Modify capital letters to dashed format in the ToJSON method in Nest JS

Question

Modify capital letters to dashed format in the ToJSON method in Nest JS

I am working with a method that looks like this:

@Entity()
export class Picklist extends BaseD2CEntity {
  @ApiHideProperty()
  @PrimaryGeneratedColumn()
  id: number;

  @Column({ name: 'picklist_name' })
  @IsString()
  @ApiProperty({ type: String, description: 'picklist_name' })
  picklistName: string;

  toJSON() {
    return classToPlain(this);
  }

}

Currently, when I serialize the object using myPicklist.picklist.toJSON();, I get the following result:

{ id: 7, picklistName: "status", }

Everything is correct so far. However, I now need to change the capital letter in picklistName to an underscore, similar to what is specified in the @Column decorator as picklist_name. Is there a way to achieve this?

javascript node.js typescript nestjs class-transformer

Answer 1

Answer №1

Customize Serialization Property Names

If you want to customize the property names during serialization, you can do so using class-transformer's @Expose decorator. Check out this helpful answer:

@Expose({ name: 'picklist_name' })
picklistName: string;

Utilize ClassSerializerInterceptor

Instead of manually creating a toJSON method, consider using the built-in ClassSerializerInterceptor for automatic entity serialization in your controller methods. See more details in this answer.

@UseInterceptors(ClassSerializerInterceptor)

Answer 2

Customize Serialization Property Names

If you want to customize the property names during serialization, you can do so using class-transformer's @Expose decorator. Check out this helpful answer:

@Expose({ name: 'picklist_name' })
picklistName: string;

Utilize ClassSerializerInterceptor

Instead of manually creating a toJSON method, consider using the built-in ClassSerializerInterceptor for automatic entity serialization in your controller methods. See more details in this answer.

@UseInterceptors(ClassSerializerInterceptor)

Modify capital letters to dashed format in the ToJSON method in Nest JS

Answer №1

Customize Serialization Property Names

Utilize ClassSerializerInterceptor

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