A journey through the Blog Example

In this chapter we accompany you on a journey through a simple TYPO3 extension. While traveling on this round trip you get to know more about the extension development with Extbase and Fluid and learn the most important stations and coordinates of the extension development with the help of a example extension. You first familiarize with the geography and the typical characteristics of a extension and find out, which processes run in the background. This knowledge will then help you in the creation of an own extension

If you search for a specific manual for the creation of an extension, chapter 4 will show you the right set of tools. However we recommend you to build the fundamentals for that in this chapter. The journey that lies ahead of us, could also have the title “Europe in five days. If you discover nice places, you should visit them later without the travel group.

It is a benefit, if you look into the original sourcecode while reading the text so the orientation in your own extension later will be much easier.

Note

If you use a debugger, it can be interesting to follow a full cycle in the single step modus. For that you have to set a breakpoint in the file Dispatcher.php. You will find this class - like every other class of Extbase also - in the folder typo3/sysext/extbase/Classes/.

At the end of this chapter you will find a short comparison of the traditional way to code an extension and an approach with Extbase and Fluid.

• First orientation
• The stations of the journey
• Calling the extension
• And... action!
• Get Blog from the Repository
• An excursion to the database
• Paths on the Data-Map
• Back in the controller
• Rendering the output with fluid
• Returning the result to TYPO3
• Alternative route: creating a new posting
• Automatic persistence of the domain logic
• Notes for migrating users