Reset middleware for json-server
Requires Node version 8 or above (because of [email protected] peer dependency).
npm install --save json-server-resetIf you are using json-server, add this module as a middleware. For example, imagine our data file to be data.json with the following resources
{
"todos": []
}Then load the file and this middleware
json-server data.json --middlewares ./node_modules/json-server-reset
Then you can work with "todos" and reset the datastore (I am using httpie client in this examples)
$ http :3000/todos
[]
$ http POST :3000/todos text="do something"
{
"id": 1,
"text": "do something"
}
$ http POST :3000/todos text="do something else"
{
"id": 2,
"text": "do something else"
}
$ http :3000/todos
[
{
"id": 1,
"text": "do something"
},
{
"id": 2,
"text": "do something else"
}
]
Now reset the database back to the initial empty list of todos. Note := syntax to send the JSON as a list, not as a string.
$ http POST :3000/reset todos:=[]
$ http :3000/todos
[]
Instead of overwriting the entire database with new data, you can merge the existing data with a subset (by the top key).
// current data
// { todos: [...], people: [...] }
Let's reset just the "people" resource list, leaving the todos unchanged. Include the src/merge.js middleware
json-server data.json --middlewares ./node_modules/json-server-reset --middlewares ./node_modules/json-server-reset/src/merge
Call the endpoint POST /merge
$ http POST :3000/merge people:=[]
// updated data
// { todos: [...], people: [] }
If using this middleware from your server, you can clear some resources on startup
const initJsonServerReset = require('json-server-reset/src/init-reset')
const router = jsonServer.router(dataFilename)
// list of REST resources to clear on startup
const clear = ['todos']
server.use(initJsonServerReset({ db: router.db, clear }))Run this module with environment variable
DEBUG=json-server-reset
If you want to use json-server-reset when building your own server that includes json-server, make sure the to initialize it by passing json-server reference and router database reference, and to add body-parser middleware before the reset. This middleware is included with json-server
Then set it to be the middleware before the rest of the json-server middlewares.
const jsonServer = require('json-server')
const reset = require('json-server-reset')
// create json server and its router first
const server = jsonServer.create()
const router = jsonServer.router(dataFilename)
server.use(
jsonServer.defaults({
static: '.', // optional static server folder
bodyParser: true,
readOnly: false,
}),
)
server.use(reset)
server.db = router.db
server.use(router)Author: Gleb Bahmutov <[email protected]> © 2017
License: MIT - do anything with the code, but don't blame me if it does not work.
Support: if you find any problems with this module, email / tweet / open issue on Github
Copyright (c) 2017 Gleb Bahmutov <[email protected]>
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