lodash-multi-set-with

lodash-multi-set-with a lodash mixin used to multi set values with context in object

assume we want mapping status value in an object [{toreview:{status:1},reviewed:{status:2}},toreview:{status:1},reviewed:{status:2}}]

here is the code :

const arr = [{toreview:{status:1},reviewed:{status:2}},{toreview:{status:1},reviewed:{status:2}}];

const mapping = (s) => ({1:"pending",2:"done"}[s]);

arr.forEach((row)=>{
  row.toreview.status = mapping(row.toreview.status);
  row.reviewed.status = mapping(row.reviewed.status);
});

now we can code like this:

npm i lodash lodash-multi-set-with

const _ = require('lodash');
const multiSetWith =  require('lodash-multi-set-with');
_.mixin(multiSetWith);
// now we have `multiSetWith` method

_.multiSetWith(arr,"*.toreview,reviewed.status",mapping);

API

_.multiSetWith(object, expression, mapping, [context]):object

expression:

• key.subkey object key or array index
• key1,key2 multiple sibling keys or array indexes
• $ all keys

context:

you can access parent level in context ,merged with context argument

const data = { base: 10, items: [{ a: 1, b: 2, c: 5 }, { a: 4, b: 2, c: 5 }, { b: 2, c: 5 }] };

const res = _(data).multiSetWith(
  "items.$.a,b",
  // context.m :2 context.parent.c: sibling field
  (v, context) => v * context.m * context.parent.c,
  { m: 2 }
).value();

// { base: 10, items: [{ a: 10, b: 20, c: 5 }, { a: 40, b: 20, c: 5 }, { b: 20, c: 5 }] }

Deployment

clone this repo

npm i

npm run test run tests

depth filtering object inspired from https://gist.github.com/hafeyang/1d1295005cb58fb1ab0925216ccefe08

Built With

• Travis CI

Authors

• hafeyang

License

This project is licensed under the MIT License - see the LICENSE file for details

Thanks