11. Advanced Usage of Forms

In previous chapters, you've learned about form usage basics: what HTML forms are and how you define form models and form presentation in Zend Framework 3. In this chapter, you will learn some advanced form usage topics such as security form elements (CAPTCHA and CSRF), and so on.

ZF3 components covered in this chapter:

• 11.1. Form Security Elements
  • 11.1.1. CAPTCHA
    • 11.1.1.1. CAPTCHA Types
    • 11.1.1.2. CAPTCHA Form Element & View Helper
    • 11.1.1.3. Example 1: Adding Image CAPTCHA to the ContactForm
    • 11.1.1.4. Example 2: Adding a FIGlet CAPTCHA to the ContactForm
  • 11.1.2. CSRF Prevention
    • 11.1.2.1. Example: Adding a CSRF Element to Form
• 11.2. Using Validation Groups
• 11.3. Implementing Multi-Step Forms
  • 11.3.1. Enabling Sessions
  • 11.3.2. Adding RegistrationForm
  • 11.3.3. Adding RegistrationController
    • 11.3.3.1. Adding RegistrationControllerFactory
  • 11.3.4. Adding View Templates
  • 11.3.5. Adding Route
  • 11.3.6. Results
• 11.4. Summary