How to provide custom model validation message in Sails.js?

Question

How to provide custom model validation message in Sails.js?

The validation messages returned by Sails.js is not user friendly so I wanted to provide a custom validat

Answer 1

I am using sails-hook-validation

And made some improvements in responses/badRequest.js

.....
// If the user-agent wants JSON, always respond with JSON
if (req.wantsJSON) {
    if (data.code == 'E_VALIDATION' && data.Errors) {
        return res.jsonx(data.Errors);
    }
    return res.jsonx(data);
}
.....

Answer 2

Since Sails.js doesn't yet support using custom model validation messages, we can use these solutions:

1) @johnkevinmbasco's solution

2) @sfb_'s solution

3) @rifats solution

Answer 3

I came up with modifying the badRequest response to overwrite the errors globally:

/config/validationMessages.js

module.exports.validationMessages = {
  password: 'password and passwordConfirm do not match'
};

api/responses/badRequest.js

...
// Convert validation messages
if(data && data.code !== 'E_VALIDATION') {
  _.forEach(data.invalidAttributes, function(errs, fld) {
    data.invalidAttributes[fld] = errs.map(function(err) {
      if(sails.config.validationMessages[err.rule]) {
        err.message = sails.config.validationMessages[err.rule];
      }
      return err;
    });
  });
}
...