From a4f314fc331fde0e6431cd8e251d69dad0f2acda Mon Sep 17 00:00:00 2001
From: Daniele Bissoli <danibix95@users.noreply.github.com>
Date: Fri, 10 Jan 2025 10:47:47 +0100
Subject: [PATCH] refactor: replace logic to update mongo views (#439)

* refactor: replace logic to update mongo views

* chore: update CHANGELOG
---
 CHANGELOG.md      |  4 ++++
 lib/loadModels.js | 10 ++++++----
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2d64228e..684f0833 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Changed
+
+- overhauled Mongo view update logic to avoid requesting [`dropCollection`](https://www.mongodb.com/docs/manual/reference/privilege-actions/#mongodb-authaction-dropCollection) privilege action
+
 ## 7.2.2 - 2024-12-13
 
 ### Changed
diff --git a/lib/loadModels.js b/lib/loadModels.js
index 0f862220..6fcfab47 100644
--- a/lib/loadModels.js
+++ b/lib/loadModels.js
@@ -162,11 +162,13 @@ function collectionModelMapper(
         )
       }
 
+      // in case a view with selected name already exists, update it with the newer configuration
       if (existingCollections.includes(collectionName)) {
-        await mongoInstance
-          .db
-          .collection(collectionName)
-          .drop()
+        return mongoInstance.db.command({
+          collMod: collectionName,
+          viewOn: viewSourceCollectionName,
+          pipeline,
+        })
       }
 
       return mongoInstance