class-transformer

问题 I want to serialize a property with a different name than it has in the entity. @Entity() export class MyEntity { // This should be serialized with name_column in JSON @Column() name: string } When I call classToPlain I want the property name to be serialized to name_column : classToPlain(myEntity) // returns: {name: 'my name'} // should be: {name_column: 'my name'} 回答1: Is there a specific reason you are using json-typescript-mapper instead of class-transformer, which is natively supported

问题 I have been trying to work through the NestJs example for the Serialization Section for Mongodb using Typegoose using the class-transformer library. The example given at https://docs.nestjs.com/techniques/serialization only shows how to use serialization in TypeORM. I followed the same process for Typegoose. Here is what I have tried so far. // cat.domain.ts import { prop } from '@typegoose/typegoose'; export class Cat { @prop() name: string; @prop() age: number; @prop() breed: string; } //

来源： https://stackoverflow.com/questions/51113506/nodejs-map-dtos-to-typeorm-entities

来源： https://stackoverflow.com/questions/51113506/nodejs-map-dtos-to-typeorm-entities

问题 I'm trying to find a nice way to validate a body using DTO (using the brilliant class-validator and class-transformer libraries). It works really well, even for nested structures but in my case I'd like to have the body property based on some conditions. Example that will probably help to understand: Let's imagine my body should always have selectedCategory . Based on that field, the content could either be from category 1, which contains prop1 OR from category 2, which contains prop2 . I do