react-rebac

react-rebac is a lightweight React library written in TypeScript for handling relationship-based access controls (ReBAC) in React applications. It provides components, hooks, and helpers to manage access permissions to resources based on user relationships, such as membership in an organization or a team, with roles like Admin, Member, or Viewer.

Table of Contents

• Installation
• Usage
  • Basic Setup
  • Code Example
• API
  • RebacProvider
  • useRebac
  • AuthorizedContent
  • useAuthorization
  • useUserEntities
• License

Installation

Install with npm:

npm install react-rebac

Or with Yarn:

yarn add react-rebac

Usage

Basic Setup

1. Wrap your application with the RebacProvider to supply the context for user relationship access.
2. Use setUser to define a user's relationships with different entities.
3. Use AuthorizedContent to conditionally render content based on user permissions.

Code Example

Here's an example of implementing an application using react-rebac.

import React from 'react';
import { RebacProvider, AuthorizedContent, useRebac } from 'react-rebac';

const App: React.FC = () => (
  <RebacProvider>
    <Header />
    <MainContent />
  </RebacProvider>
);

const Header: React.FC = () => {
  const { setUser } = useRebac();
  const userEntities = [
    { id: 'orgA', type: 'Organization', relation: 'Admin' },
    { id: 'team1', type: 'Team', relation: 'Member' },
    { id: 'team2', type: 'Team', relation: 'Viewer' },
    { id: 'orgB', type: 'Organization', relation: 'Viewer' },
  ];
  
  setUser(userEntities);
  return <h1>Welcome to our application!</h1>;
};

const MainContent: React.FC = () => (
  <div>
    <h2>Conditional content based on user access</h2>
    <AuthorizedContent entityId="orgA" entityType="Organization" relationship="Admin">
      <h3>Organization A Admin</h3>
      <p>Content for Organization A admins.</p>
    </AuthorizedContent>
    <AuthorizedContent entityId="team1" entityType="Team" relationship="Member">
      <h3>Team1 Member</h3>
      <p>Content for Team1 members.</p>
    </AuthorizedContent>
    <AuthorizedContent entityId="team2" entityType="Team" relationship="Viewer">
      <h3>Team2 Viewer</h3>
      <p>Content for Team2 viewers.</p>
    </AuthorizedContent>
    <AuthorizedContent entityId="orgB" entityType="Organization" relationship="Viewer">
      <h3>Organization B Viewer</h3>
      <p>Content for Organization B viewers.</p>
    </AuthorizedContent>
  </div>
);

export default App;

API

RebacProvider

Contextual component that wraps the application, making the authorization context available to all child components.

useRebac

Hook for accessing the authorization context, returning userEntities, setUser, and hasAccess.

• setUser(entities: Entity[]): Defines user relationships with different entities. An Entity includes { id, type, relation }.
• hasAccess(entityId: string, entityType: string, relationship: string): boolean: Checks if the user has a specific relationship with an entity.

AuthorizedContent

A component that conditionally renders its content based on user permissions. Props include:

• entityId: string: Entity identifier.
• entityType: string: Entity type (e.g., "Team", "Organization").
• relationship: string: Required relationship (e.g., "Admin", "Viewer").

useAuthorization

Hook returning a boolean indicating if the user has a specific relationship with a given entity. Usage:

const canView = useAuthorization("orgA", "Organization", "Admin");

useUserEntities

Hook returning the list of entities associated with the user. Usage:

const userEntities = useUserEntities();

License

This library is licensed under the Apache-2.0 License.