Support of Setting dynamic validation message from validator.

[snovakovic]

Consider simplified code from below

model.defineValidator('emailValidator', function (value) {
    return new Promise((resolve) => {
        service.checkEmail(value).then((response) => {
            resolve(resp.isValid); // Resolving model to valid/invalid

            // Is there a way to apply this dynamic message??
            // If we use applyErrors from here it's overridden with emailValidator message.
            console.log(response.message);
        });
    });
});

// Model definition
        model.defineField('email', {
            type: 'String',
            validate: [
                {
                    'validator': 'presence',
                    'message': 'Must enter email'
                },
                {
                    'validator': 'stringEmail',
                    'message': 'Must be an email'
                },
                {
                    'validator': 'emailValidator',
                    'message': 'required' // Can this be sett to message retuned from API inside of emailValidator function??
                }
            ]
        });

     

@xpepermint is there any plan to add this feature in future releases?

[xpepermint]

Hey @snovakovic, unfortunately this is not possible. Yesterday my team had a discussion on this and we concluded that the proposal is against our no-magic policy and does not follow single responsibility principle. A validator should always return boolean and should always validate exactly one thing. If you need to validate two different cases, you need to define 2 validators. Btw, note that you can use variables within a message - maybe this can help.

Please check how ValidatableJS and HandleableJS work. Maybe you get an idea on how to resolve your problem.

[dailyraisin]

What about overloading message to act as a string or function that returns a string?

[xpepermint]

@dailyraisin that sounds reasonable. Do you have a good case for that?