How to use async/await In Mongoose
Async/await is a modern JavaScript syntax for handling asynchronous code in a synchronous-like manner. You can use async/await with Mongoose methods that return promises, such as save().
Example:
async function saveProduct() {
try {
const newProduct = new Product({ name: "Example Product", price: 99.99 });
const savedProduct = await newProduct.save();
console.log("Saved Product:", savedProduct);
} catch (err) {
console.error("Error:", err);
}
}
saveProduct();
Explanation:
- async function saveProduct() { … }: Defines an asynchronous function named saveProduct.
- const savedProduct = await newProduct.save(): Uses the await keyword to wait for the save() method to resolve before continuing execution. The resolved value is assigned to savedProduct.
- The try/catch block handles both successful and error scenarios.
Output:
The output will be similar to the previous methods, with the savedProduct object containing the updated product.
Getting the Object after Saving an Object in Mongoose
In Mongoose, the popular MongoDB object modeling tool for Node.js, it’s common to perform operations such as saving an object to the database and then retrieving the updated object for further processing. In this article, we’ll explore how to accomplish this task using Mongoose, covering concepts such as callbacks, promises, and async/await syntax. We’ll provide detailed examples and explanations to ensure a thorough understanding, even for beginners.