🔴 #20: Mongoose Built-In Validation using MongoDB in (NodeJS) Express App in Hindi in 2020
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Welcome, MongoDB Built-In Validation using
Welcome, MongoDB Built-In Validation using Mongoose in Express App in Hindi in 2020
MongoDB Validation using Mongoose
Before we get into the specifics of validation syntax, please keep the following rules in mind:
Validation is defined in the SchemaType
Validation is middleware. Mongoose registers validation as a pre('save') hook on every schema by default.
You can disable automatic validation before save by setting the validateBeforeSave option
You can manually run validation using doc.validate(callback) or doc.validateSync()
You can manually mark a field as invalid (causing validation to fail) by using doc.invalidate(...)
Validators are not run on undefined values. The only exception is the required validator.
Validation is asynchronously recursive; when you call Model#save, sub-document validation is executed as well. If an error occurs, your Model#save callback receives it
Validation is customizable
😍 Mongoose Validation: https://mongoosejs.com/docs/validatio...
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MongoDB Validation using Mongoose
Before we get into the specifics of validation syntax, please keep the following rules in mind:
Validation is defined in the SchemaType
Validation is middleware. Mongoose registers validation as a pre('save') hook on every schema by default.
You can disable automatic validation before save by setting the validateBeforeSave option
You can manually run validation using doc.validate(callback) or doc.validateSync()
You can manually mark a field as invalid (causing validation to fail) by using doc.invalidate(...)
Validators are not run on undefined values. The only exception is the required validator.
Validation is asynchronously recursive; when you call Model#save, sub-document validation is executed as well. If an error occurs, your Model#save callback receives it
Validation is customizable
😍 Mongoose Validation: https://mongoosejs.com/docs/validatio...
😍 Check my Instagram to Contact Me: Instagram: vinodthapa55
✅ NodeJS Tutorial in Hindi 2020: NodeJS Tutorial in Hindi 2023
✅ Express JS Tutorial In Hindi in 2020: Express JS Tutorial In Hindi in 2020
************ Must Watch Videos For Web Development ************
➡️ ReactJS Tutorial in Hindi 2020 Playlist Link: React JS Tutorial in Hindi 2022
➡️ React JS Project Netflix App Part #1 in Hindi in 2020: #22: Props in React Js in Hindi | Rea...
➡️ Install VS Code for ReactJS LINK: https://www.thapatechnical.com/2020/0...
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➡️ Template literals (Template strings) in ES6 in JavaScript in Hindi: ES6 Tutorial #3: Template literals (T...
➡️ Async Await in JavaScript in Hindi: Async Await in JavaScript in Hindi | ...
➡️ Promises in JavaScript in Hindi: Master The Promises in JavaScript in ...
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➡️ Ludo Game JavaScript Link: JavaScript Game in Hindi | Create a L...
➡️Plz show some love to My Siter Youtube Channel and Plz Subscribe Link: @mayabeautyvlogs878
**************** MUST WATCH VIDEOS *****************
➡️ How to become a Full Stack Developer 2020: How to become a Full Stack Developer ...
➡️ How To Become a Web Developer 2020: How To Become a Web Developer in Hind...
➡️ How JavaScript Works: How JavaScript Works in Hindi | JavaS...
➡️ Follow me on Instagram: Instagram: vinodthapa55
Make Website Responsive Using Media Queries in One Video in Hindi | Web Design Tutorial in Hindi
➡️ Link: Make Website Responsive Using Media Q...
Guys, Please support my channel by SUBSCRIBE to my channel and share my videos in your Social Network TimeLines.
Don't Forget to Follow me on all Social Network,
Website Link: https://www.thapatechnical.com
Instagram Link: Instagram: vinodthapa55
Facebook Link: Facebook: vinodthapa55
Twitter Link: Twitter: vb55thapa
Facebook ThapaTechnical Page Link: https://www.facebook.com/vinodbahadur...
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