Validating 2 0 forms
If you only need to perform one type of validation (e.g.validating email addresses), you may call the validate() method of the desired validator, like the following: .You may write the validation rule like the following: Some validations can only be done on the server-side, because only the server has the necessary information.
You may create inline validators or standalone validators.
This should be done by overriding the yii\base\Model::rules() method.
The following example shows how the validation rules for the Most validators have default error messages that will be added to the model being validated when its attributes fail the validation.
When a user changes the value of an input field or submit the form, the client-side validation Java Script will be triggered.
If you want to turn off client-side validation completely, you may configure the yii\widgets\Active Form::$enable Client Validation property to be To create a validator that supports client-side validation, you should implement the yii\validators\Validator::client Validate Attribute() method which returns a piece of Java Script code that performs the validation on the client-side.
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