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Joomla 1.5 Hosting - ASPHostPortal :: Creating a Hello World Module for Joomla 1.5

clock October 25, 2010 08:34 by author Jervis

A module is a lightweight and flexible extension that is used for page rendering. They are used for small bits of the page that are generally less complex and are able to be seen across different components.

You can see many examples of modules in the standard Joomla! install: - menus - Latest News - Login form - and many more.

This tutorial will explain how to go about creating a simple Hello World module. Through this tutorial you will learn the basic file structure of a module. This basic structure can then be expanded to produce more elaborate modules.

File Structure

There are four basic files that are used in the standard pattern of module development:
-
mod_helloworld.php
- This file is the main entry point for the module. It will perform any necessary initialization routines, call helper routines to collect any necessary data, and include the template which will display the module output.
-
mod_helloworld.xml
- This file contains information about the module. It defines the files that need to be installed by the Joomla! installer and specifies configuration parameters for the module.
-
helper.php
- This file contains the helper class which is used to do the actual work in retrieving the information to be displayed in the module (usually from the database or some other source).
-
tmpl/default.php - This is the module template. This file will take the data collected by mod_helloworld.php and generate the HTML to be displayed on the page.

Creating mod_helloworld.php

The mod_helloworld.php file will perform three tasks:
- include the helper.php file which contains the class to be used to collect the necessary data
- invoke the appropriate helper class method to retrieve the data
- include the template to display the output.

The helper class is defined in our helper.php file. This file is included with a require_once statement:

require_once( dirname(__FILE__).DS.'helper.php' );

require_once is used because our helper functions are defined within a class, and we only want the class defined once.

Our helper class has not been defined yet, but when it is, it will contain one method: getHello(). For our basic example, it is not really necessary to do this - the “Hello, World” message that this method returns could simply be included in the template. We use a helper class here to demonstrate this basic technique.

Our module currently does not use any parameters, but we will pass them to the helper method anyway so that it can be used later if we decide to expand the functionality of our module.

The helper class method is invoked in the following way:

$hello = modHelloWorldHelper::getHello( $params );

Completed mod_helloworld.php file

The complete mod_helloworld.php file is as follows:

<?php
/**
 * Hello World! Module Entry Point
 *
 * @package    Joomla.Tutorials
 * @subpackage Modules
 * @link http://dev.joomla.org/component/option,com_jd-wiki/Itemid,31/id,tutorials:modules/
 * @license        GNU/GPL, see LICENSE.php
 * mod_helloworld is free software. This version may have been modified pursuant
 * to the GNU General Public License, and as distributed it includes or
 * is derivative of works licensed under the GNU General Public License or
 * other free or open source software licenses.
 */

// no direct access
defined( '_JEXEC' ) or die( 'Restricted access' );

// Include the syndicate functions only once
require_once( dirname(__FILE__).DS.'helper.php' );

$hello = modHelloWorldHelper::getHello( $params );
require( JModuleHelper::getLayoutPath( 'mod_helloworld' ) );
?>

The one line that we haven’t explained so far is the first line. This line checks to make sure that this file is being included from the Joomla! application. This is necessary to prevent variable injection and other potential security concerns.

C
reating helper.php

The helper.php file contains that helper class that is used to retrieve the data to be displayed in the module output. As stated earlier, our helper class will have one method: getHello(). This method will return the ‘Hello, World’ message.

Here is the code for the helper.php file:
<?php

/**
 * Helper class for Hello World! Module
 *
 * @package    Joomla.Tutorials
 * @subpackage Modules
 * @link http://dev.joomla.org/component/option,com_jd-wiki/Itemid,31/id,tutorials:modules/
 * @license        GNU/GPL, see LICENSE.php
 * mod_helloworld is free software. This version may have been modified pursuant
 * to the GNU General Public License, and as distributed it includes or
 * is derivative of works licensed under the GNU General Public License or
 * other free or open source software licenses.
 */
class modHelloWorldHelper
{
    /**
     * Retrieves the hello message
     *
     * @param array $params An object containing the module parameters
     * @access public
     */   
    function getHello( $params )
    {
        return 'Hello, World!';
    }
}
?>

There is no rule stating that we must name our helper class as we have, but it is helpful to do this so that it is easily identifiable and locateable.

More advanced modules might include database requests or other functionality in the helper class method.

Creating tmpl/default.php

The default.php file is the template which displays the module output.

