fix(delegate): push base-level id assignment to base payload when cre…

…ating a concrete entity

packages/runtime/src/enhancements/delegate.ts

@@ -460,8 +460,8 @@ export class DelegateProxyHandler extends DefaultPrismaProxyHandler {
     }
 
     // ensure the full nested "create" structure is created for base types
-    private ensureBaseCreateHierarchy(model: string, result: any) {
-        let curr = result;
+    private ensureBaseCreateHierarchy(model: string, args: any) {
+        let curr = args;
         let base = this.getBaseModel(model);
         let sub = this.getModelInfo(model);
 
@@ -478,6 +478,16 @@ export class DelegateProxyHandler extends DefaultPrismaProxyHandler {
                     curr[baseRelationName].create[base.discriminator] = sub.name;
                 }
             }
+
+            // Look for base id field assignments in the current level, and push
+            // them down to the base level
+            for (const idField of getIdFields(this.options.modelMeta, base.name)) {
+                if (curr[idField.name] !== undefined) {
+                    curr[baseRelationName].create[idField.name] = curr[idField.name];
+                    delete curr[idField.name];
+                }
+            }
+
             curr = curr[baseRelationName].create;
             sub = base;
             base = this.getBaseModel(base.name);

tests/regression/tests/issue-1518.test.ts

@@ -0,0 +1,31 @@
+import { loadSchema } from '@zenstackhq/testtools';
+describe('issue 1518', () => {
+    it('regression', async () => {
+        const { enhance } = await loadSchema(
+            `
+            model Activity {
+                id        String       @id @default(uuid())
+                title     String
+                type      String
+                @@delegate(type)
+                @@allow('all', true)
+            }
+
+            model TaskActivity extends Activity {
+                description String
+                @@map("task_activity")
+                @@allow('all', true)
+            }
+            `
+        );
+
+        const db = enhance();
+        await db.taskActivity.create({
+            data: {
+                id: '00000000-0000-0000-0000-111111111111',
+                title: 'Test Activity',
+                description: 'Description of task',
+            },
+        });
+    });
+});