How can I custom the validation rule?

[linhchelsea]

I want to validate a number that must be an integer. But I can not find that rule in this document https://docs.adonisjs.com/reference/validator/rules/alpha

[mastermunj]

You can create your own custom validation rules.

start/validationRules.ts

validator.rule('integer', (value: number, _, { pointer, arrayExpressionPointer, errorReporter }) => {
  const isValid = Number.isInteger(value);

  if (!isValid) {
    errorReporter.report(pointer, 'integer', 'Enter a valid integer value', arrayExpressionPointer);
  }
});

contracts/validator.ts

export interface Rules {
  integer(): Rule;
}

Now you can use the rule as

public schema = schema.create({
  amount: schema.number([rules.integer()]),
});

[linhchelsea]

Fantastic!

It works for me

Thank you so much <3

[arthurcvm]

@thetutlage The custom rules page is not in the new docs? I need consult this.