fix(delegate): orderBy with base field doesn't work when the clause is an array

packages/runtime/src/enhancements/node/delegate.ts

@@ -93,7 +93,7 @@ export class DelegateProxyHandler extends DefaultPrismaProxyHandler {
 
         if (args.orderBy) {
             // `orderBy` may contain fields from base types
-            this.injectWhereHierarchy(this.model, args.orderBy);
+            enumerate(args.orderBy).forEach((item) => this.injectWhereHierarchy(model, item));
         }
 
         if (this.options.logPrismaQuery) {
@@ -206,7 +206,9 @@ export class DelegateProxyHandler extends DefaultPrismaProxyHandler {
                     if (fieldValue !== undefined) {
                         if (fieldValue.orderBy) {
                             // `orderBy` may contain fields from base types
-                            this.injectWhereHierarchy(fieldInfo.type, fieldValue.orderBy);
+                            enumerate(fieldValue.orderBy).forEach((item) =>
+                                this.injectWhereHierarchy(fieldInfo.type, item)
+                            );
                         }
 
                         if (this.injectBaseFieldSelect(model, field, fieldValue, args, kind)) {
@@ -1037,7 +1039,7 @@ export class DelegateProxyHandler extends DefaultPrismaProxyHandler {
         }
 
         if (args.orderBy) {
-            this.injectWhereHierarchy(this.model, args.orderBy);
+            enumerate(args.orderBy).forEach((item) => this.injectWhereHierarchy(this.model, item));
         }
 
         if (args.where) {

tests/regression/tests/issue-1755.test.ts

@@ -0,0 +1,61 @@
+import { loadSchema } from '@zenstackhq/testtools';
+
+describe('issue 1755', () => {
+    it('regression', async () => {
+        const { enhance } = await loadSchema(
+            `
+            model User {
+                id          Int     @id @default(autoincrement())
+                contents   Content[]
+            }
+
+            model Content {
+                id Int @id @default(autoincrement())
+                createdAt DateTime @default(now())
+                user User @relation(fields: [userId], references: [id])
+                userId Int
+                contentType String
+                @@delegate(contentType)
+            }
+
+            model Post extends Content {
+                title String
+            }
+
+            model Video extends Content {
+                name String
+                duration Int
+            }
+            `,
+            { enhancements: ['delegate'] }
+        );
+
+        const db = enhance();
+        const user = await db.user.create({ data: {} });
+        const now = Date.now();
+        await db.post.create({
+            data: { title: 'post1', createdAt: new Date(now - 1000), user: { connect: { id: user.id } } },
+        });
+        await db.post.create({
+            data: { title: 'post2', createdAt: new Date(now), user: { connect: { id: user.id } } },
+        });
+
+        // scalar orderBy
+        await expect(db.post.findFirst({ orderBy: { createdAt: 'desc' } })).resolves.toMatchObject({
+            title: 'post2',
+        });
+
+        // array orderBy
+        await expect(db.post.findFirst({ orderBy: [{ createdAt: 'desc' }] })).resolves.toMatchObject({
+            title: 'post2',
+        });
+
+        // nested orderBy
+        await expect(
+            db.user.findFirst({ include: { contents: { orderBy: [{ createdAt: 'desc' }] } } })
+        ).resolves.toMatchObject({
+            id: user.id,
+            contents: [{ title: 'post2' }, { title: 'post1' }],
+        });
+    });
+});