mirror of
https://git.code.sf.net/p/seeddms/code
synced 2024-11-26 23:42:11 +00:00
54 lines
2.2 KiB
Plaintext
54 lines
2.2 KiB
Plaintext
Extensions in SeedDMS
|
|
====================
|
|
|
|
Since verson 5.0.0 SeedDMS can be extended by extensions. Extensions
|
|
can hook up functions into certain operations, e.g.
|
|
uploading, removing or displaying a document. They can also be
|
|
used to modify some of the internal variables like the list of
|
|
translations and they can even replace classes in the core of
|
|
seeddms and hook up functions into certain operations in the core.
|
|
|
|
All extensions are located in the folder 'ext'. Each extension
|
|
has its own folder named by the name of the extension. The central
|
|
configuration of an extension is stored in conf.php.
|
|
The configuration sets the file and classname which is loaded
|
|
during initialization of the extension. The class has to have
|
|
a method init() which is called with any page request. The
|
|
configuration itself is cached and must be updated within
|
|
the extension manager if it was changed.
|
|
|
|
The integration into SeedDMS is done by hooks, class and file
|
|
overloading. SeedDMS manages
|
|
a globally available array of hooks ($GLOBALS['SEEDDMS_HOOKS']).
|
|
This array has the elements 'view' and 'controller'. All entries
|
|
in those array elements contain instances of self defined classes
|
|
containing the hook methods. For setting up the hooks in the view
|
|
'viewFolder' the following code is needed.
|
|
|
|
$GLOBALS['SEEDDMS_HOOKS']['view']['viewFolder'][] = new SeedDMS_ExtExample_ViewFolder;
|
|
|
|
class SeedDMS_ExtExample_ViewFolder {
|
|
...
|
|
};
|
|
|
|
The same approach is implemented for hooks called from the controller
|
|
logic (the op/op.*.php files).
|
|
|
|
$GLOBALS['SEEDDMS_HOOKS']['controller']['removeFolder'][] = new SeedDMS_ExtExample_RemoveFolder;
|
|
|
|
class SeedDMS_ExtExample_RemoveFolder {
|
|
...
|
|
};
|
|
|
|
Based on these two variants of adding hooks to the seeddms application code,
|
|
the seeddms core can be extended by implementing the controller hook 'initDMS'
|
|
which is called right after the class SeedDMS_Core_DMS has been initiated.
|
|
|
|
Beside hooks and callbacks another way of modifying seeddms is given
|
|
by overloading the files in the directory 'views' and 'controllers'. Both
|
|
directories contain class files with a single class for either running
|
|
controller or view code. If an extension provides those file in its
|
|
own extension dir, they will be used instead of the files shipped with
|
|
seeddms.
|
|
|