英文:
How to change the format of NestJS controller/class-validator error messages showing which field each message belongs to?
问题
The NestJS controller, along with the class-validator, currently returns an error message like this:
{statusCode: 422,message: [ 'Name is required', 'Email is required' ],error: 'Unprocessable Entity'}
But I would like to bind each message to its related property like this:
{statusCode: 422,message: { name: 'Name is required', email: 'Email is required' },error: 'Unprocessable Entity'}}My DTO:```typescriptimport { IsNotEmpty } from 'class-validator';export class CreateUserRequestDTO {@IsNotEmpty({ message: 'Name is required' })name: string;@IsNotEmpty({ message: 'Email is required' })email: string;}
How could I change the NestJS controller/class-validator errors to return messages like this?
英文:
The NestJS controller, along with the class-validator, currently returns an error message like this:
{statusCode: 422,message: [ 'Name is required', 'Email is required' ],error: 'Unprocessable Entity'}
But I would like to bind each message to its related property like this:
{statusCode: 422,message: { name: 'Name is required', email: 'Email is required' },error: 'Unprocessable Entity'}
My DTO:
import { IsNotEmpty } from 'class-validator';export class CreateUserRequestDTO {@IsNotEmpty({ message: 'Name is required' })name: string;@IsNotEmpty({ message: 'Email is required' })email: string;}
How could I change the NestJS controller/class-validator errors to return messages like this?
答案1
得分: 5
The response for validation errors can be modified by passing exceptionFactory to the ValidationPipe options.
查看示例实现：
app.useGlobalPipes(new ValidationPipe({exceptionFactory: (errors) => {return new UnprocessableEntityException({statusCode: 422,error: 'Unprocessable Entity',message: errors.reduce((acc, e) => ({...acc,[e.property]: Object.values(e.constraints),}),{},),});},}),);
英文:
The response for validation errors can be modified by passing exceptionFactory to the ValidationPipe options.
https://docs.nestjs.com/techniques/validation
See example implementation:
app.useGlobalPipes(new ValidationPipe({exceptionFactory: (errors) => {return new UnprocessableEntityException({statusCode: 422,error: 'Unprocessable Entity',message: errors.reduce((acc, e) => ({...acc,[e.property]: Object.values(e.constraints),}),{},),});},}),);
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