Include the supplied value in the validation errorHash that is passed to createValidationError

[fiznool]

I've found myself wanting to create a custom ValidationError that includes the value that was validated alongside the error message. For example, if I have the following JSON Schema:

{
  "type": "object",
  "properties": {
    "name": {
      "type": "string",
      "minLength": 5
    }
  }
}

And I try to validate the following:

{
  "name": "abcd"
}

I'd like the exception to contain the following information:

{
  "name": [
    {
      "message": "should be at least 5 characters",
      "keyword": "minLength", 
      "params": {
        "limit": 5
      },
      "data": "abcd"  // <-- the submitted value
    }
  ]
}

The ajv library will add a 'data' property to its error object if the verbose option is set. The implementation in Objection currently takes the message, keyword and params keys, so even if the verbose option is set via a custom Ajv instance, the data property won't be propagated to the createValidationError static method.

Would you be open to supporting this functionality, either by default or as an opt-in config flag?

Alternatively if there is another way I can achieve this goal, please let me know.

Thanks again for a great library 😄

[fiznool]

Just bumping this.

Happy to implement a PR, but don't want to do so if it's unlikely to be accepted!

[lehni]

I'd be happy to review a PR for this!

[cesumilo]

I'd be happy to review a PR for this!

Here it is 😉

[lehni]

Thanks @cesumilo !