🐛 fix 404 on patch call

README.md

@@ -298,7 +298,7 @@ For more information on MongoDB's collation feature, visit the [collation refere
 
 This adapter includes support to enable database transaction to rollback the persisted records for any error occured for a api call. This requires  [Mongo-DB v4.x](https://docs.mongodb.com/manual/) installed and [replica-set](https://linode.com/docs/databases/mongodb/create-a-mongodb-replica-set/#start-replication-and-add-members) enabled.
 
-Start working with transactin enabled by adding the following lines in `app.hooks.js` or `<any-service>.hooks.js`.
+Start working with transaction enabled by adding the following lines in `app.hooks.js` or `<any-service>.hooks.js`.
 
 ```js
 const TransactionManager = require('feathers-mongoose').TransactionManager;

lib/service.js

@@ -224,14 +224,14 @@ class Service extends AdapterService {
 
   _patch (id, data, params = {}) {
     const { query } = this.filterQuery(params);
-    const mapIds = data => data.map(current => current[this.id]);
+    const mapIds = data => Array.isArray(data) ? data.map(current => current[this.id]) : [data[this.id]];
 
     // By default we will just query for the one id. For multi patch
     // we create a list of the ids of all items that will be changed
     // to re-query them after the update
-    const ids = id === null ? this._find(Object.assign({}, params, {
+    const ids = this._getOrFind(id, Object.assign({}, params, {
       paginate: false
-    })).then(mapIds) : Promise.resolve([id]);
+    })).then(mapIds);
 
     // Handle case where data might be a mongoose model
     if (typeof data.toObject === 'function') {
@@ -268,7 +268,7 @@ class Service extends AdapterService {
         const { query: { $populate } = {} } = params;
         // Create a new query that re-queries all ids that
         // were originally changed
-        const updatedQuery = (idList.length && id === null) ? { [this.id]: { $in: idList } } : params.query;
+        const updatedQuery = { [this.id]: { $in: idList } };
         const findParams = Object.assign({}, params, {
           paginate: false,
           query: $populate ? Object.assign(updatedQuery, { $populate }) : updatedQuery
@@ -286,6 +286,9 @@ class Service extends AdapterService {
             if (options.writeResult) {
               return writeResult;
             }
+            if ('upserted' in writeResult) {
+              return this._getOrFind(id, Object.assign({}, params, { query: { [this.id]: { $in: writeResult.upserted.map(doc => doc._id) } } }, { paginate: false }));
+            }
             return this._getOrFind(id, findParams);
           });
       }).then(select(params, this.id)).catch(errorHandler);