code 39 error network adapter s CREATING YOUR OWN TEMPLATES in VB.NET

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CHAPTER 6 s CREATING YOUR OWN TEMPLATES
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Figure 6-1. A site using a text-based template
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Figure 6-2. A site using a graphics-heavy template
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CHAPTER 6 s CREATING YOUR OWN TEMPLATES
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Quickstart to Creating a Hello Joomla! Template
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A Joomla template is made up of a number of files that work together to display the content held in the database. A template depends on at least two main files: templateDetails.xml: An XML metadata file used by Joomla to retrieve information about the template (name of the template, author, creation date, etc.). It also contains a list of the files that make up the template itself. The file list must include all index files, style sheets, images, media, and any other files used by the template. index.php: A file that contains the presentation code to display text, components, and modules. It is the central file that loads modules, parses the Joomla template data, and handles the primary display. Joomla templates are located on the web server in the \templates directory. Each template has its own directory and that directory must exactly match the name of the template. For example, the template rhuk_milkyway must be located in a directory named rhuk_milkyway. Joomla is case-sensitive, so if the template is named rhuk_milkyway, a directory named RHUK_MILKYWAY won t be recognized as holding the template. The \templates directory holds a separate folder for each template that you currently have installed. It may be helpful for you to examine the contents of one or more of these folders. You ll see that no matter how different the templates appear when presenting content, the type and number of files used to create them are very similar.
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s Note Templates have changed tremendously from Joomla version 1.0 to 1.5. While many older templates used the patTemplate engine as the core technology to render their output, Joomla 1.5 has done away with patTemplate and includes it only for backward compatibility. The object framework has also been rewritten from the ground up. Therefore, if you have experience with designing older templates, the implementation and structure have changed almost entirely. Examine the sample templates in this chapter as well as the site default template to understand the workings of the new template engine. If you simply want to use a Joomla 1.0 template with a 1.5 deployment, you will need to turn on the System - Legacy plug-in in the Plugin Manager.
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Creating the Hello Joomla! Template Files
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You ll create the two Hello Joomla template files using your text editor of choice (anything from Windows Notepad to a sophisticated program editor). To begin, you will need a new folder to hold these files.
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CHAPTER 6 s CREATING YOUR OWN TEMPLATES
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Create a folder named \tmplHelloJoomla in the \templates folder. If you re developing on a staging server, the path to the folder may look like this:
C:/Program Files/Apache Software Foundation/ Apache2.2/htdocs/templates/tmplHelloJoomla
sNote In an attempt to keep things simple, these instructions will have you manually installing the
template files and folders. Templates are generally stored as a ZIP archive, and an administrator uses the Extensions Install/Uninstall option to insert the template into the system. For development, creating a new ZIP archive each time you make a change to a file, particularly when frequent changes are likely, is impractical. Instead, you can either create the template directory manually if you re running Joomla on a staging server or upload it via FTP if a remote host is being used.
Create the following basic index.php file in your text editor and save it to the \tmplHelloJoomla folder:
<html> <head> <jdoc:include type="head" /> </head> <body> <jdoc:include type="message" /> <div class="center" align="center">Hello World!</div> <jdoc:include type="modules" name="debug" /> </body> </html>
This index.php file is simplified to the point where it doesn t even comply with simple HTML rules, such as including a DOCTYPE parameter. When you create a full template later in this chapter, you will see all of the bells and whistles that should be included with even a basic template. For the purposes of the Hello Joomla template, however, you can forego them to make the code as straightforward as possible. In the index.php file, the first Joomla code is the <jdoc:include type="head" /> statement, which inserts the site-specific information into the header. This directive will even insert the metadata used by search engines. For the home page of my web site, for example, the following information is sent to the visiting browser by the header include directive:
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