How i can pass fastify response schema from nest to fastify?

[femike]

May be have decorator?
May be in the nest it differently?
Or where i can pass router schema data to fastify?

For example:
In Nest

@Post()
login() {
// get user bla bla bla
user = { password: 'changeme', username: 'admin' }
const { password, ..data } = user;
return data;
}

response return { username: 'admin' }

in Fastify

fastify.route({ url: '/login', method: ["GET"],
schema: {
  response: {
    201: {
       type: 'object',
       properties: { username: {type: 'string' } }
   }
},
handler: (req, resp) {
   // get user bla bla bla
   user = { password: 'changeme', username: 'admin' }
   return resp.code(201).send(user);
}

response return { username: 'admin' } without password according to the scheme

Sorry for google translate eng.

[kamilmysliwiec]

Use the @nestjs/swagger module instead https://docs.nestjs.com/recipes/swagger

[femike]

Use the @nestjs/swagger module instead https://docs.nestjs.com/recipes/swagger

It only describe in @ApiResponse() for the swagger to show example in the swagger not filtred output.
I d like to pass scheme to fastify to filtre output response according my scheme.

[kamilmysliwiec]

Check this chapter then https://docs.nestjs.com/techniques/serialization

[femike]

Check this chapter then https://docs.nestjs.com/techniques/serialization

That's better, it works, good thanks.

[sergeyampo]

Check this chapter then https://docs.nestjs.com/techniques/serialization

It's great but fastify uses fast-json-stringify to serialize response based on a specific schema and Nest uses class-transformer, can we change default serializer?

[micalevisk]

It's great but fastify uses fast-json-stringify to serialize response based on a specific schema and Nest uses class-transformer, can we change default serializer?

You can implement your own ClassSerializerInterceptor. See https://github.com/nestjs/nest/blob/d90516640f65c12746771a722a91e48a448aac81/packages/common/serializer/class-serializer.interceptor.ts

[yantrab]

@sergeyampo How did you solve it?
Fastify has a build-in validation and serialization.
It does not make sense to use create pipe for this.