# Category: mean

## How to unset a field in Mongoose with findByIdAndUpdate [duplicate]

This question already has an answer here: Mongoose overwrite the document rather that $set fields 2 answers I use MEAN stack. On my backend I use findByIdAndUpdate function in Mongoose to do the update operation in CRUD. I also use Bootstrap UI date picker. On “clearing” of the date, uib-datepicker-popup resets the scope value for the date field to undefined. Now I pass the scope resource object into Mongoose with a HTTP PUT angular$resource […]

## AngularJS POST Fails: Failed to load http://localhost:3000/done: Response for preflight has invalid HTTP status code 404

source code when I POST data from postman it shows an correct response data, but when i POST data using app(client) side it shows an Failed to load http://localhost:3000/done: Response for preflight has invalid HTTP status code 404 Source: AngularJS

## How to get the templates of one server from another(Angular 1 or 2 or js)

I have a folder with list of templates.I want to get these templates through a http call or any other method if it suits. I have the folder in the server with url, www.testserver/email/templates/ Can any one please suggest me help.Thanks. Source: AngularJS