The breadcrumbs builder

The sonata.admin.breadcrumbs_builder service is used in the layout of every page to compute the underlying data for two breadcrumbs:

• one as text, appearing in the title tag of the document's head tag;
• the other as html, visible as an horizontal bar at the top of the page.

Getting the breadcrumbs for a given action of a given admin is done like this:

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$this->get('sonata.admin.breadcrumbs_builder')->getBreadcrumbs($admin, $action);

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# config/packages/sonata_admin.yaml

sonata_admin:
    breadcrumbs:
        # use this to change the default route used to generate the link
        # to the parent object inside a breadcrumb, when in a child admin
        child_admin_route: show