books/docs/server/backends.md

Backends

Frappe.js comes with built-in backends for data storage. These can be client-side or server-side

• SQLite
• REST

There can be only one backend at a time that can be accessed by the frappe.db property.

API

The backend will implement the following async methods

• get_doc
• get_all
• get_value
• insert
• update

sqlite Backend

Connection paramter required for the sqlite backend is the path of the file

sqllite = require('frappe-core/frappe/backends/sqlite');

frappe.db = await new sqlite.Database({db_path: db_path})

SQL Queries

You can also directly write SQL with frappe.db.sql

all_todos = frappe.db.sql('select name from todo');

REST Backend

For the client, the backend is the REST API that executes calls with web-requests.

Before using, you must initialize the frappe.fetch property with window.fetch or node-fetch

const Database = require('frappe-core/frappe/backends/rest_client').Database;

frappe.fetch = window.fetch.bind();
frappe.db = await new Database({server: server});