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Developer Hooks Overview ​

FluentBooking is built on an extensible architecture, offering hundreds of WordPress Actions and Filters that allow you to customize almost every aspect of the plugin without modifying the core files.

Action Hooks ​

Actions allow you to "hook" into specific events during the FluentBooking lifecycle and execute your own custom code. They are perfect for triggering side effects like:

  • Syncing booking data with an external CRM.
  • Triggering custom notifications or SMS.
  • Logging activity to a third-party analytics service.

Example Action Hook ​

php
add_action('fluent_booking/after_booking_scheduled', function($booking, $calendar_event) {
    // Execute custom logic after a booking is successfully saved
}, 10, 2);

Browse Action Hooks Reference

Filter Hooks ​

Filters allow you to intercept and modify data before it is saved to the database or displayed on the frontend. They are ideal for:

  • Adding custom fields to the booking form.
  • Modifying availability rules on the fly.
  • Changing the content of emails or confirmation messages.

Example Filter Hook ​

php
add_filter('fluent_booking/available_slots_for_view', function($slots, $event, $calendar, $tz, $duration) {
    // Dynamically remove specific slots based on your own logic
    return $slots;
}, 10, 5);

Browse Filter Hooks Reference

Why Extend with Hooks? ​

🔋 Batteries Included ​

FluentBooking provides hooks for almost everything — from UI rendering in the admin to payment processing in the background.

🛡️ Future-Proof ​

By using hooks instead of modifying plugin files, your customizations remain intact even after you update FluentBooking to the latest version.

🧩 Plugin Interoperability ​

Hooks allow other plugins to interact seamlessly with FluentBooking, enabling a rich ecosystem of integrations (like FluentCRM, Fluent Boards, etc.).

Hook Naming Standards ​

Most FluentBooking hooks follow a consistent naming pattern:

  • Namespace: All hooks are prefixed with fluent_booking/.
  • Timing: Prefixes like before_ or after_ indicate exactly when the hook fires relative to the event.
  • Dynamic Hooks: Some hooks include dynamic segments like {key} (e.g., fluent_booking/integration_notify_{key}).

Getting Started ​

To start using hooks, you can add your custom functions to your theme's functions.php file or create a custom "glue" plugin.

  1. Explore Action Hooks for event-driven logic.
  2. Explore Filter Hooks for data-driven customizations.