The code for the default.php file is as follows:

<?php // no direct access
defined( '_JEXEC' ) or die( 'Restricted access' ); ?>
<?php echo $hello; ?>

An important point to note is that the template file has the same scope as the mod_helloworld.php file. What this means is that the variable $hello can be defined in the mod_helloworld.php file and then used in the $hello file without any extra declarations or function calls.

Creating mod_helloworld.xml

The mod_helloworld.xml is used to specify which files the installer needs to copy and is used by the Module Manager to determine which parameters are used to configure the module. Other information about the module is also specified in this file.

The code for mod_helloworld.xml is as follows:

<?xml version="1.0" encoding="utf-8"?>
<install type="module" version="1.5.0">
    <name>Hello, World!</name>
    <author>Jervis</author>
    <version>1.5.0</version>
    <description>A simple Hello, World! module.</description>
    <files>
        <filename>mod_helloworld.xml</filename>
        <filename module="mod_helloworld">mod_helloworld.php</filename>
        <filename>index.html</filename>
        <filename>helper.php</filename>
        <filename>tmpl/default.php</filename>
        <filename>tmpl/index.html</filename>
    </files>
    <params>
    </params>
</install>

You will notice that there are two additional files that we have not yet mentioned: index.html and tmpl/index.html. These files are included so that these directories cannot be browsed. If a user attempts to point their browser to these folders, the index.html file will be displayed. These files can be left empty or can contain the simple line:

<html><body bgcolor="#FFFFFF"></body></html>

which will display an empty page.

Since our module does not use any parameters, this section is empty.

Reasons why you must trust ASPHostPortal.com

Every provider will tell you how they treat their support, uptime, expertise, guarantees, etc., are. Take a close look. What they’re really offering you is nothing close to what ASPHostPortal does. You will be treated with respect and provided the courtesy and service you would expect from a world-class web hosting business.

You’ll have highly trained, skilled professional technical support people ready, willing, and wanting to help you 24 hours a day. Your web hosting account servers are monitored from three monitoring points, with two alert points, every minute, 24 hours a day, 7 days a week, 365 days a year. The followings are the list of other added- benefits you can find when hosting with us:

- DELL Hardware
Dell hardware is engineered to keep critical enterprise applications running around the clock with clustered solutions fully tested and certified by Dell and other leading operating system and application providers.
- Recovery Systems
Recovery becomes easy and seamless with our fully managed backup services. We monitor your server to ensure your data is properly backed up and recoverable so when the time comes, you can easily repair or recover your data.
- Control Panel
We provide one of the most comprehensive customer control panels available. Providing maximum control and ease of use, our Control Panel serves as the central management point for your ASPHostPortal account. You’ll use a flexible, powerful hosting control panel that will give you direct control over your web hosting account. Our control panel and systems configuration is fully automated and this means your settings are configured automatically and instantly.
- Excellent Expertise in Technology
The reason we can provide you with a great amount of power, flexibility, and simplicity at such a discounted price is due to incredible efficiencies within our business. We have not just been providing hosting for many clients for years, we have also been researching, developing, and innovating every aspect of our operations, systems, procedures, strategy, management, and teams. Our operations are based on a continual improvement program where we review thousands of systems, operational and management metrics in real-time, to fine-tune every aspect of our operation and activities. We continually train and retrain all people in our teams. We provide all people in our teams with the time, space, and inspiration to research, understand, and explore the Internet in search of greater knowledge. We do this while providing you with the best hosting services for the lowest possible price.
- Data Center
ASPHostPortal modular Tier-3 data center was specifically designed to be a world-class web hosting facility totally dedicated to uncompromised performance and security
- Monitoring Services
From the moment your server is connected to our network it is monitored for connectivity, disk, memory and CPU utilization – as well as hardware failures. Our engineers are alerted to potential issues before they become critical.
- Network
ASPHostPortal has architected its network like no other hosting company. Every facet of our network infrastructure scales to gigabit speeds with no single point of failure.
- Security
Network security and the security of your server are ASPHostPortal’s top priorities. Our security team is constantly monitoring the entire network for unusual or suspicious behavior so that when it is detected we can address the issue before our network or your server is affected.
- Support Services
Engineers staff our data center 24 hours a day, 7 days a week, 365 days a year to manage the network infrastructure and oversee top-of-the-line servers that host our clients’ critical sites and services.



