web commit by http://id.inelegant.org/: Diff against trunk of attachments plugin.

[ikiwiki.git] / doc / templates.mdwn

diff --git a/doc/templates.mdwn b/doc/templates.mdwn
index 71bf8a47add56756c6e072c3c26b7d434ef3703d..33e02b96df91f28b87d8004eabf19f7f61c278a0 100644 (file)
--- a/doc/templates.mdwn
+++ b/doc/templates.mdwn
@@ -1,9 +1,77 @@
 [[if test="enabled(template)"
-  then="This wiki has templates **enabled**."
-  else="This wiki has templates **disabled**."]]
+then="This wiki has templates **enabled**."
+else="This wiki has templates **disabled**."
+]]
+
+Templates are files that can be filled out and inserted into pages in the
+wiki.
+
+[[if test="enabled(template) and enabled(inline)" then="""
+
+## Available templates
 
 These templates are available for inclusion onto other pages in this
 wiki:
 
 [[inline pages="templates/* and !*/discussion" feeds=no archive=yes
 sort=title template=titlepage]]
+"""]]
+
+## Using a template
+
+Using a template works like this:
+
+       \[[template id=note text="""Here is the text to insert into my note."""]]
+
+This fills out the [[note]] template, filling in the `text` field with
+the specified value, and inserts the result into the page.
+
+A value can include any markup that would be allowed in the wiki page
+outside the template. Triple-quoting the value even allows quotes to be
+included in it. Combined with multi-line quoted values, this allows for
+large chunks of marked up text to be embedded into a template:
+
+        \[[template id=foo name="Sally" color="green" age=8 notes="""
+        * \[[Charley]]'s sister.
+        * "I want to be an astronaut when I grow up."
+        * Really 8 and a half.
+        """]]
+
+## Creating a template
+
+To create a template, simply add a template directive to a page, and page will
+provide a link that can be used to create the template. The template is a
+regular wiki page, located in the `templates/` directory.
+
+The template uses the syntax used by the
+[cpan HTML::Template](http://search.cpan.org/search?mode=dist&query=HTML::Template)
+perl module, which allows for some fairly complex things to be done.
+Consult its documentation for the full syntax, but all you really need to know
+are a few things:
+
+* To insert the value of a variable, use `<TMPL_VAR variable>`.
+* To make a block of text conditional on a variable being set use
+  `<TMPL_IF NAME="variable">text</TMPL_IF>`.
+* To use one block of text if a variable is set and a second if it's not,
+  use `<TMPL_IF NAME="variable">text<TMPL_ELSE>other text</TMPL_IF>`
+
+Here's a sample template:
+
+        <span class="infobox">
+        Name: <TMPL_VAR name><br />
+        Age: <TMPL_VAR age><br />
+        <TMPL_IF NAME="color">
+        Favorite color: <TMPL_VAR color><br />
+        <TMPL_ELSE>
+        No favorite color.<br />
+        </TMPL_IF>
+        <TMPL_IF NAME="notes">
+        <hr />
+        <TMPL_VAR notes>
+        </TMPL_IF>
+        </span>
+
+The filled out template will be formatted the same as the rest of the page
+that contains it, so you can include WikiLinks and all other forms of wiki
+markup in the template. Note though that such WikiLinks will not show up as
+backlinks to the page that uses the template.