Model-view-controller
Overview
Model-view-controller (MVC) is a software architecture pattern used for designing and developing user interfaces. It separates an application into three interconnected components: the model (data and business logic), the view (user interface), and the controller (input handling and flow control). This separation helps manage complexity, improve code maintainability, and enable parallel development.
History
The MVC pattern was first described by Trygve Reenskaug in 1979 while working on the Smalltalk programming language at Xerox PARC. The original concept was part of the larger Smalltalk-80 system. Later, the pattern gained widespread adoption in the web application frameworks of the 2000s, such as Ruby on Rails, Django, and ASP.NET MVC.
Features
- Separation of concerns – Each component has a distinct responsibility, reducing dependencies and making the code easier to test and modify.
- Reusability – The same model can be used with multiple views, and controllers can be reused across different applications.
- Parallel development – Different teams can work on the model, view, and controller simultaneously.
- Ease of testing – The model can be tested independently of the user interface, and controllers can be unit-tested with mock objects.
Variants
Several variations of MVC exist, including Model-view-adapter, Model-view-presenter, and Model-view-viewmodel. These adaptations address specific needs in mobile development, desktop applications, and web services.