Joomla 1.5 Hosting - ASPHostPortal :: How to Create DropDown Menus in Joomla 1.5

clock October 21, 2010 09:31 by author Jervis

Here are the steps:

1. You need to install the Extended Menu module in your Joomla application.

2. Go to Extensions -> Module Manager and click on the newly installed Extended Menu module.

3. Step 3. Now you have to configure the Extended Menu module. It provides you with the ability to set many different variables that change the way your menus will work. You can, however, leave most of the settings in their default values. You can only change the Menu Style option to Tree List ,Active Menu Class to Both, Enable Menu Template to No and Element Id to Yes. In addition you have to select which menu should be loaded from the Menu Name drop-down box.



4. Now you have to organize your menus properly in order to make them display as a drop-down menus. For the purpose of this tutorial we will create a sub-enu of the Features menu and display it as a drop-down. To do this go to the Menus -> Top Menu(or if you changed the name of this menu - the one you have set) page and click on the New button. Once you set your menu to display the desired content, make sure you set its "parent" menu. In our case that will be the Features menu.



5. Finally you should add to your CSS file some lines that specify the behavior of the drop-down menu. You can simply add those lines at the end of the stylesheet file of your template (usually template.css):


ul#menulist_root li ul {
display:none;
}
ul#menulist_root li:hover ul{
display:block;
background:none;
}
ul#menulist_root li ul li{
background:#000000;
opacity:.85;
filter: alpha(opacity=85);
-moz-opacity: 0.85;
clear:both;
}
ul#menulist_root li ul li a{
background:none;
width:66px;
}
ul#menulist_root li ul li a:hover{
color:#AA0000;
background:none;
}


This style sheet will display a stylish, transparant drop-down menu once you point your mouse to the Features menu (i.e. on hover). You can use different CSS to achieve the looks you want for your menus.

Well done! you have successfully added a stylish horizontal drop-down menu to your Joomla website! At this point your page should look like this:



Reasons why you must trust ASPHostPortal.com

Every provider will tell you how they treat their support, uptime, expertise, guarantees, etc., are. Take a close look. What they’re really offering you is nothing close to what ASPHostPortal does. You will be treated with respect and provided the courtesy and service you would expect from a world-class web hosting business.

You’ll have highly trained, skilled professional technical support people ready, willing, and wanting to help you 24 hours a day. Your web hosting account servers are monitored from three monitoring points, with two alert points, every minute, 24 hours a day, 7 days a week, 365 days a year. The followings are the list of other added- benefits you can find when hosting with us:

- DELL Hardware
Dell hardware is engineered to keep critical enterprise applications running around the clock with clustered solutions fully tested and certified by Dell and other leading operating system and application providers.
- Recovery Systems
Recovery becomes easy and seamless with our fully managed backup services. We monitor your server to ensure your data is properly backed up and recoverable so when the time comes, you can easily repair or recover your data.
- Control Panel
We provide one of the most comprehensive customer control panels available. Providing maximum control and ease of use, our Control Panel serves as the central management point for your ASPHostPortal account. You’ll use a flexible, powerful hosting control panel that will give you direct control over your web hosting account. Our control panel and systems configuration is fully automated and this means your settings are configured automatically and instantly.
- Excellent Expertise in Technology
The reason we can provide you with a great amount of power, flexibility, and simplicity at such a discounted price is due to incredible efficiencies within our business. We have not just been providing hosting for many clients for years, we have also been researching, developing, and innovating every aspect of our operations, systems, procedures, strategy, management, and teams. Our operations are based on a continual improvement program where we review thousands of systems, operational and management metrics in real-time, to fine-tune every aspect of our operation and activities. We continually train and retrain all people in our teams. We provide all people in our teams with the time, space, and inspiration to research, understand, and explore the Internet in search of greater knowledge. We do this while providing you with the best hosting services for the lowest possible price.
- Data Center
ASPHostPortal modular Tier-3 data center was specifically designed to be a world-class web hosting facility totally dedicated to uncompromised performance and security
- Monitoring Services
From the moment your server is connected to our network it is monitored for connectivity, disk, memory and CPU utilization – as well as hardware failures. Our engineers are alerted to potential issues before they become critical.
- Network
ASPHostPortal has architected its network like no other hosting company. Every facet of our network infrastructure scales to gigabit speeds with no single point of failure.
- Security
Network security and the security of your server are ASPHostPortal’s top priorities. Our security team is constantly monitoring the entire network for unusual or suspicious behavior so that when it is detected we can address the issue before our network or your server is affected.
- Support Services
Engineers staff our data center 24 hours a day, 7 days a week, 365 days a year to manage the network infrastructure and oversee top-of-the-line servers that host our clients’ critical sites and services.



