Looking for Best Approach For update one in Mongoose - node.js

Question

I am still kind of new to Mongoose in general. I am building my blogging app which has backend based on Node and MongoDB, I am using Angular for frontend.
I am creating my Restful API which is supposed to allow user click on a post and update it. However, I don't know for sure whether I am doing it the right way here.
This is the schema for my post:
const mongoose = require('mongoose');
// Schema Is ONly bluePrint
var postSchema = mongoose.Schema({
title: {type: String, required: true },
content: {type: String, required: true},
}, {timestamps: true});
module.exports = mongoose.model("Post", postSchema);
In my angular service, I have this function to help me to send the http request to my backend server, the id for this function comes from backend mongoDB, title and content is from the form on the page
updatePost(id: string, title: string, content: string) {
console.log('start posts.service->updatePost()');
const post: Post = {
id: id,
title: title,
content: content
};
this._http.put(`http://localhost:3000/api/posts/${id}`, post)
.subscribe(res => console.log(res));
}
It appears to me that there are at least couple of ways of approaching this for creating my API
Method 1 ( works but highly doubt if this is good practice):
here I am passing the id retrieved from mongoDB back to server via my service.ts file to avoid the 'modifying immutable field _id' error
app.put("/api/posts/:id", (req,res)=>{
console.log('update api called:', req.params.id);
const post = new Post({
id: req.body.id,
title: req.body.title,
content: req.body.content
});
Post.updateOne({_id: req.params.id}, post).then( result=> {
console.log(result);
res.json({message:"Update successful!"});
});
});
Method 2 I consider this is more robust than method 1 but still I don't think its good practice:
app.put("/api/posts/:id", (req, res)=> {
Post.findOne(
{_id:req.params.id},(err,post)=>{
if(err){
console.log('Post Not found!');
res.json({message:"Error",error:err});
}else{
console.log('Found post:',post);
post.title=req.body.title;
post.content=req.body.content;
post.save((err,p)=>{
if(err){
console.log('Save from update failed!');
res.json({message:"Error",error:err});
}else{
res.json({message:"update success",data:p});
}
})
}
}
);
});
I am open to all opinions in the hope that I can learn something from guru of Mongoose and Restful : )

Answer 1

Justification to Choose findOneAndUpdate() in this scenario in simple words are as follow:
You can use findOneAndUpdate() as it updates document based on the
filter and sort criteria.
While working with mongoose mostly we prefer to use this function as compare to update() as it has a an option {new:
true} and with the help of that we can get updated data.
As your purpose here is to updating a single document so you can use findOneAndUpdate(). On the other hand update() should be
used in case of bulk modification.
As update() Always returns on of document modified it won't return updated documents and while working with such a scenario like
your we always returns updated document data in response so we
should use findOneAndUpdate() here