js-nested-pick

Creates an object composed of the picked object properties from a nested object using a dot path, select specific fields based conditions with filter arrays with MongoDB queries

Can be used in js/ts projects in node/browser.

Support select number of fields from nested object with dot and object with query:

How to use:

const pick = require('js-nested-pick');

const data = {
    name: 'Dan',
    age: 30,
}

const values = pick(data, ['name']) // {name: 'Dan'}

• Simple select
  ['name', 'age']
  Select name and age from object
  

• Deep select with dot
  ['user.firstname']
  Select user.name from inner object
  

• Ommit fileds
  ['-password']
  Select all fields except the password
  

• Deep ommit fileds with dot
  ['-user.address']
  Select all fields except the user address
  

• Deep select/ ommit using object with path
  ['*', {path: 'user', select: ['-paasword']}]
  Select all fields, but in the user object, remove the password field
  

• Select field in root object base of query on the data - using sift (read sift docs to see the options)
  [{when: {isPublic: true}, then: ['*'], otherwise: ['title']}]
  When the data.isPublic equal to true then in the data.posts select all fields, otherwise select only the title (post can be object or array)
  

• Select field in inner object or array base of query on the data - using sift (read sift docs to see the options)
  [{path: 'post', when: {isPublic: true}, then: ['*'], otherwise: ['title']}]
  When the data.isPublic equal to true then in the data.posts select all fields, otherwise select only the title (post can be object or array)
  

• Select field in inner object or array base of query on the item data - using sift (read sift docs to see the options)
  [{path: 'posts', where: {isPublic: true}, then: ['*'], otherwise: ['title']}]
  When the post.isPublic equal to true then select all post fields, otherwise select only the title (post can be object or array)
  

In-browser Playgrounds

Dependencies:

1. lodash/get
2. lodash/set
3. lodash/omit
4. sift

Test with jest