/handbook/developing-for-block-editor-and-site-editor/utilizing-rest-api-and-datastore-in-wordpress/
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Resources Developing for Block Editor and Site Editor REST API & datastore
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On this page
REST API in WordPress
1. Server-Side Interaction
2. Fetching Data
3. Modifying Data
4. Authentication & Security
5. Custom Endpoints
Datastore in Gutenberg
1. Client-Side State Management
2. Stores
3. Selectors and Actions
4. Real-Time Updates
5. Syncing with REST API
Useful links
Last updated on May 26, 2026
Utilizing REST API and Datastore in WordPress
In modern web development, effectively integrating both the REST API and the datastore is essential for managing dynamic data interactions. The REST API enables developers to interact with server-side data by retrieving or modifying content and metadata. It is particularly useful for incorporating external or asynchronous data, allowing for smooth communication between the client and the server.
The datastore functions as a client-side solution for managing the application state. It follows Redux principles, offering structured state management. You can dispatch actions to modify the state or select specific pieces of data from the store for use in your components. This approach enables a more interactive and responsive user experience by allowing data handling directly in the interface, without the need for immediate communication with the server.
REST API in WordPress
The WordPress REST API allows developers to interact with WordPress programmatically by sending and receiving JSON data over HTTP. It provides endpoints for creating, reading, updating, and deleting content, making it ideal for building custom applications, headless WordPress setups, and integrating with third-party services. This API enhances the flexibility of WordPress by enabling developers to extend its functionality beyond the traditional front end.
1. Server-Side Interaction
- Provides an interface to interact with WordPress data, such as posts, users, and media, via HTTP requests.
- Enables Create, Read, Update, and Delete (CRUD) operations.
2. Fetching Data
- Allows external applications or JavaScript code in blocks to retrieve content dynamically from the database.
- Use the
wp.apiFetchfunction to make API requests in Gutenberg.
3. Modifying Data
- Enables updates to WordPress content directly from the front end or within blocks.
- REST API routes handle data updates, like saving metadata or updating posts.
4. Authentication & Security
- Requires authentication (via cookies or tokens) for certain operations like updating content or deleting posts.
- Protects sensitive data through permissions and role checks.
5. Custom Endpoints
- Developers can register custom REST API endpoints to handle specific data requirements or provide new ways to interact with content.
Datastore in Gutenberg
In Gutenberg, the datastore is part of the WordPress data module, which manages the state of the editor using a centralized data structure. It allows developers to access, manage, and update data, such as block attributes, editor settings, and post metadata, across various components in the editor. This ensures consistent state management and reactivity within Gutenberg blocks and plugins.
1. Client-Side State Management
- Based on the Redux library, it manages the state directly within the Gutenberg editor.
- Useful for tracking changes to the content, block settings, and user interactions without needing server communication.
2. Stores
- Gutenberg uses multiple stores for different parts of the editor (e.g.,
core/block-editor,core/editor). - Each store holds a state for specific aspects of the editor, such as blocks or post data.
3. Selectors and Actions
- Selectors are used to read data from the store (e.g.,
select('core/block-editor').getBlocks()). - Actions are dispatched to modify the state (e.g.,
dispatch('core/editor').editPost()).
4. Real-Time Updates
- Allows immediate changes to the state (e.g., block attributes, editor UI), providing a responsive experience.
- Changes are stored temporarily until they are explicitly saved.
5. Syncing with REST API
- While the datastore manages the client-side state, syncing happens with the REST API when changes need to persist in the database (e.g., saving a post).
- This combination ensures data integrity while allowing smooth interaction in the editor.
By utilizing the REST API for server-side operations and the Datastore for client-side state management, Gutenberg development enables both dynamic data fetching and seamless local state handling within the editor environment.
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