Joomla Extension Installation

Question

I'm developing an extension (module) that I want to be compatible with Joomla 1.5, 2.5 and 3.0 if possible. My main issue is getting around the different XML files needed. I decided to create a manifest.xml file for Joomla 1.5 with the <install> tag and a mod_mymodule.xml file for Joomla 2.5/3.0 with a <extension> tag with the mod_mymodule.xml containing fieldsets etc. whilst the manifest.xml contains the <params>.

My issue is that my extension installs absolutely fine on Joomla 3.0 (on localhost). However when installing on a Joomla 2.5, nothing showed up under the parameters. What is the priority for Joomla 2.5 and why it using the manifest.xml file with the install tags instead of the mod_mymodule.xml file?

Does Joomla 2.5 prioritize an <install> tag at the top of an XML file over another XML file in the same directory with an <extension> tag?

Manifest File:

<?xml version="1.0" encoding="utf-8"?>
<install type="module" client="site" method="upgrade" version="1.5">
    <name></name> 
    <author>George Wilson</author> 
    <creationDate>05-Mar-2012</creationDate> 
    <copyright></copyright> 
    <license>http://www.gnu.org/licenses/gpl-3.0.html</license> 
    <authorEmail></authorEmail> 
    <authorUrl></authorUrl> 
    <version>1.1.1</version> 
    <description></description>
    <files>
            <filename module="mod_mymodule">mod_mymodule.php</filename>
            <filename>manifest.xml</filename>
            <filename>index.html</filename>
            <filename>helper.php</filename>
            <folder>assets</folder>
            <folder>tmpl</folder>
    </files>

    <languages>
        <language tag="en-GB">language/en-GB/en-GB.mod_mymodule.ini</language>
    </languages>

    <params>
        <param name="blah" type="text" default="5" label="Label" description="Description" />
    </params>
</install>

mod_mymodule.xml file:

<?xml version="1.0" encoding="utf-8"?>
<extension type="module" client="site" method="upgrade">
    <name></name> 
    <author>George Wilson</author> 
    <creationDate>05-Mar-2012</creationDate> 
    <copyright></copyright> 
    <license>http://www.gnu.org/licenses/gpl-3.0.html</license> 
    <authorEmail></authorEmail> 
    <authorUrl></authorUrl> 
    <version>1.1.1</version> 
    <description>Description</description>
    <files>
            <filename module="mod_mymodule">mod_mymodule.php</filename>
            <filename>mod_mymodule.xml</filename>
            <filename>index.html</filename>
            <filename>helper.php</filename>
            <folder>assets</folder>
            <folder>sql</folder>
            <folder>tmpl</folder>
    </files>

    <languages>
        <language tag="en-GB">language/en-GB/en-GB.mod_mymodule.ini</language>
        <language tag="en-GB">language/en-GB/en-GB.mod_mymodule.sys.ini</language>
    </languages>

    <install>
        <sql>
            <file driver="mysql" charset="utf8">sql/install.mysql.utf8.sql</file>
        </sql>
    </install>
    <uninstall>
        <sql>
            <file driver="mysql" charset="utf8">sql/uninstall.mysql.utf8.sql</file>
        </sql>
    </uninstall>

    <config>
        <fields name="params">
            <fieldset name="basic">
                <field name="moduleclass_sfx" type="text" default="" label="COM_MODULES_FIELD_MODULECLASS_SFX_LABEL" description="COM_MODULES_FIELD_MODULECLASS_SFX_DESC" />
            </fieldset>                 
        </fields>
    </config>
</extension>

Errors: Beneath position parameter: ( ! ) Notice: Trying to get property of non-object in ROOT\administrator\components\com_modules\views\module\tmpl\edit.php on line 50

Beneath ordering parameter ( ! ) Notice: Trying to get property of non-object in C:\wamp\www\joomla25\administrator\components\com_modules\views\module\tmpl\edit.php on line 61

It also says Module XML data not available at the bottom.

Update: Upon inspection it is definitely the manifest.xml file that is installing rather than the mod_mymodule.xml that I want the Joomla 2.5 to use.

Answer 1

struture of both should be manifest.xml :-

<?xml version="1.0" encoding="utf-8"?>
<install type="module" version="2.5" method="upgrade">
     <name>my module</name> 
    <author>George Wilson</author> 
    <creationDate>05-Mar-2012</creationDate> 
    <copyright></copyright> 
    <license>http://www.gnu.org/licenses/gpl-3.0.html</license> 
    <authorEmail></authorEmail> 
    <authorUrl></authorUrl> 
    <version>1.1.1</version> 
    <description>Description</description>

    <!-- Installation -->   
    <!--<install>
        <sql>
            <file driver="mysql" charset="utf8">mod_mymodule/sql/install.mysql.utf8.sql</file>
        </sql>
    </install>
    <installfile>install/install.php</installfile>
    <uninstall>
        <sql>
            <file driver="mysql" charset="utf8">mod_mymodule/sql/uninstall.mysql.utf8.sql</file>
        </sql>
    </uninstall>
    <uninstallfile>install/uninstall.php</uninstallfile>

    <languages>
        <language tag="en-GB">language/en-GB/en-GB.mod_mymodule.ini</language>
        <language tag="en-GB">language/en-GB/en-GB.mod_mymodule.sys.ini</language>
    </languages>-->

    <!-- Modules -->
            <files folder="mod_mymodule">
                <filename module="mod_mymodule">mod_mymodule.php</filename>
                <filename>mod_mymodule.xml</filename>
                <!--<filename>index.html</filename>
                <filename>helper.php</filename>
                <folder>assets</folder>
                <folder>sql</folder>
                <folder>tmpl</folder>-->        
            </files>
</install>

And the module file should be module.xml

<?xml version="1.0" encoding="utf-8"?>
<extension type="module" client="site" method="upgrade" version="2.5">
    <name>my module</name> 
    <author>George Wilson</author> 
    <creationDate>05-Mar-2012</creationDate> 
    <copyright></copyright> 
    <license>http://www.gnu.org/licenses/gpl-3.0.html</license> 
    <authorEmail></authorEmail> 
    <authorUrl></authorUrl> 
    <version>1.1.1</version> 
    <description></description>
    <files>
            <filename module="mod_mymodule">mod_mymodule.php</filename>
            <filename>mod_mymodule.xml</filename>
           <!-- <filename>index.html</filename>
            <filename>helper.php</filename>
            <folder>assets</folder>
            <folder>tmpl</folder>-->
    </files>

    <config>
        <fields name="params">
            <fieldset name="basic">
                <field name="moduleclass_sfx" type="text" default="" label="COM_MODULES_FIELD_MODULECLASS_SFX_LABEL" description="COM_MODULES_FIELD_MODULECLASS_SFX_DESC" />
            </fieldset>                 
        </fields>
    </config>
</extension>

hope this help you only change params for 1.5 teated on my demo and commit out if you want include some more file please create a module package and your sturuture sholu be

a. manifest.xml b. mod_mymodule (dir) and zip both in one. not add manifest in module folder

Answer 2

Your second xml is missing the version (joomla! version, not your extension). Please see below:

    <extension type="module" client="site" method="upgrade" version="2.5">