During AJAX post request, the first post works but any subsequent request is failing with the following error:

TypeError: doc.hasOwnProperty is not a function

I patched the issue on my local box by editing the following file, with the following fix:
underscore-db\src\index.js:36

if (doc[self.__id()] || doc.hasOwnProperty && doc.hasOwnProperty(self.__id())) {

My node version, may have something to do with it, I'm on 7 ... Other than that I can't think of why doing standard Object key checking solves my issue.

Here is my sample data from my json-server db.json file:

{
  "users":[
    {
      "username": "acker",
      "motto": "apple",
      "id": 14
    },
    {
      "username": "test3",
      "motto": "test33",
      "id": 15
    }
  ]
}

Again, very odd, the first communication with json-server to POST data works but no further POST requests to json-server works. I know json-server is NOT your package but editing underscore-db FIXED our issue locally.

Thank you kindly for any help you maybe able to offer.

I was using lowdb and underscore-db without problem until now. But method where() doesn't exist anymore in newer versions of lodash, so each time I want to use a method from underscore-db, I get the following message : TypeError: undefined is not a function.
All was working fine with underscore-db 0.8.1 and lowdb 0.8.1.

Here is my previous code :
var low = require('lowdb'); low.mixin(require('underscore-db')); var db = low('db.json'); var users = db('users).removeWhere({id: 1});

I am now using :
var low = require('lowdb'); var db = low('db.json'); db._.mixin(require('underscore-db')); var users = db('users).removeWhere({id: 1});

Hi. The insert method behaves like what is usually called upsert in most DBMS'. So could you add upsert as an alias? I think it more clearly indicates intent.

Or, alternatively, rename the current insert method to upsert, and then rewrite insert to behave like a regular DBMS insert?

Is there any alternative to use upsert but updating instead of replacing?

when i execute

 db;
Object {posts: Array[7], comments: Array[2]}

its list the object properly
but when i execute other commands for eg., _.get(), it is giving error

_.get(db.posts,1)
TypeError: Cannot call method 'find' of undefined

Hello how could i reuse the results from "where" in my "update" ?

regards

Chris

var post = _.find(db.posts, {title: 'foo'});

is giving this error

TypeError: Object #<Object> has no method 'call'

Hello, I couldn't find any Typescript support for this library, does it exist?

Many thanks!

Just found out a solution:
https://stackoverflow.com/questions/45462193/how-to-use-chain-with-lodash-es-while-supports-tree-shaking/72983877#72983877

Maybe should be added to documentation?

import lodashId from 'lodash-id'
import { mixin, chain, wrapperLodash } from 'lodash-es'

// doesn't work
mixin(lodashId)

// works
mixin(wrapperLodash, lodashId)

// test cases
console.log(chain([]).head)
console.log(chain([]).insert)
console.log(chain([]).insert({a:1}).value())

How do I list all elements?

Just a thought.
Insert-function finds the max id value and adds 1. It would be possible to obtain the same id for newly inserted id when writing multiple values asynchronously. Maybe use a lock or randomize id? Using random id (e.g. hash) would enable distributing db over multiple files and operating on each separately, thus allowing greater scalability...

Hello,
Thanks for the nice library !
I took me some time to understand what the _.where in the documentation means, as it is depreacted in 4.x and not part of lodash documentation anymore.
It would help new comers like me if it was replaced by _.find in the readme !

We have updateByd and updateWhere. like wise we have replaceById but we dosen't have replaceWhere.
Can you pls supportfor replaceWhere

The documentation for createId indicates that it will be passed the collectionName and the item for which an id is being generated. It appears that it is actually passed the collection, as opposed to the collectionName. See

example:

import low from 'lowdb'
import FileSync from 'lowdb/adapters/FileSync'
import lodashId from 'lodash-id'
import shortId from 'shortid'

const adapter = new FileSync('../../db.json')

const db = low(adapter)
db._.mixin(lodashId)
db._.createId = (collectionName) => {
  console.log(collectionName) // I expect collectionName to be 'sprockets'. Instead it is `[]`
  return `${collectionName}-${shortId.generate()}`
}

db.defaults({
  sprockets: []
}).write()

db.get('sprockets').upsert({ name: 'my sprocket' }).write()

Consider supporting auto-increment int id ? such as 1, 2, 3 with unique check

Hi,
Looks like an awesome idea.

1. Are you planning to support lodash/fp as well?
2. Have you looked at lodash.mixin? It allows to extend the current functionality of lodash.

Thanks

Hi,
I want use this library but It's not working at all and return below error:
undefined is not a function (evaluating '_lodash.default.insert(new_notes, { date: date, title: title, note: note });

What is the issue?
Any specific import needed? I just import Lodash

/CC: @typicode, @lukehorvat, @Dununan, @justcfx2u

I receive an array of objects from an API and would like to store them. Sometimes the objects match those already in the db and other times they've been altered. This sounds like a great use of upsert.

Unfortunately, the only way I can get this to work is

users.forEach(user => db.get('users').upsert(user).write())

where users is the array of objects. Is there a better way to do this than calling write in a loop?