Renderer::executeInRenderContext
public function Renderer::executeInRenderContext
public Renderer::executeInRenderContext(RenderContext $context, callable $callable)
Executes a callable within a render context.
Only for very advanced use cases. Prefer using ::renderRoot() and ::renderPlain() instead.
All rendering must happen within a render context. Within a render context, all bubbleable metadata is bubbled and hence tracked. Outside of a render context, it would be lost. This could lead to missing assets, incorrect cache variations (and thus security issues), insufficient cache invalidations, and so on.
Any and all rendering must therefore happen within a render context, and it is this method that provides that.