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nixphp/form

Form handling done the NixPHP way — minimal, secure, and intuitive.

This plugin provides form memory helpers and CSRF protection for your NixPHP application. It integrates seamlessly and requires no configuration.

🧩 Part of the official NixPHP plugin collection. Install it when you need to handle form input and secure POST requests — nothing more.

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📦 Features

• ✅ Form input memory: preserve user data between requests
• ✅ CSRF protection: validated automatically before controller calls
• ✅ Works out of the box, no configuration needed
• ✅ Clean view helpers for error display
• ✅ Registers its listener via plugin bootstrap

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📥 Installation

composer require nixphp/form

That’s it. The plugin will be autoloaded and ready to use.

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🚀 Usage

🧠 Preserve user input: memory()

Use the memory() helper in your views to repopulate form fields:

<input type="text" name="email" value="<?= memory('email') ?>">

It automatically remembers the previous input after validation or redirects.

You can also check for general errors using:

<?php if (formError('email')): ?>
    <p class="error"><?= formError('email') ?></p>
<?php endif; ?>

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🛡️ CSRF Protection

CSRF validation is triggered automatically for POST, PUT, and DELETE requests (unless the request contains an Authorization header).

To protect your forms, include a CSRF token:

<form method="post">
    <input type="hidden" name="_csrf" value="<?= guard()->csrf()->generate() ?>">
    <!-- other fields -->
</form>

This will be validated before any controller logic is executed.

If the token is missing or invalid, a 400 error is returned.

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🔍 Internals

• The plugin registers a listener to the controller.calling event to validate CSRF tokens.
• It also extends the guard() service to include a csrf() method.
• View helpers like formError() and memory() are automatically available.

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✅ Requirements

• nixphp/framework >= 1.0
• nixphp/session (required for CSRF and memory state)

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📄 License

MIT License.