TypeORM Adapter

TypeORM Adapter is the TypeORM adapter for Node-Casbin. With this library, Node-Casbin can load policy from TypeORM supported database or save policy to it.

Based on Officially Supported Databases, the current supported databases are:

• MySQL
• PostgreSQL
• MariaDB
• SQLite
• MS SQL Server
• Oracle
• WebSQL
• MongoDB

You may find other 3rd-party supported DBs in TypeORM website or other places.

Installation

npm install typeorm-adapter

You also need to install the driver for the database you use, e.g. mysql2, pg, better-sqlite3 or mongodb.

mongodb is declared as an optional peer dependency, so it is not installed unless you ask for it. Importing typeorm-adapter never loads it at runtime. However, the shipped type declarations for CasbinMongoRule still reference the ObjectId type from mongodb. If you do not use MongoDB and compile with skipLibCheck: false, TypeScript reports TS2307: Cannot find module 'mongodb' — set skipLibCheck: true in your tsconfig.json (the setting recommended by the TypeScript team and enabled by default in most scaffolding tools), or install mongodb as a dev dependency.

Simple Example

import { newEnforcer } from 'casbin';
import TypeORMAdapter from 'typeorm-adapter';

async function myFunction() {
    // Initialize a TypeORM adapter and use it in a Node-Casbin enforcer:
    // The adapter can not automatically create database.
    // But the adapter will automatically create and use the table named "casbin_rule".
    // I think ORM should not automatically create databases.  
    const a = await TypeORMAdapter.newAdapter({
        type: 'mysql',
        host: 'localhost',
        port: 3306,
        username: 'root',
        password: '',
        database: 'casbin',
    });


    const e = await newEnforcer('examples/rbac_model.conf', a);

    // Load the policy from DB.
    await e.loadPolicy();

    // Check the permission.
    await e.enforce('alice', 'data1', 'read');

    // Modify the policy.
    // await e.addPolicy(...);
    // await e.removePolicy(...);

    // Save the policy back to DB.
    await e.savePolicy();
}

Simple Filter Example

import { newEnforcer } from 'casbin';
import TypeORMAdapter from 'typeorm-adapter';

async function myFunction() {
    // Initialize a TypeORM adapter and use it in a Node-Casbin enforcer:
    // The adapter can not automatically create database.
    // But the adapter will automatically create and use the table named "casbin_rule".
    // I think ORM should not automatically create databases.  
    const a = await TypeORMAdapter.newAdapter({
        type: 'mysql',
        host: 'localhost',
        port: 3306,
        username: 'root',
        password: '',
        database: 'casbin',
    });


    const e = await newEnforcer('examples/rbac_model.conf', a);

    // Load the filtered policy from DB.
    await e.loadFilteredPolicy({
        'ptype': 'p',
        'v0': 'alice'
    });

    // Check the permission.
    await e.enforce('alice', 'data1', 'read');

    // Modify the policy.
    // await e.addPolicy(...);
    // await e.removePolicy(...);

    // Save the policy back to DB.
    await e.savePolicy();
}

Custom Entity Example

Use a custom entity that matches the CasbinRule or MongoCasbinRule in order to add additional fields or metadata to the entity.

import { newEnforcer } from 'casbin';
import {
  CreateDateColumn,
  UpdateDateColumn,
} from 'typeorm';
import TypeORMAdapter from 'typeorm-adapter';

@Entity('custom_rule')
class CustomCasbinRule extends CasbinRule {
  @CreateDateColumn()
  createdDate: Date;

  @UpdateDateColumn()
  updatedDate: Date;
}

async function myFunction() {
    // Initialize a TypeORM adapter and use it in a Node-Casbin enforcer:
    // The adapter can not automatically create database.
    // But the adapter will automatically create and use the table named "casbin_rule".
    // I think ORM should not automatically create databases.  
    const a = await TypeORMAdapter.newAdapter({
        type: 'mysql',
        host: 'localhost',
        port: 3306,
        username: 'root',
        password: '',
        database: 'casbin',
      },
      {
        customCasbinRuleEntity: CustomCasbinRule,
      },
    );

    const e = await newEnforcer('examples/rbac_model.conf', a);

    // Load the filtered policy from DB.
    await e.loadFilteredPolicy({
        'ptype': 'p',
        'v0': 'alice'
    });

    // Check the permission.
    await e.enforce('alice', 'data1', 'read');

    // Modify the policy.
    // await e.addPolicy(...);
    // await e.removePolicy(...);

    // Save the policy back to DB.
    await e.savePolicy();
}

Custom Database Table Name Example

If you want to use a custom table name for the casbin rules, you need to: Create a custom entity class that inherits from CasbinRule and uses the @Entity decorator with your table name. Pass the custom entity class to the entities array of the data source constructor. Pass the custom entity class to the customCasbinRuleEntity option of the typeorm-adapter constructor.

import { newEnforcer } from 'casbin';
import {
  CreateDateColumn,
  UpdateDateColumn,
} from 'typeorm';
import TypeORMAdapter from 'typeorm-adapter';

@Entity('custom_rule')
class CustomCasbinRule extends CasbinRule {
  @CreateDateColumn()
  createdDate: Date;

  @UpdateDateColumn()
  updatedDate: Date;
}

async function myFunction() {
    // Initialize a TypeORM adapter and use it in a Node-Casbin enforcer:
    // The adapter can not automatically create database.
    // But the adapter will automatically create and use the table named "casbin_rule".
    // I think ORM should not automatically create databases.  

    const datasource = new DataSource({
        type: 'mysql',
        host: 'localhost',
        port: 3306,
        username: 'root',
        password: '',
        database: 'casbin',
        entities: [CustomCasbinRule],
        synchronize: true,
    });

    const a = await TypeORMAdapter.newAdapter(
      { connection: datasource },
      {
        customCasbinRuleEntity: CustomCasbinRule,
      },
    );

    const e = await newEnforcer('examples/rbac_model.conf', a);

    // Load the filtered policy from DB.
    await e.loadFilteredPolicy({
        'ptype': 'p',
        'v0': 'alice'
    });

    // Check the permission.
    await e.enforce('alice', 'data1', 'read');

    // Modify the policy.
    // await e.addPolicy(...);
    // await e.removePolicy(...);

    // Save the policy back to DB.
    await e.savePolicy();
}

Getting Help

• Node-Casbin

License

This project is under Apache 2.0 License. See the LICENSE file for the full license text.