// case_study / ruby_gem
Pressroom Rails Engine
A mountable Ruby on Rails engine that adds block-based article publishing to an existing application without taking ownership of authentication, public routes or product styling.
01 / the product
Editorial tooling inside your Rails app.
Pressroom adds a block editor, article model, drafts, scheduled publication, categories, tags and RSS/Atom feeds to an existing Rails application. The host app keeps control of authentication, users and public URLs.
The block registry is the core abstraction: one Ruby definition drives the editor configuration, server-side rendering, sanitization and plain-text extraction for search.
02 / technology
A composable Rails engine.
- Mountable Rails Engine with Active Record models, migrations, controllers and helpers.
- Editor.js for block-based authoring, vendored through the gem and pinned with importmap.
- Turbo and Stimulus included under private package names to avoid host-app collisions.
- Sanitized HTML fields, escaped string fields and configurable allow-lists.
- Built-in paragraph, header, nested list, quote, code, image and delimiter blocks.
- RSS and Atom feed generation through the Ruby RSS library.
- Authentication fails closed until the host application supplies an explicit hook.
03 / package surface
Designed for integration.
Pressroom exposes a small public API: configuration, block registration, post/category/tag models, feeds and the render_blocks helper. The package avoids imposing typography or product-level styling on the application that mounts it.
04 / result
Reusable publishing infrastructure.
Pressroom packages a repeatable editorial foundation as a versioned dependency. It can be mounted into a SaaS, marketplace or content-heavy Rails product and extended with application-specific blocks.