How to create schema model depend on have data element on mongoDB in NodeJs? - node.js

Question

How to create dynamically schema element depend on data have in Nodejs for MongoDB ? Which syntax can use for create, add , update data object element like as the follow json format.
WorkTasks: [
{
PerformedBy: "Joe",
StartDate: 2021-07-19T17:43:06.693+00:00,
EndDate: 2021-07-19T17:43:06.693+00:00,
Remarks: "Pad error",
Failure: "DDPP 20 - 090"
},
{
PerformedBy: "Karen",
StartDate: 2021-07-19T17:43:06.693+00:00
}
]

Answer 1

From Node.js Best Practices:
Though validation can be coded or relied upon classes and types
(TypeScript, ES6 classes) the community seems to increasingly like
JSON-based schemas as these allow declaring complex rules without
coding and share the expectations with the frontend. JSON-schema is an
emerging standard that is supported by many npm libraries and tools
(e.g. jsonschema, Postman), joi is also highly popular with sweet
syntax. Typically JSON syntax can't cover all validation scenario and
custom code or pre-baked validation frameworks like validator.js come
in handy.
Example - JSON-Schema validation rules
{
"$schema": "http://json-schema.org/draft-06/schema#",
"title": "Product",
"description": "A product from Acme's catalog",
"type": "object",
"properties": {
"name": {
"description": "Name of the product",
"type": "string"
},
"price": {
"type": "number",
"exclusiveMinimum": 0
}
},
"required": ["id", "name", "price"]
}
Example - Validating an entity using JSON-Schema
const JSONValidator = require('jsonschema').Validator;
class Product {
validate() {
const v = new JSONValidator();
return v.validate(this, schema);
}
static get schema() {
//define JSON-Schema, see example above
}
}