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How do you use Yii’s “Form Builder” for creating forms?

How do you use Yii’s “Form Builder” for creating forms?

Answer: Yii’s “Form Builder” can be used to create forms by following these steps:

1. Model Preparation: Define a model class that represents the data structure and validation rules for the form.

2. Form Initialization: Use `Yii::$app->controller->render()` to render the form view in a controller action.

3. Form Setup: In the view file, initiate the form using `ActiveForm`. You can create it with `ActiveForm::begin()` and `ActiveForm::end()`.

4. Form Fields: Add form fields using methods like `$form->field($model, ‘attribute’)->input()` to create input fields, text areas, checkboxes, etc.

5. Submit Handling: On form submission, validate the model in the controller and, if valid, process the data (e.g., saving to a database).

6. Error Display: Automatically handle and display validation errors using `$form->field()->error()` in the view.

This process provides an efficient way to create and manage forms in Yii applications.

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