Avoiding the creation of fields that have not been inputted in TypeGraphQL

Question

Avoiding the creation of fields that have not been inputted in TypeGraphQL

@Resolver()
export class NameCardCreateResolver {
  @Mutation(() => BaseMutationResponse)
  async namecardCreate(
    @Arg("chosenSNSUrls", () => SNSInput)
    { facebook, twitter, instagram, blog, youtube }: SNSInput,
    @Arg("owner", () => NameCardOwner)
    { ownerEmail }: NameCardOwner
  ): Promise<BaseMutationResponse> {
    const response = new BaseMutationResponse();
    try {
      await NameCardModel.create({
        sns: {
          facebook,
          twitter,
          instagram,
          blog,
          youtube
        },
        owner: {
          email: ownerEmail,
        },

and also defined the SNSINPUT type as shown below:

@InputType()
export class SNSInput {
  @Field({ nullable: true, defaultValue: null })
  facebook?: string;

  @Field({ nullable: true, defaultValue: null })
  instagram?: string;

  @Field({ nullable: true, defaultValue: null })
  youtube?: string;

  @Field({ nullable: true, defaultValue: null })
  blog?: string;

  @Field({ nullable: true, defaultValue: null })
  twitter?: string;
}

although it works well, I noticed that in my MongoDB field, unnecessary null values are still being created.

View image description here

How can I prevent these unnecessary null processed sns fields from being created?

typescript mongodb graphql resolver typegraphql

Answer 1

Answer №1

To exclude a field from MongoDB, simply assign the value undefined instead of null. This will prevent the field from being included in the document.

If your typegraphql annotation includes defaultValue: null, consider removing it as this may default the field to null.

@InputType()
export class SNSInput {
  @Field({ nullable: true })
  facebook?: string;

  @Field({ nullable: true })
  instagram?: string;

  @Field({ nullable: true })
  youtube?: string;

  @Field({ nullable: true })
  blog?: string;

  @Field({ nullable: true })
  twitter?: string;
}

Alternatively, if you wish to retain null values in your input, you must explicitly replace them with undefined or delete them using delete.

Answer 2

To exclude a field from MongoDB, simply assign the value undefined instead of null. This will prevent the field from being included in the document.

If your typegraphql annotation includes defaultValue: null, consider removing it as this may default the field to null.

@InputType()
export class SNSInput {
  @Field({ nullable: true })
  facebook?: string;

  @Field({ nullable: true })
  instagram?: string;

  @Field({ nullable: true })
  youtube?: string;

  @Field({ nullable: true })
  blog?: string;

  @Field({ nullable: true })
  twitter?: string;
}

Alternatively, if you wish to retain null values in your input, you must explicitly replace them with undefined or delete them using delete.

Avoiding the creation of fields that have not been inputted in TypeGraphQL

Answer №1

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