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If not, you may get the error messages from the yii\base\Model::$errors property.
For example, really work, you should declare validation rules for the attributes you plan to validate.
The following code shows the implementation of this validate() function.
Now we will see how we can validate our entered form data before submitting it to the web server.
If the data entered by a client was incorrect or was simply missing, the server would have to send all the data back to the client and request that the form be resubmitted with correct information.
When using these kind of components, the form fields are split into multiple regions which there is only active, visible one at any time.Below is the list of examples showing how to use Form Validation with popular wizard plugins: Form Validation supports popular frameworks which are Bootstrap, Foundation, Pure, Semantic UI and UIKit.It's designed to work with other framework including your own one.For example, the required validator will add a message "Username cannot be blank." to a model when the Some validators may support additional error messages to more precisely describe different causes of validation failures.For example, the number validator supports too Big and too Small to describe the validation failure when the value being validated is too big and too small, respectively.
This section introduces some examples demonstrating the ways to work with other frameworks and form builders.