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Example code of justinholtweb/craft-owl

Informations about the package craft-owl

Owl 🦉

A comprehensive events and calendar plugin for Craft CMS 5 — recurrence, multisite, ICS feeds, a frontend query API, GraphQL, and native Commerce ticketing.

Owl is a maintained, fairly-priced alternative to Solspace Calendar: the recurrence, ICS, and front-end submission features other plugins paywall are included in the free Lite edition, and the Pro edition ($149) adds first-class Craft Commerce ticketing.

Requirements

Editions

Lite (free) Pro
Event element, unlimited calendars, per-calendar field layouts ✓ ✓
Recurrence (RRULE) + exceptions + single-occurrence overrides ✓ ✓
Month/week/day/list views, FullCalendar demo templates ✓ ✓
Twig query API + GraphQL ✓ ✓
ICS export + subscription feeds ✓ ✓
Front-end event submission ✓ ✓
Multisite ✓ ✓
Commerce ticketing (tickets, ticket types, capacity) — ✓

Architecture

Owl stores each event's canonical RRULE and materialises occurrences into an indexed table (generated to a rolling horizon by a queue job), so calendar range queries and pagination are plain, fast SQL — and per-occurrence ticketing/inventory has a real row to attach to. See PLAN.md for the full design.

The recurrence engine (src/recurrence) is deliberately framework-agnostic and unit-tested in isolation, including DST spring-forward/fall-back correctness.

Front-end

Query events in Twig:

Feed a JS calendar (FullCalendar) from the JSON endpoint, which returns only the occurrences overlapping the requested range:

Subscribe to or download ICS:

Tickets (Pro)

With the Pro edition and Craft Commerce installed, events can sell tickets. Enable "Sell tickets" on a calendar, then Manage tickets on an event to add ticket types (name, price, optional capacity). Each ticket is a Commerce purchasable:

Capacity is enforced by Owl: a sold-out ticket reports getIsAvailable() as false, and the sold count is incremented transactionally when an order completes.

Maintenance

Occurrences are materialised up to a rolling horizon (default 24 months). Run the regenerate command from a daily cron so open-ended recurrence rules keep extending forward:

Add --queue to push the work onto Craft's queue instead of running it inline (recommended for sites with many recurring events).

Development

PHP and Composer run inside DDEV:

The recurrence engine and ICS builder are framework-agnostic and covered by the Pest unit suite.

The Craft layer (elements, services, queries, occurrence materialisation, timezone/DST storage) is covered by an integration harness that runs inside a real Craft install:

markhuot/craft-pest is not yet compatible with Craft 5.9's Symfony 7 dependencies, so the integration coverage is provided via this console harness rather than Pest feature tests.

License

This plugin is licensed under the Craft License — the standard license for commercial Craft CMS plugins. A commercial license is required for use in a production environment. © 2026 Justin Holt.

All versions of craft-owl with dependencies

PHP Build Version
Package Version
Requires php Version >=8.2
ext-json Version *
craftcms/cms Version ^5.6.0
rlanvin/php-rrule Version ^2.5
spatie/icalendar-generator Version ^3.0
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