Скачать или смотреть #26 Form Validations in CodeIgniter 4

CodeIgniter 4 provides a library to validate the data. This class will help us minimize the amount of code that we will write

In this session we covered Form validations. This session contains
How to define validation rules ?
How to display all error messages in the view ?
How to display individual error messages in form?
How to define custom messages for displaying errors

validate(): by using this method we can check the validation rules. if all the rules are valid, this method returns true.

The validator object is used to display the error messages into a view

listErrors(): To display all the errors in the view

hasError(): By using this method we can check whether the error message was defined or not, if error message defined this method will returns true otherwise return empty

getError(): by using this method we can get the error message defined by the validate method