Function: ResolveField()

function ResolveField(typeFn?, options?): MethodDecorator;

Defined in: packages/apollo/src/decorators/field-resolver.decorator.ts:68

Decorator for a field resolver. Used to resolve individual fields of a type.

Parameters

Parameter	Type	Description
typeFn?	| string | (() => unknown) | FieldResolverOptions	Return type factory, options object, or field name.
options?	FieldResolverOptions	Field resolver options when typeFn is a function.

Returns

MethodDecorator

Example

@Resolver('User')
class UserResolver {
  @FieldResolver()
  async posts(@Parent() user: User) {
    return this.postService.findByUserId(user.id);
  }

  @FieldResolver(() => [Post])
  async posts(@Parent() user: User) {
    return this.postService.findByUserId(user.id);
  }

  @FieldResolver('fullName')
  async getFullName(@Parent() user: User) {
    return `${user.firstName} ${user.lastName}`;
  }

  @FieldResolver({ name: 'avatar', nullable: true, description: 'User avatar URL' })
  async getAvatar(@Parent() user: User) {
    return user.avatarUrl;
  }
}