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Glossary: Extbase

Extbase

Extbase is TYPO3’s official MVC framework for building custom extensions. It is based on the Model-View-Controller (MVC) design pattern and provides a modern, object-oriented foundation for TYPO3-specific development.

Use Cases for Extbase

Extbase is typically used to create structured extensions, such as:

Database-driven applications (e.g. news, events, products)
Custom frontend input and display logic
Deep TYPO3 integration with reusable components

Structure of Extbase (MVC Pattern)

Model: Defines the data structure and business logic
View: Responsible for output – usually using Fluid templates
Controller: Handles flow control and user interaction

Advantages

Clear separation of concerns (data, logic, output)
Maintainable and reusable codebase
Full integration with TYPO3’s core architecture
Well-documented and widely supported in the community

Typical Use Case

Extbase is commonly used for complex TYPO3 extensions where structured data needs to be stored, edited, and presented – such as in event management, shop systems, or recruitment portals.

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