Section: Creating a module
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A module is a directory with a precise file-system hierarchy. Modules are groupped in one or several directories called modules group, or repository of modules.
Declaring a modules group ¶
Module groups are declared in the configuration property modulesPath. It's possible to set a value of one or several relative or absolute paths separated by commas. It's also possible to use directory codes with a particular notation:
The following directory codes are available:
- application directory
This prevents from having really relative paths and is easier to maintain. For example:
modulesPath = lib:jelix-modules/,app:modules/
It declares two module groups :
jelix-modules, subdirectory of jelix's
modules, subdirectory of your application path.
Modules from both directories could be activated and installed in your application.
Directories of a module ¶
A module is a directory having at least one file, module.xml, containing some informations about the module: version, dependencies...
And you have some sub-directories, depending of what the module provides, and each containing specific files:
- controllers, corresponding to some URL
- business classes, librairies, listeners for events etc.
- file containing the content to send to browsers
- response object that the module can provide for the whole application
- properties files to localize templates or content generated by controllers
- classes generating some part of a web page
- files declaring mapping to a database
- file declaring forms
- scripts to install or to upgrade the module
- scripts for the command line
- plugins for various components (jDb, jTpl...)
- CSS, JS, images files. There are accessible from a browser, by calling a specific controller of the "jelix" module
- files doing unit tests for PHPUnit or Simpletest
Create a module ¶
It's as simple as creating a sub-directory of a modules group, and filling it with controllers, persistent objects ...
createmodule command helps you to create all this directories, and to
activate and install automatically the new module:
php cmd.php createmodule mymodule
This command creates the module "mymodule" in your application's sub-directory
modules. It creates also some sub-directories as well as a default
Important: The name of modules are used in the name of some classes
generated automatically by Jelix. So you mustn't use other characters than a-z,
A-Z, 0-9 and
By default, the module is created in the
modules/ directory of the
application. Perhaps you would like to create it into an other modules group. In
this case, indicate the path of the repository after the module name. You can
use the same syntax as in
modulesPath (an absolute path or a relative path
with "lib:" or "app:".
This example creates a "supermodule" module into the
directory which is itself into the
lib directory provided with jelix.
php cmd.php createmodule supermodule lib:shared-modules/
See the online help of the
createmodule command to know other options.
Setting the version and dependencies ¶
After creating the module, you should verify if the default initial version is ok for you (0.1), and set dependencies. It is very important for the installation system of Jelix.
You can indicate the version to the
createmodule command, with the
php cmd.php createmodule -ver 1.0 supermodule
You can also modify the version in the
module.xml file generated in the module, if needed.
You can set dependencies of the module. Dependencies are modules necessary to
execute the new module. In the
<dependencies> element in the
module.xml file, add a
<module> element for each required module.
<dependencies> <jelix minversion="1.3" maxversion="1.3.*" /> <module name="jauth" minversion="1.2" /> <module name="anOtherModule" minversion="1.0" maxversion="1.4.*" /> </dependencies>
maxversion are optional.
For more details about the content of module.xml, read the corresponding chapter.