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Form validation for used elements

How can I validate used element of form? e.g. I have email, password in form and both have validation and in view I am using only email, after post validation happened for both.



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Accepted
answer
edited Feb '15

i bvelieve its

public function beforeValidation()
{
    // validation here with checks if field is empty
}

Can we used this function in form



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all classes has events, and all events are standardized