how can i retrieve objectId of parse server through req.params.id - node.js

Question

I am trying to retrieve a parse object with objectId in the show route on nodeJS. Below is my code to help you understand better.
//SHOW route
app.get("/books/:id", function(req, res) {
var Books = Parse.Object.extend("Books");
var query = new Parse.Query(Books);
query.equalTo("objectId", req.params.id);
query.find().then(function(foundBook){
res.render("show", {book: foundBook});
}, function(error) {
res.send("Error: " + error.code + " " + error.message);
});
});
Basically, The req.params.id does not return the objectID. when i try console.log(req.params.id), it returns the Title of the book stored in the database instead of the objectId which is important for linking to the /books/:id page.
Even when i try to retrieve all the objects from the database in the index route, i noticed that <%= book.get('objectId') %> is not displayed on the ejs page.
Please help me out of this. i am a beginner MEAN stack web developer but i am using parse server because the android and web applications would be sharing the same database on parse.com.
Thank You.
<% books.forEach(function(book) { %>
<div class="col-md-3 col-sm-6">
<div class="thumbnail">
<!-- this line of code gets the image content of the array and puts it in the img tag -->
<img src="<%= book.get('coverPictureLink') %>">
<div class="caption">
<h4><%= book.get('Title') %></h4>
</div>
<p>
<!-- This code adds the button and links it to the ID of the campground that was clicked on!-->
More Info
</p>
</div>
</div>
<% }); %>
</div>
Above is sample of the html page for displaying details of a particular book

Answer 1

I finally figured it out. The right way to retrieve object id on the html is book.id not book.get("objectId").
app.get("/books/:id", function(req, res) {
//find the book with provided ID
var Books = Parse.Object.extend("Books");
var query = new Parse.Query(Books);
query.get(req.params.id).then(function(book) {
console.log('retrieved! ' + book.id);
res.render('show', {book: book});
}, function(error) {
console.log('error occured');
res.send('could not be retrieved');
});
});
On the html file,
<p>
More Info
</p>

Answer 2

This is also the same if you are using node.js. with the parse server framework. Using .get('objectId') returns undefined values. Therefore you have to use.
for (i = 0; i < result.length; i++){
console.log('ID:' + result[i].id)
}