fix: filter by association field with underscored (#1537)

* fix: filter by association field with underscored

* fix: test

packages/core/database/src/__tests__/filter.test.ts

@@ -0,0 +1,60 @@
+import Database from '../database';
+import { mockDatabase } from '../mock-database';
+
+describe('filter', () => {
+  let db: Database;
+
+  beforeEach(async () => {
+    db = mockDatabase();
+
+    await db.clean({ drop: true });
+  });
+
+  afterEach(async () => {
+    await db.close();
+  });
+
+  it('should filter by association field', async () => {
+    const UserCollection = db.collection({
+      name: 'users',
+      fields: [
+        { type: 'string', name: 'name' },
+        { type: 'hasMany', name: 'posts' },
+      ],
+    });
+
+    const PostCollection = db.collection({
+      name: 'posts',
+      fields: [
+        { type: 'string', name: 'title' },
+        { type: 'belongsTo', name: 'user' },
+      ],
+    });
+
+    await db.sync();
+
+    const user = await UserCollection.repository.create({
+      values: {
+        name: 'John',
+        posts: [
+          {
+            title: 'p1',
+          },
+          {
+            title: 'p2',
+          },
+        ],
+      },
+    });
+
+    const response = await UserCollection.repository.find({
+      filter: {
+        'posts.createdAt': {
+          $dateOn: user.get('createdAt'),
+        },
+      },
+    });
+
+    expect(response).toHaveLength(1);
+  });
+});

packages/core/database/src/filter-parser.ts

@@ -178,7 +178,7 @@ export default class FilterParser {
           origins.push(attr);
           // if it is target model attribute
           if (target.rawAttributes[attr]) {
-            associationKeys.push(attr);
+            associationKeys.push(target.rawAttributes[attr].field || attr);
             target = null;
           } else if (target.associations[attr]) {
             // if it is target model association (nested association filter)