I am wondering if there's a way to create a dto to validate array of object?
Example array:
[
{
"name": "Tag 1",
"description": "This is the first tag"
},
{
"name": "Tag 2",
"description": "This is the second tag"
}
]
At the moment I have this, while it works, it isn't what I am after.
export class Tags {
@ApiProperty({
description: 'The name of the tag',
example: 'Tag 1',
required: true
})
@IsString()
@MaxLength(30)
@MinLength(1)
name: string;
@ApiProperty({
description: 'The description of the tag',
example: 'This is the first tag',
required: true
})
@IsString()
@MinLength(3)
description: string;
}
export class CreateTagDto {
@ApiProperty({ type: [Tags] })
@Type(() => Tags)
@ArrayMinSize(1)
@ValidateNested({ each: true })
tags: Tags[];
}
Just use ParseArrayPipe:
Update your Controller:
@Post()
createExample(@Body(new ParseArrayPipe({ items: Tags, whitelist: true })) body: Tags[]) {
...
}
Ensure to have items and whitelist set.
Update your DTO:
import { IsString, Length } from "class-validator";
export class Tags {
@IsString()
@Length(1, 30)
name: string;
@IsString()
@Length(3)
description: string;
}