History: Template Overview

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            ''(from [http://doc.tikiwiki.org/tiki-index.php?page=Styles+and+Themes|Style and Themes] - to be updated)''

!! How to modify .tpl files

__About Smarty__
The .tpl (template) files are written using the Smarty template language, which has its own syntax, etc. Smarty is mainly used for defining environment variables and the logic that follows (like who to show what when how). See [http://smarty.php.net/|smarty.php.net].

Modifying the .tpl files isn't recommended if the site's appearance can be changed using CSS alone; sometimes it is necessary, though, but be sure to be familiar with Smarty syntax and how Tiki uses Smarty files before going this route. 

!! The Template Tree

Tiki's templates are called in a specific order within the code, so it's good to know what is a parent of what, particularly for the main few used for the basic layout of the site.

!!! Templates (most frequently modified)
* ''tiki.tpl'': the main template defining the layout, which calls:
** ''header.tpl'': the HTML head section (avoid modifying, if possible)
** ''tiki-site_header.tpl'': site Look & Feel options and/or menu
** ''tiki-top_bar.tpl'': possibly menu and search form
** ''tiki-bot_bar.tpl'': bottom banner links/credits bar

(Whether ''tiki-site_header.tpl'' or ''tiki-top_bar.tpl'' or both needs to be modified depends on what theme files are used as a starting point for a custom theme. ((Themes_for_TW2|New themes)) tend to use ''tiki-site_header.tpl'' for more Look & Feel components, and reserve ''tiki-top_bar.tpl'' for the menu (usually a CSS, or suckerfish, menu) and sometimes the search form.)

!!!! The new power of L&F custom code
In Tiki 4 and Tiki 5, a number of custom code text areas have been added on the Look and Feel admin page that may make it unnecessary to modify the relevant .tpl file, depending on what the desired customization is. This course should be considered first as it's easier to update the site to new Tiki versions when there are fewer file customizations.

!!! Smarty template start/end tags
To put Smarty template beginning and end tags in comments in the final page source, as of Tiki 4 there is an option in Admin Features(tiki-admin.php?page=features), under the Developer tab, called "Smarty Template usage indicator". As indicated on that page, "Use only for development, not in production because these warnings are added to emails as well, and visible to the users." You can then check the final page source to see what code is produced by what Smarty template file.

!!! Theme-Specific Templates
To modify the layout of Tiki in your theme, edit theme-specific copies of default Tiki template files. While CSS editing is used to specify the details of page appearance, it may be necessary to edit template files to make major rearrangements of items on the page. But an increasing amount of flexibility is being added to Tiki via admin configuration, which tends to make template editing unnecessary.

!!! Overriding templates 
The template files for each theme are stored in a directory with the same name as the theme (less the ".css" file type indicator) in the ''templates/styles'' directory -- for example, ''templates/styles/screensite''. 

A theme's files will override any default template file. You just need to put a modified template file in the directory ''templates/styles/custom_theme_name''.

For example, if we want to modify the forum listing in our ''screensite'' theme, we'd just place a copy of the file ''templates/tiki-forums.tpl'' in ''templates/styles/screensite/'' and then edit the new theme-specific copy of the ''tiki-forums.tpl'' file.  

Tiki will substitute whatever is in your custom theme directory for the .tpl files in the default directory.

This technique works on files in the subdirectories, too.  That is, to change the application menu in your theme, just copy the file ''mod-application_menu.tpl'' from ''templates/modules/'' to ''templates/styles/custom_theme_name/modules/''.

It's recommended that as few template files be customized as possible, and the customizations kept as minimal as possible, in order to keep the maintenance and updating of the files easier. The more extensive the customization, the harder to keep in sync with the functionality of Tiki as it advances.