Not getting custom error message when using .messages()

[Juansu01]

Support plan

• is this issue currently blocking your project? (no):
• is this issue affecting a production system? (no):

  Context

• node version: 18.12.1
• module version: 17.9.2
• environment (e.g. node, browser, native): Node
• used with (e.g. hapi application, another framework, standalone, ...):This is a hapi app and I'm using Joi for validation
• any other relevant information:

  How can we help?

  I'm validating a parameter inside the path, and I want to send this message as a response whenever I get a negative id "Id must be positive." I have set the custom message inside like this .messages({"number.positive":"Id must be positive"}) but whenever the server gets a negative id, it returns the default "Invalid request params input" message. Is the schema wrong? Here's the full schema. I also know I'm using the right error code, I got it after logging it from a function I passed to .error()

  validate: {
      params: Joi.object({
        id: Joi.number()
        .positive()
        .messages({
          "number.positive":
            "Id must be positive.",
        })
      })
    }

  I'm also validating the payload from a separate route, and it works, but I don't know why it does work here.

  validate: {
      payload: Joi.object({
        category: Joi.string()
          .allow("withdraw", "deposit", "winning", "bet")
          .messages({
            "any.only":
              "Category can only be: withdraw, deposit, winning, bet",
          })
          .required(),
        amount: Joi.number().min(1).max(200).required(),
        status: Joi.string(),
      }),
    },

[Marsup]

That's not a joi issue but likely a hapi misuse. hapi prevents echo attacks by default, so it hides validation errors behind a generic one. If you know you're safe, you can throw the real error in a failAction: https://runkit.com/embed/nehziyxjalau

[Juansu01]

I see, thank you so much, I got the expected behavior