How to use validate in mongoose?
How to use validate in mongoose?
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.
Is mongoose validation enough?
If the validation logic is simple and small, there is no problem about mongoose validation. But in case of complex validation rules and multiple fields, then express-validator may be better choice. If the mongoose built-in validators are not enough for your validation logic, you have to create custom validators.
What is mongoose unique validator?
mongoose-unique-validator is a plugin which adds pre-save validation for unique fields within a Mongoose schema. This makes error handling much easier, since you will get a Mongoose validation error when you attempt to violate a unique constraint, rather than an E11000 error from MongoDB.
What are the different schema types in a mongoose schema What are some validations used in the schema?
All Schema Types
- required : boolean or function, if true adds a required validator for this property.
- default : Any or function, sets a default value for the path.
- select : boolean, specifies default projections for queries.
- validate : function, adds a validator function for this property.
How do I install Express validator?
- Installation. npm install express-validator. Also make sure that you have Node. js 8 or newer in order to use it.
- Documentation. Please refer to the documentation website on https://express-validator.github.io.
- Changelog. Check the GitHub Releases page.
- License. MIT License.
What is schema validation in MongoDB?
MongoDB has a feature called schema validation that allows you to apply constraints on your documents’ structure. Schema validation is built around JSON Schema, an open standard for JSON document structure description and validation.
Are mongoose fields required by default?
It seems that the default value of the required attributes of each field in mongoose schema is false.
What is Mongoose schema?
A Mongoose schema defines the structure of the document, default values, validators, etc., whereas a Mongoose model provides an interface to the database for creating, querying, updating, deleting records, etc.
How do you make a mongoose unique?
For example, below is how you can tell Mongoose that a user’s email must be unique.
- const mongoose = require(‘mongoose’); const userSchema = new mongoose.
- await User.create({ email: ‘[email protected]’ }); const doc = new User({ email: ‘[email protected]’ }); await doc.validate(); // Does not throw an error.
What is express validator used for?
According to the official website, Express Validator is a set of Express. js middleware that wraps validator. js , a library that provides validator and sanitizer functions. Simply said, Express Validator is an Express middleware library that you can incorporate in your apps for server-side data validation.