Plugin Development
MeetAgain's plugin system lets you extend the platform without touching core code.
Plugins integrate through well-defined hooks and interfaces — navigation, content tiles,
event filters, authorization, notifications, and more.
What can plugins do?
| Hook / Interface |
Purpose |
Example plugin |
getMenuLinks() |
Add links to the main navigation |
dishes, filmclub |
getEventTile() |
Render a custom box on event detail pages |
filmclub (voting tile) |
getEventListItemTags() |
Add badges to events in list views |
dishes (vegetarian tag) |
getMemberPageTop() |
Inject content above the admin member list |
filmclub |
getFooterAbout() |
Add content to the footer's About section |
filmclub |
preFixtures() / postFixtures() |
Run setup tasks around fixture loading |
filmclub |
loadPostExtendFixtures() |
Create data tied to recurring event instances |
filmclub |
runCronTasks() |
Schedule periodic background tasks |
filmclub |
AdminNavigationInterface |
Add sections and links to the admin sidebar |
filmclub, bookclub |
EventFilterInterface |
Filter which events are visible |
(custom) |
MenuFilterInterface |
Filter navigation links by context |
(custom) |
CmsFilterInterface |
Filter which CMS pages are visible |
(custom) |
MemberFilterInterface |
Filter which members appear in lists |
(custom) |
PermissionVoterInterface |
Override or veto any permission decision |
multisite |
EventActionGuardInterface |
Allow or deny event-scoped actions (RSVP, comments…) |
(custom) |
EventActionDenyMessageProviderInterface |
Custom error messages for denied event actions |
(custom) |
EventFilterFormContributorInterface |
Add fields to the event filter form |
(custom) |
NotificationProviderInterface |
Provide notification counts to the bell icon |
dinnerclub |
EntityActionInterface |
React to core entity lifecycle events |
filmclub |
Developer journey
- Create the skeleton — directory structure,
Kernel.php, config files
- Implement
Kernel.php — at minimum, fill every method in the Plugin interface
- Choose optional interfaces — add only the hooks your plugin needs
- Add fixtures — extend
AbstractFixture for type-safe test data
- Test — unit-test services in isolation, functional-test key flows
- Enable — run
just plugin-enable your-plugin and just devModeFixtures
Complexity levels
| Level |
Example |
Interfaces used |
| Simple |
dishes |
Plugin only — one menu link, no tiles |
| Intermediate |
filmclub |
Plugin + AdminNavigationInterface — event tiles, cron, fixtures |
| Advanced |
multisite |
Plugin + 6 optional interfaces — multi-tenant filtering, authorization |
Quick links
| Page |
What you'll find |
| Quick Start |
Skeleton, minimal Kernel.php, enable commands |
| Required Hooks |
Full reference for every Plugin interface method |
| Optional Hooks |
All optional interfaces with examples |
| Permissions |
Defining actions, default rules, custom voters, and templates |
| Architecture |
Namespaces, services, routes, templates, DB conventions |
| Best Practices |
Coding patterns that keep plugins safe and removable |
| Data Fixtures |
Cross-fixture references, fixture groups, hook timing |
| Testing |
Unit and functional testing guide for plugin code |
| Troubleshooting |
Common problems and solutions |