Joomla 1.5 Hosting - ASPHostPortal :: Add new module position to Joomla 1.5 Template

clock October 11, 2010 09:13 by author Jervis

Here are the steps:

1. open the index.php with the HTML editor and go to the line where you want to add the new module
2. insert the following code: <?php if ($this->countModules('newmodule)) : ?><div id="newmodule" ><jdoc:include type="modules" name="newmodule" style="xhtml" /></div><?php endif; ?>
3. save the file, go to the module manager and place the module on the "newmodule" position.
4. this new position will not be available in the position selector, but you just need to type in and save the module

Style the new module with CSS (style="xhtml")

1. #newmodule .moduletable {}
2. #newmodule .moduletable h3 {}
3. #newmodule .moduletable_menu {}

Add these codes to the template css file, and customize them as you want.

Reasons why you must trust ASPHostPortal.com

Every provider will tell you how they treat their support, uptime, expertise, guarantees, etc., are. Take a close look. What they’re really offering you is nothing close to what ASPHostPortal does. You will be treated with respect and provided the courtesy and service you would expect from a world-class web hosting business.

You’ll have highly trained, skilled professional technical support people ready, willing, and wanting to help you 24 hours a day. Your web hosting account servers are monitored from three monitoring points, with two alert points, every minute, 24 hours a day, 7 days a week, 365 days a year. The followings are the list of other added- benefits you can find when hosting with us:

- DELL Hardware
Dell hardware is engineered to keep critical enterprise applications running around the clock with clustered solutions fully tested and certified by Dell and other leading operating system and application providers.
- Recovery Systems
Recovery becomes easy and seamless with our fully managed backup services. We monitor your server to ensure your data is properly backed up and recoverable so when the time comes, you can easily repair or recover your data.
- Control Panel
We provide one of the most comprehensive customer control panels available. Providing maximum control and ease of use, our Control Panel serves as the central management point for your ASPHostPortal account. You’ll use a flexible, powerful hosting control panel that will give you direct control over your web hosting account. Our control panel and systems configuration is fully automated and this means your settings are configured automatically and instantly.
- Excellent Expertise in Technology
The reason we can provide you with a great amount of power, flexibility, and simplicity at such a discounted price is due to incredible efficiencies within our business. We have not just been providing hosting for many clients for years, we have also been researching, developing, and innovating every aspect of our operations, systems, procedures, strategy, management, and teams. Our operations are based on a continual improvement program where we review thousands of systems, operational and management metrics in real-time, to fine-tune every aspect of our operation and activities. We continually train and retrain all people in our teams. We provide all people in our teams with the time, space, and inspiration to research, understand, and explore the Internet in search of greater knowledge. We do this while providing you with the best hosting services for the lowest possible price.
- Data Center
ASPHostPortal modular Tier-3 data center was specifically designed to be a world-class web hosting facility totally dedicated to uncompromised performance and security
- Monitoring Services
From the moment your server is connected to our network it is monitored for connectivity, disk, memory and CPU utilization – as well as hardware failures. Our engineers are alerted to potential issues before they become critical.
- Network
ASPHostPortal has architected its network like no other hosting company. Every facet of our network infrastructure scales to gigabit speeds with no single point of failure.
- Security
Network security and the security of your server are ASPHostPortal’s top priorities. Our security team is constantly monitoring the entire network for unusual or suspicious behavior so that when it is detected we can address the issue before our network or your server is affected.
- Support Services
Engineers staff our data center 24 hours a day, 7 days a week, 365 days a year to manage the network infrastructure and oversee top-of-the-line servers that host our clients’ critical sites and services.



About ASPHostPortal.com

We’re a company that works differently to most. Value is what we output and help our customers achieve, not how much money we put in the bank. It’s not because we are altruistic. It’s based on an even simpler principle. "Do good things, and good things will come to you".

Success for us is something that is continually experienced, not something that is reached. For us it is all about the experience – more than the journey. Life is a continual experience. We see the Internet as being an incredible amplifier to the experience of life for all of us. It can help humanity come together to explode in knowledge exploration and discussion. It is continual enlightenment of new ideas, experiences, and passions

Corporate Address (Location)

ASPHostPortal
170 W 56th Street, Suite 121
New York, NY 10019
United States

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