Using the installer API to support package installation

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The script needs to be extended for sorting your files into folders within the archive, which are needed for the Joomla! extension installer API. See the recommended file locations below:

Development file Archive folder
/components/com_<component name>/** /site/** (mimic folder structure)
/administrator/components/com_<component name>/** /admin/** (mimic folder structure)
/language/en-GB/en-GB.com_<component name>.ini /language/site (flatten structure: discard language code subfolders)
administrator/language/en-GB/en-GB.com_<component name>.ini /language/admin (flatten structure: discard language code subfolders)
install.<component name>.php /
uninstall.<component name>.php /
install.<component name>.sql /admin
uninstall.<component name>.sql /admin
<component name>.xml The manifest file /

The Component Manifest File

Your component needs an xml-file declaring meta data (author, license, etc.), which files are included and indicates some special files to the installer API, like the included languages and SQL-scripts for (un)installing.

The most important xml-elements are explained below. There is a manifest DTD for Joomla! 1.5 components which can be used as a guide to the syntax, but it cannot be used to validate the manifest due to a problem with the 1.5 component installer. This should be corrected for Joomla! 1.6 onwards.

The root element

<install type="component|module|..." method="upgrade">
    <name>component name</name>

Enter the type of your extension, and indicate whether the installer shall be able to overwrite existing files. If the method attribute is not given, the installer will quit gracefully when encountering any existing file on the webspace.

The file list

    <files folder="site">

        <files folder="admin">

List all files which make up the code of your component, which will later go to the component subfolder of the site. Same for the administration part.

The language files