fix(delegate): generated fk fields shouldn't inherit @map attribute from its origin

packages/schema/src/plugins/prisma/schema-generator.ts

@@ -442,7 +442,10 @@ export class PrismaSchemaGenerator {
 
                         const addedRel = new PrismaFieldAttribute('@relation', [
                             // use field name as relation name for disambiguation
-                            new PrismaAttributeArg(undefined, new AttributeArgValue('String', nameArg?.value || auxRelationField.name)),
+                            new PrismaAttributeArg(
+                                undefined,
+                                new AttributeArgValue('String', nameArg?.value || auxRelationField.name)
+                            ),
                             new PrismaAttributeArg('fields', fieldsArg),
                             new PrismaAttributeArg('references', referencesArg),
                         ]);
@@ -485,6 +488,9 @@ export class PrismaSchemaGenerator {
         // generate a fk field based on the original fk field
         const addedFkField = this.generateModelField(model, origForeignKey);
 
+        // `@map` attribute should not be inherited
+        addedFkField.attributes = addedFkField.attributes.filter((attr) => !('name' in attr && attr.name === '@map'));
+
         // fix its name
         const addedFkFieldName = `${dataModel.name}_${origForeignKey.name}_${concreteModel.name}`;
         addedFkField.name = `${DELEGATE_AUX_RELATION_PREFIX}_${this.truncate(addedFkFieldName)}`;

tests/regression/tests/issue-1551.test.ts

@@ -0,0 +1,26 @@
+import { loadSchema } from '@zenstackhq/testtools';
+describe('issue 1551', () => {
+    it('regression', async () => {
+        await loadSchema(
+            `
+            model User {
+                id Int @id
+                profile Profile? @relation(fields: [profileId], references: [id])
+                profileId Int? @unique @map('profile_id')
+            }
+
+            model Profile {
+                id Int @id
+                contentType String
+                user User?
+
+                @@delegate(contentType)
+            }
+
+            model IndividualProfile extends Profile {
+                name String    
+            }
+            `
+        );
+    });
+});