Content Entity Routes adds extra local-task tabs — like
/node/{node}/content or /media/{media}/preview —
to any fieldable content entity. Each tab renders the entity with a configured
view mode (read) or form mode (edit), fully
configurable through the admin UI. No custom code per entity type.

Why

Out of the box, a node has View, Edit and Delete
tabs. Many sites need a focused secondary editing surface — e.g. a
“Content” tab that only exposes paragraph fields, or a
“Preview” tab that renders a media item in a custom view mode.
Building that manually means a custom route, a custom local task, a custom
form-handler registration and a per-bundle opt-in mechanism — for every
entity type.

This module replaces all of that with one config entity:

Entity type Bundles Mode Slug Title Mode name node page, article form content Content content taxonomy_term categories form content Content content media image, icon view custom_preview Live Preview live_preview

Features

Works with any entity type that is fieldable and has a canonical link template (node, taxonomy_term, media, user, commerce_product, …).
View-mode tabs render the entity in any view mode you have configured.
Form-mode tabs reuse the entity’s default form handler but pick up the matching form display automatically — the same trick form_mode_manager uses, with no per-entity-type wiring.
Bundle filtering per tab (or leave empty to apply to all bundles).
Translation-aware: form-mode tabs on translatable entities also expose /{entity}/translations/edit/{language}/{slug} automatically, so editors can open the configured form mode against a specific non-current translation when navigating from the "Translations" overview.
Access delegated to the underlying entity’s view / update permission, so existing entity access, workflows and content moderation keep working.
Fully exportable as configuration — tabs live in config/sync like any other config entity.
Zero hard-coded entity types or paths.

How it works

A config entity (entity_route_tab) stores each tab definition.
A route subscriber appends /{slug} to the entity’s canonical path. Form-mode tabs use Drupal’s built-in _entity_form route default; view-mode tabs use a small controller that calls the view builder.
hook_entity_type_alter() registers the entity type’s default form handler under the form-mode operation, so ContentEntityForm picks up the matching form display automatically.
A local task deriver attaches each tab to the canonical route. Bundle filtering is enforced by a _custom_access check, so tabs are auto-hidden on the wrong bundles via url.access cacheability.

Usage

Create a view mode or form mode you want to expose at Structure → Display modes.
Enable that mode for the target bundle in Manage form display (form mode) or Manage display (view mode) and arrange the fields.
Go to Structure → Entity route tabs and add a new tab. Pick the entity type, bundles, mode type, mode name, slug, title and weight.
The new tab appears on the matching entity pages and is reachable at <canonical-path>/<slug>, e.g. /node/42/content.

Permissions

Administer entity route tabs — manage the config entities.
Per-tab access is delegated to the entity’s view (view-mode tab) or update (form-mode tab) check, so no extra permissions to wire up.

Requirements

Drupal 10.3+ or Drupal 11
PHP 8.1+
An existing view mode or form mode on the target entity type

Installation

composer require drupal/content_entity_routes
drush en content_entity_routes

Roadmap

Add-translation in form mode — equivalent of /{entity}/translations/add/{source}/{target}/{slug}, so a brand-new translation can be created directly in a custom form mode (today only the edit-translation variant is wired up).
Local task derivation on the translations overview page, so the form-mode tabs appear there too instead of requiring direct URL access.

Similar modules

Form mode manager — exposes extra form modes as routes. Content Entity Routes covers both form and view modes, with explicit per-tab config entities (label, slug, bundle filter, weight) instead of an automatic per-form-mode route. It also ships an edit-translation route variant that form_mode_manager doesn’t.
View mode page — nodes only. Content Entity Routes works for any fieldable entity type and exposes both view and form modes.

Content entity routes

Why