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ra-data-localstorage

A dataProvider for react-admin that uses a local database, persisted in localStorage.

The provider issues no HTTP requests, every operation happens locally in the browser. User editions are persisted across refreshes and between sessions. This allows local-first apps, and can be useful in tests.

Installation

npm install --save ra-data-local-storage

Usage

// in src/App.js
import * as React from "react";
import { Admin, Resource } from 'react-admin';
import localStorageDataProvider from 'ra-data-local-storage';
import { PostList } from './posts';

const dataProvider = localStorageDataProvider();

const App = () => (
    <Admin dataProvider={dataProvider}>
        <Resource name="posts" list={PostList} />
    </Admin>
);

export default App;

defaultData

By default, the data provider starts with no resource. To set default data if the storage is empty, pass a JSON object as the defaultData argument:

const dataProvider = localStorageDataProvider({
    defaultData: {
        posts: [
            { id: 0, title: 'Hello, world!' },
            { id: 1, title: 'FooBar' },
        ],
        comments: [
            { id: 0, post_id: 0, author: 'John Doe', body: 'Sensational!' },
            { id: 1, post_id: 0, author: 'Jane Doe', body: 'I agree' },
        ],
    }
});

The defaultData parameter must be an object literal with one key for each resource type. Values are arrays of resources. Resources must be object literals with at least an id key.

Foreign keys are also supported: just name the field {related_resource_name}_id and give an existing value.

loggingEnabled

As this data provider doesn't use the network, you can't debug it using the network tab of your browser developer tools. However, it can log all calls (input and output) in the console, provided you set the loggingEnabled parameter:

const dataProvider = localStorageDataProvider({
    loggingEnabled: true
});

Features

This data provider uses FakeRest under the hood. That means that it offers the same features:

  • pagination
  • sorting
  • filtering by column
  • filtering by the q full-text search
  • filtering numbers and dates greater or less than a value
  • embedding related resources

License

This data provider is licensed under the MIT License, and sponsored by marmelab.