot, userItem *T) error {
 	if tx == nil {
 		return c.db.Update(func(tx *Snapshot) error {