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The page corresponding to the latest stable release can be seen in the Jelix 1.5 Manual

Features of your application should be grouped by module.

A module is a directory which contains :

  • controllers
  • business classes
  • templates
  • jdao files
  • jform files
  • localization files

In an application, you should have at least one module which you should create. In general this module is the main module, which contains for example the home page of your application.

Note that there is implicitly another declared module in your application: the "jelix" module, located in lib/jelix/core modules/jelix.

You can create as many modules as you want. Of course, files in a module have relations between them. For example, you can create a module by functional area. A module "news" will contain all the files you need to view and / or manage the news.

How you cut your code into modules is closely related to the degree of complexity of your application, and what you want to do in your application. For example, if some features could be shared with other applications, it is natural to have one or more modules dedicated to these needs. As a result, it will be easier to reuse the code. On the contrary, if your application has only 3 pages, it is not necessary to create 3 modules.

In short, cutting into modules depends upon your organization and your work habits. It is up to you to build an architecture that will leverage your ability to maintain and develop your application. Therefore there is no recipe.

Now, let's see how we create a module and a controller.