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What is the difference between the Model Validator and Validation Class?

I can do this in my model:

use Phalcon\Mvc\Model\Validator; $this->validate(new Validator\Email([ 'field' => 'email', 'message' => 'Sorry, your email is invalid.' ]));

But Why cant do this? $this->validate->appendMessage('test');

1: How would I do a custom validation and add it into there? For example if (true) { $this->validate->appendMessage('You cant do that!'); $this->validate->setFailure? }

2: What is the "field" value coming from? Is it the model::$value?

3: Then whats the difference with this https://docs.phalcon.io/en/latest/api/Phalcon_Validation.html versus https://docs.phalcon.io/en/latest/api/Phalcon_Mvc_Model_Validator.html

Does the model validation just have more features only for the models?



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Phalcon\Mvc\Model\Validator is intended to perform validations on models.

Phalcon\Validation is intended to perform validations on arbitrary data that not necessarily belongs or will be stored to/from a model. For example a form that process some data that will be used to send an email.