bitrix-components

Bitrix components

Baseline: main 23.0+ · Verified: main 26.800.0

Task	Read
Placement, scaffold, class.php, params, .description.php, .parameters.php	rules/structure.md
Template search order and overrides, template.php, result_modifier.php, component_epilog.php	rules/template.md
Result cache, paged list, complex SEF, AJAX actions	rules/cache-sef-ajax.md
PageNavigation, pager templates	bitrix-cms-basics
Grid, filter, toolbar in templates	bitrix-ui

Invariants

• Own components in /local/components/<vendor>/; kernel components are changed only by copying their template to /local/templates/<site>/components/….
• Logic in class.php and services; templates only render $arResult, escaping output.
• onPrepareComponentParams() casts every param; ~KEY is the raw value.
• Everything that changes output is in the cache key (user groups, page number, filter).
• Nested components get $component as the 4th IncludeComponent() argument.
• AJAX through Controllerable actions with prefilters and signed parameters.