Below, we will document some little template tricks. Typically show content depending on something. Can be done directly in templates/*.tpl files or in Admin -> Look & Feel ->

Adding a print button only if current page is a wiki page

{if $page neq ''}	
 <a title="{tr}Print{/tr}" href="tiki-print.php?page={$page|escape:"url"}">
  <img src="pics/icons/printer.png"/>{tr}Print{/tr}
 </a> 
{/if}

Adding a "Hello John" indication

{if $user}	
 Hello {$user}
{/if}

Adding content only for a group

In content

• PluginGroup

In a template

{if $group eq "Admins"}
You are a member of the group {$group}
{/if}

Adding content only for a permission

Adding content only for a preference

{if $prefs.feature_wiki eq "y"}	
 The Wiki feature is on
{/if}

Display content conditional to current language

{if $prefs.language eq "fr"}
 <a href="accueil">
{elseif $prefs.language eq "es"}
 <a href="inicio">
{else}
 <a href="tiki-index.php">
{/if}

To make users switch language, you can add Module switch_lang or hard code some links such as:

{if $prefs.language eq "fr"}
 <a href="tiki-switch_lang.php?language=fr">-English-</a>
 -Français-
 <a href="tiki-switch_lang.php?language=es">-Español-</a>
{elseif $prefs.language eq "es"}
 <a href="tiki-switch_lang.php?language=en">-English-</a>
 <a href="tiki-switch_lang.php?language=fr">-Français-</a>
 -Español-
{else}
 -English-
 <a href="tiki-switch_lang.php?language=fr">-Français-</a>
 <a href="tiki-switch_lang.php?language=es">-Español-</a>
{/if}

How to know where something is in a template?

Admin -> Look & Feel Add HTML comment at start and end of each Smarty template (TPL)

New in 3.0, turn on "log_tpl" to add comments in templates (if you click view source, you can see which tpl was used to create it

How to show content just when in certain pages

So if you want to modify tiki-searchresults.php, you find templates/tiki-searchresults.tpl

For the container

templates/tiki.tpl is the master container.

Say you want to affect the master container based on the current page, you can do

{if $mid eq "tiki-searchresults.tpl"}
  bla bla
 {/if}

Debug

Put in a template or in Site Identity to have a popup with information on all the variables, at each page refresh.

{debug}

To avoid driving your users mad

{if $user eq 'admin'}
 {debug}
{/if}

Categories used in templates

Admin -> Category -> Categories used in templates (TPL)
(categories_used_in_tpl)

How to use? Something like
http://doc.tikiwiki.org/Category+Admin#Using_the_current_object_categories_in_a_tpl
http://dev.tikiwiki.org/Hello+World#To_do_something_specific_in_a_template_ex.:_tiki.tpl_conditional_to_the_current_item_being_in_a_category._Ex.:_different_header_picture.

Section

{if $section eq "blogs"}
  text shown just when in one of the blog pages
 {/if}

Perspective

The current perspective ID is not available to the templates. However, you can simply use the value of something that was overriden in this template. This could be in one of the Site identity fields.

{if $prefs.sitetitle eq "Workspace Sales"}
  {phplayers id=45 type=horiz css=y}
{else}
  {phplayers id=47 type=horiz css=y}
{/if}

Variables

Dynamic variables

Dynamic variables

Use current page as content

http://doc.tikiwiki.org/Advanced+Wiki+Syntax+usage+examples#How_to_display_URL_param_in_a_page_or_the_page_name_or_the_user_name

Related

Templates Best Practices
Advanced Wiki Syntax usage examples