block16.js

// books.js

router.post('/new', (ctx, next) => {
	// Check if any of the data field not empty
	if (
		!ctx.request.body.id ||
		!ctx.request.body.name ||
		!ctx.request.body.author
	) {
		ctx.response.status = 400;
		ctx.body = 'Please enter the data';
	} else {
		let newBook = books.push({
			id: ctx.request.body.id,
			name: ctx.request.body.name,
			author: ctx.request.body.author
		});
		ctx.response.status = 201;
		ctx.body = `New book added with id: ${ctx.request.body.id} & name: ${
			ctx.request.body.name
		}`;
	}
	next();
});