Events

Event	When
OnYandexMapsLocatorRegisterFilters	Building the filter registry
OnYandexMapsLocatorRegisterFeatureProviders	Registering Pro and third-party providers
OnYandexMapsLocatorBeforeStorePrepare	Before finalizing the Store DTO
OnYandexMapsLocatorAfterStorePrepare	After building the Store DTO
OnYandexMapsLocatorBeforeSearch	Before the query (snippet and REST)
OnYandexMapsLocatorAfterSearch	After loading the list
OnYandexMapsLocatorSerializeLocation	Before location fields in REST v1
OnYandexMapsLocatorBeforeApiResponse	Before REST JSON (version, action, payload)

Mutating Store

In a plugin, return the modified Store via $modx->event->output($store) or assign the object to store (by-ref in Before/After StorePrepare).

REST and BeforeSearch

OnYandexMapsLocatorBeforeSearch runs for both the snippet and REST. In REST, ApiSearchGuard runs once before search(). The event runs after the guard and sees criteria by-ref: a plugin can set where and product_id again. There is no second guard pass.

Package plugins

Package	Events
Free	OnDocFormSave, OnSiteRefresh, OnDocFormRender (mgr geocoding)
Pro	RegisterFeatureProviders, RegisterFilters, BeforeStorePrepare (TZ, products, amenity, brand), AfterStorePrepare, SerializeLocation, OnDocFormRender (schedule preview)

Extension contract: Extension API.