Umesh

Nov 26, 2023

MVC Architecture

In the realm of backend development, the Model-View-Controller (MVC) architecture stands as a reliable design pattern, bringing order and efficiency to the development process. For a developer who is enthusiastic about Node.js understanding and leveraging MVC patterns can elevate their backend expertise to new heights.

In this article, let's dive into the intricacies of MVC architecture, exploring its components, benefits, and how it plays a crucial role in Node.js development.

Understanding MVC architecture:

MVC is a software design pattern that divides an application into three interconnected components Model, View, and Controller. Each component has a distinct responsibility which results in code modularity, maintainability, and scalability.

Model:

The Model component represents the application's data and business logic, this involves interacting with a database, handling data validation, and encapsulating the application's state. It acts as the backbone of the application, which is responsible for managing and processing data. This component only speaks to the controller.

View:

The View component is responsible for displaying the data to the user and handles user input. This could be a good old HTML/CSS template, dynamically generated pages by JavaScript frameworks, or using templating languages like EJS.

View represents the part where the user interacts with the website or a web application. It is the User Interface, users may click a button or fill up the form, it all happens in the View. It usually focuses on presenting the information, unaffected by where the data is coming from.

Controller:

The Controller component acts as an intermediary or as we call it a middleman between the Model and the View.

It involves routing logic, what does it mean?

It handles the HTTP requests coming from the View when the user interacts with the website, it may be pressing a button that fires up an event to send the request to the server.

When the Controller receives user input from the View through the Router, the Router checks if the input request is GET / POST / PUT / DELETE and processes the request to the Controller.

It coordinates the data flow between the Model and View, by using the Model to update the Database appropriately and finally refreshing the View which is the UI of a webpage.