pass run-time context to custom-validator and pass the results to the message

Hi I created a custom decorator validator, and I’m facing 2 issues

1. I need to pass context in run-time (that contains session details). something like validate(myClass, context)
2. After I validate and found issues, I want to send the details in the message. can I pass a variable between “validate” and “defaultMessage”?

This is what I currently did, but it doesn’t work:

type _ValidationOptions = ValidationOptions & {ctx: Context}

export function IsRuleValid(validationOptions?: _ValidationOptions) {
    const _errors: string[] = []
    return function(object: Object, propertyName: string) {
        registerDecorator({
            name: 'IsRuleValid',
            target: object.constructor,
            propertyName: propertyName,
            options: validationOptions,
            validator: {
                validate: async (value: any, args: ValidationArguments) => {
                    const errors = await validate(value, validationOptions?.ctx)
                    _errors.concat(errors)
                    return errors.length === 0
                },
                defaultMessage(args: ValidationArguments): string {
                    return _errors.join()
                },
            },
        })
    }
}

and call it like this:

const errors = await validate(data, {forbidUnknownValues: true, ctx: ctx})

The actual value and args are from the decorator and not from the original call. I need it somehow to pass globally.

[ardyfeb]

https://github.com/typestack/class-transformer/issues/912

[miqdadamirali]

Any updates on this? Possible work arounds?