ReactiveViews

ReactiveViews lets you write React components and use them directly inside Rails views — with server-side rendering (SSR), client hydration, and an optional full-page .tsx.erb / .jsx.erb pipeline. No separate frontend app required.

⚠️ ReactiveViews is in beta. Expect some breaking changes as the API and defaults settle. If you run it in production, treat the Node SSR runtime as part of your app (monitor it, capture logs, and load test SSR-heavy pages).

• React islands in ERB: write <UserBadge /> in .html.erb and get SSR + hydration.
• Full-page React templates: render entire Rails pages from .tsx.erb / .jsx.erb while keeping Rails controllers, routes, and layouts.
• Fast SSR: batch rendering for flat pages, tree rendering for nested component composition.
• Less prop plumbing: optional TypeScript-based prop key inference for full-page pages (reduces payload size).
• Caching knobs: SSR HTML caching + inference caching with pluggable cache stores.
• Vite-native: dev HMR + production builds via vite_rails.

// app/views/components/user_badge.tsx
type Props = { fullName: string };

export default function UserBadge({ fullName }: Props) {
  return <strong className="UserBadge">{fullName}</strong>;
}

<!-- app/views/users/show.html.erb -->
<UserBadge fullName="<%= @user.name %>" />

# app/controllers/users_controller.rb
class UsersController < ApplicationController
  def index
    @users = User.select(:id, :name).order(:name)
    reactive_view_props(current_user: current_user)
  end
end

// app/views/users/index.tsx.erb
interface Props {
  users: Array<{ id: number; name: string }>;
  current_user: { name: string } | null;
}

export default function UsersIndex({ users, current_user }: Props) {
  return (
    <main>
      <h1>Users</h1>
      {current_user ? (
        <p>Signed in as {current_user.name}</p>
      ) : (
        <p>Not signed in</p>
      )}
      <ul>
        {users.map((u) => (
          <li key={u.id}>{u.name}</li>
        ))}
      </ul>
    </main>
  );
}

1. Add the gem + install:

gem "reactive_views"

bundle install

2. Run the installer:

bundle exec rails generate reactive_views:install

3. Start dev:

bin/dev

That runs Rails + Vite + the SSR server together.

For the layout helper and a full walkthrough, see docs/getting-started.md.

Start at docs/README.md. Handy links:

• Quick start: docs/getting-started.md
• Islands in ERB: docs/islands.md
• Full-page .tsx.erb / .jsx.erb: docs/full-page-tsx-erb.md
• Configuration: docs/configuration.md
• SSR runtime & process management: docs/ssr.md
• Caching: docs/caching.md
• Production deployment: docs/production-deployment.md
• Troubleshooting: docs/troubleshooting.md
• Security considerations: docs/security.md
• API reference: docs/api-reference.md

• Read docs/security.md (props are public; SSR should stay private).
• Read docs/production-deployment.md (assets, SSR process strategy, what to monitor).

At this time, we are only accepting bug reports. If you encounter any issues or have suggestions, please open an issue on our GitHub repository.

We appreciate your feedback and contributions to help improve ReactiveViews!

The gem is available as open source under the terms of the MIT License.