feathers-json-patch

Add JSON Patch support to any Feathers database adapter or service.

``bash
$ npm install --save feathers-json-patch
`

Usage

$3

An example using the feathers-memory adapter.

`js
const memoryService = require('feathers-memory');
const withJsonPatch = require('feathers-json-patch');

const service = withJsonPatch(memoryService);

app.use('/messages', service());
`

Another example, using service constructor:

`js
const MemoryService = require('feathers-memory').Service;
const withJsonPatch = require('feathers-json-patch');

const MyService = withJsonPatch(memoryService);

app.use('/messages', new MyService());
`

$3

`js
import feathers from '@feathersjs/client';
import { compare } from 'fast-json-patch';

const client = feathers().configure(...);

const id = 1;

const message = await client.service('/messages').get(id);

const newValues = {
...message,
text: 'My updated message!',
tags: ['info']
};

// Generate a JSON patch object
const diff = compare(message, newValues);

// Optional check, but no need to send
// a patch request if the diff has length == 0
if (diff.length) {
client.service('/messages').patch(id, diff);
}
`

$3

`http
PATCH /messages/1 HTTP/1.1
Accept: application/json

[
{
"op": "replace",
"path": "/text",
"value": "My updated message!"
},
{
"op": "add",
"path": "/tags",
"value": ["info"]
}
]

HTTP/1.1 200 OK
Content-Type: application/json

{
"id": 1,
"text": "My updated message!",
"tags": ["info"]
}
``