how shall i validate json against schema - json

Question

hi i am using MEAN STACK i want to validate JSON keys that comes from front end against mongoose schema. I am validating values but how shall i validate keys that com from client side for example.
var CategorySchema = new Schema({
name: {
type: String,
lowercase: true,
default: '',
trim: true,
unique: [true, 'Category name already exists'],
required: [true, 'Category Name cannot be blank'],
minlength: [4, 'Minimum 4 characters required'],
maxlength: [12, 'Category name cannot be That long']
},
parentCategory: {
type: String,
lowercase: true,
default: '',
trim: true
},
description: {
type: String,
lowercase: true,
default: '',
trim: true,
required: [true, 'description cannot be blank'],
minlength: [10, 'Very short description']
},
imageUrl: {
type: String,
default: '',
trim: true
}
});
what if i am providing this format
{
"IMAGEURL": "c:\abc.png", instead of imageUrl
"DESCRIPTION": "here is some description", INSTEAD OF description
"PARENTCATEGORY": "Men Wear", instead of parentcategory
"Name": "Shirts" instead of name
}
i am writing rest api that will be authenticated is it necessary to check these things. kindly help

Answer 1

For me json schema is so complicated. I suggest to use Json Pattern Validator
npm install jpv
it is very simple to use without any additional keys, and has many patterns to describe json.
import jpv from 'jpv';
var json = {
status : 'OK',
data : {
url : 'http://example.com'
}
}
var pattern = {
status : /^OK$/,
data : {
url : "[url]"
}
}
console.log( jpv.validate(json, pattern ) )