TTC
Theo's Typesafe Cult•3w ago
Bored Student

NestJS optional Body Fields

How can i accept a partial object as Body using NestJS 
import { ApiProperty } from '@nestjs/swagger';
import { IsOptional, IsString } from 'class-validator';

export class UpdateUserDto {
  @ApiProperty({ required: false, nullable: true })
  @IsString()
  @IsOptional()
  public name: string | null;
  @ApiProperty({ required: false, nullable: true })
  @IsString()
  @IsOptional()
  public email: string | null;
  @ApiProperty({ required: false, nullable: true })
  @IsString()
  @IsOptional()
  public password: string | null;
}
import { ApiProperty } from '@nestjs/swagger';
import { IsOptional, IsString } from 'class-validator';

export class UpdateUserDto {
  @ApiProperty({ required: false, nullable: true })
  @IsString()
  @IsOptional()
  public name: string | null;
  @ApiProperty({ required: false, nullable: true })
  @IsString()
  @IsOptional()
  public email: string | null;
  @ApiProperty({ required: false, nullable: true })
  @IsString()
  @IsOptional()
  public password: string | null;
}
  @Patch()
  @UseGuards(AuthGuard)
  @ApiOkResponse({ description: 'Updated User', type: User })
  @ApiNotFoundResponse({ description: 'No User with this id' })
  update(@Req() request, @Body() updateUserDto: UpdateUserDto) {
    console.log(updateUserDto);
    //return this.userService.updateById(request['user'].id, updateUserDto);
  }
  @Patch()
  @UseGuards(AuthGuard)
  @ApiOkResponse({ description: 'Updated User', type: User })
  @ApiNotFoundResponse({ description: 'No User with this id' })
  update(@Req() request, @Body() updateUserDto: UpdateUserDto) {
    console.log(updateUserDto);
    //return this.userService.updateById(request['user'].id, updateUserDto);
  }
when i send the request body {"name":"test","email":"test"} it prints UpdateUserDto {}, but i expect UpdateUserDto {name: "test", email: "test", password: null} what am i doing wrong ??
1 Reply
Bored Student
Bored StudentOP•3w ago
import { PartialType } from '@nestjs/mapped-types';
import { CreateUserDto } from './CreateUserDto';

export class UpdateUserDto extends PartialType(CreateUserDto) {}
import { PartialType } from '@nestjs/mapped-types';
import { CreateUserDto } from './CreateUserDto';

export class UpdateUserDto extends PartialType(CreateUserDto) {}
I found this option, but it doesn't work either.

Did you find this page helpful?