fix: createQueryBuilder relation remove works only if using ID (typeo…

…rm#2632) (typeorm#4734)

src/query-builder/RelationRemover.ts

@@ -90,7 +90,7 @@ export class RelationRemover {
                         }),
                         ...junctionMetadata.inverseColumns.map((column, columnIndex) => {
                             const parameterName = "secondValue_" + firstColumnValIndex + "_" + secondColumnValIndex + "_" + columnIndex;
-                            parameters[parameterName] = firstColumnVal instanceof Object ? column.referencedColumn!.getEntityValue(secondColumnVal) : secondColumnVal;
+                            parameters[parameterName] = secondColumnVal instanceof Object ? column.referencedColumn!.getEntityValue(secondColumnVal) : secondColumnVal;
                             return `${column.databaseName} = :${parameterName}`;
                         })
                     ].join(" AND ");
@@ -108,4 +108,4 @@ export class RelationRemover {
         }
     }
 
-}
+}

test/github-issues/2632/entity/Category.ts

@@ -0,0 +1,18 @@
+import {Entity} from "../../../../src/decorator/entity/Entity";
+import {PrimaryGeneratedColumn} from "../../../../src/decorator/columns/PrimaryGeneratedColumn";
+import {Column} from "../../../../src/decorator/columns/Column";
+import {Post} from "./Post";
+import {ManyToMany} from "../../../../src/decorator/relations/ManyToMany";
+
+@Entity()
+export class Category {
+    @PrimaryGeneratedColumn()
+    id: number;
+
+    @Column()
+    title: string;
+
+    @ManyToMany(type => Post, post => post.categories)
+    posts: Post[];
+
+}

test/github-issues/2632/entity/Post.ts

@@ -0,0 +1,20 @@
+import {Entity} from "../../../../src/decorator/entity/Entity";
+import {PrimaryGeneratedColumn} from "../../../../src/decorator/columns/PrimaryGeneratedColumn";
+import {Column} from "../../../../src/decorator/columns/Column";
+import {Category} from "./Category";
+import {ManyToMany} from "../../../../src/decorator/relations/ManyToMany";
+import {JoinTable} from "../../../../src/decorator/relations/JoinTable";
+
+@Entity()
+export class Post {
+    @PrimaryGeneratedColumn()
+    id: number;
+
+    @Column()
+    title: string;
+
+    @ManyToMany(type => Category, category => category.posts)
+    @JoinTable()
+    categories: Category[];
+
+}

test/github-issues/2632/issue-2632.ts

@@ -0,0 +1,75 @@
+import "reflect-metadata";
+import {createTestingConnections, closeTestingConnections, reloadTestingDatabases} from "../../utils/test-utils";
+import {Connection} from "../../../src/connection/Connection";
+import {Post} from "./entity/Post";
+import {Category} from "./entity/Category";
+import {expect} from "chai";
+
+describe("github issues > #2632 createQueryBuilder relation remove works only if using ID", () => {
+
+    let connections: Connection[];
+    before(async () => connections = await createTestingConnections({
+        entities: [__dirname + "/entity/*{.js,.ts}"],
+        schemaCreate: true,
+        dropSchema: true,
+    }));
+    beforeEach(() => reloadTestingDatabases(connections));
+    after(() => closeTestingConnections(connections));
+
+    it("should add and remove relations of an entity if given a mix of ids and objects", () => Promise.all(connections.map(async connection => {
+
+        const post1 = new Post();
+        post1.title = "post #1";
+        await connection.manager.save(post1);
+
+        const post2 = new Post();
+        post2.title = "post #2";
+        await connection.manager.save(post2);
+
+        const category1 = new Category();
+        category1.title = "category #1";
+        await connection.manager.save(category1);
+
+        const category2 = new Category();
+        category2.title = "category #2";
+        await connection.manager.save(category2);
+
+        await connection
+          .createQueryBuilder()
+          .relation(Post, "categories")
+          .of(post1)
+          .add(1);
+
+        let loadedPost1 = await connection.manager.findOne(Post, 1, { relations: ["categories"] });
+        expect(loadedPost1!.categories).to.deep.include({ id: 1, title: "category #1" });
+
+        await connection
+          .createQueryBuilder()
+          .relation(Post, "categories")
+          .of(post1)
+          .remove(1);
+
+        loadedPost1 = await connection.manager.findOne(Post, 1, { relations: ["categories"] });
+        expect(loadedPost1!.categories).to.be.eql([]);
+
+        await connection
+          .createQueryBuilder()
+          .relation(Post, "categories")
+          .of(2)
+          .add(category2);
+
+        let loadedPost2 = await connection.manager.findOne(Post, 2, { relations: ["categories"] });
+        expect(loadedPost2!.categories).to.deep.include({ id: 2, title: "category #2" });
+
+        await connection
+          .createQueryBuilder()
+          .relation(Post, "categories")
+          .of(2)
+          .remove(category2);
+
+        loadedPost1 = await connection.manager.findOne(Post, 2, { relations: ["categories"] });
+        expect(loadedPost1!.categories).to.be.eql([]);
+
+    })));
+
+});