@ApiHideProperty() makes property read-only, TypeORM can't assign values to entity

Bug report

Current behavior

When you decorate property of TypeORM entity with @ApiHideProperty(), you get following error as the property is read-only - Cannot assign to read only property 'property' of object '#<Entity>'.

Expected behavior

The property shouldn’t be read-only, so TypeORM can create class and assign values from db.

Minimal reproduction of the problem with instructions

Clone: https://github.com/nestjs/nest/tree/master/sample/05-sql-typeorm.

Install @nestjs/swagger (npm i @nestjs/swagger).

Decorate property, for example views in photo.entity.ts.

@Column('int')
@ApiHideProperty()
views: number;

Add a photo to database.

You can edit `findAll` method in service to ensure that it returns at least one photo (or just add it manually).

  async findAll(): Promise<Photo[]> {
    await this.photoRepository.save({
      name: 'test',
      description: 'test',
      filename: 'test',
      views: 99,
      isPublished: true,
    });

    return this.photoRepository.find();
  }

Running the application and navigating to localhost:3000/photo causes an error - Cannot assign to read only property 'views' of object '#<Photo>'.

What is the motivation / use case for changing the behavior?

For example, you want to hide some internal properties, like createdAt.

Environment

Nest version: 6.10.14
nestjs/swagger version: 4.1.7
TypeORM driver: pg

[kamilmysliwiec]

Fixed in 4.1.9. Thanks for reporting

[lock[bot]]

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