What is MVC Architecture?
The content itself is created and modeled by content editors based on a content structure defined by developers, who then manage its presentation on the live site via the MVC application. Generally, software is worked on by teams – a team might have a designer, engineer, and database architect. Separation of concerns means each team member can work on their piece at the same time, because logic has been separated into buckets. Separation of concerns is also great for maitenance – developers can fix a bug in one piece of code, without having to check out the other pieces of code. The controller contains logic that updates the model and/or view in response to input from the users of the app.
Use in web applications
Take a scenario where you are working with business; you can specifically deal with that and focus on the business logic building without depending on the view logic. The applications developed on this architecture offer greater scale of flexibility for programmers as well as the end-users. The processing of such applications is faster and improves the overall system performance. The architecture components of the MVC pattern are designed to handle different aspects of an application in development. The MVC design pattern serves to separate the presentation layer from the business logic.
The amount of responsibility assigned to each component and the communication flow between them depend on the individual implementation. For example, the controller might handle data validation, or it might pass that responsibility onto the model. Let’s imagine an end-user sends a request to a server to get a list of students studying in a class. The server would then send that request to that particular controller that handles students. That controller would then request the model that handles students to return a list of all students studying in a class. Xperience’s Pages application is a repository for content consisting of pages.
What is model-view-controller (MVC)?
Once they are processed, the data is sent back to the controller and then displayed on the view. MVC is often seen in web applications where the view is the HTML or XHTML generated by the application. Applications developed using the MVC architecture provides immense flexibility to the programmers as regards design, development, testing and maintenance as each component can be handled separately. MVC application development can be used for development, maintenance and testing the components. The programmers can conduct design, testing, maintenance and development very efficiently. For example, a Customer object will retrieve the customer information from the database, manipulate it and update it data back to the database or use it to render data.
- It processes all the business logic and incoming requests, manipulates data using the Model component, and interact with the View to render the final output.
- In the Car Clicker application, the model object contains an array of car objects with all the information (data) needed for the app.
- But this is easier said than done, especially when several developers need to update, modify, or debug a full-blown application simultaneously.
For example, the Customer view will include all the UI components such as text boxes, dropdowns, etc. that the final user interacts with. You can think of a web application https://remotemode.net/ as a Model View Controller design. MVC is popular in web applications, one of the reasons is because responsibilities are divided between the client & server.
MVC development overview
Development teams should have a good sense of how they conceptualize MVC before they start to design and build their applications. For example, in Figure 1, communication occurs between the view element and model and between the view component and controller. They might, for example, decide that the model should never communicate with the view or the entire structure should follow a strict linear process, as in Figure 2. So for example, our shopping list could have input forms and buttons that allow us to add or delete items. These actions require the model to be updated, so the input is sent to the controller, which then manipulates the model as appropriate, which then sends updated data to the view. The controller is the component that enables the interconnection between the views and the model so it acts as an intermediary.