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First Look at vBulletin 4 Template Variables
Wayne Luke's Avatar
Wayne Luke
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Wayne Luke Wayne Luke is offline 06-30-2009, 10:00 PM

Reposted from my site at www.vbcodex.com

Actually, Scott's blog was the first look but I am going to talk about vBulletin 4's Template Variables today.

Back in the beginning, it was decided that vBulletin needed an easy to use template system. This also required that we allow PHP variables that could be evaluated and displayed to the end user in order to get the data out. This was simple and easy since PHP at its beginning was just a simple templating engine itself. However over time, it became apparent that we needed our own structures in order to coax HTML along and present dynamic data to the user while allowing the designer/site owner control and not requiring knowledge of PHP. With that the <if> and <phrase> tag constructs were developed in 3.0 and there was much rejoicing.

Later it became apparent that programmers wanted to be able to easily inject their own code into the templates without bothering the site owner. At first they used regular expressions and other replacement techniques. However as templates were updated or changed, they could break these techniques so the concept of Template Hooks were born. Now developers could assign their code to a specific variable and have it appear without the site owner doing anything. Unfortunately, template hooks aren't used as widely as they could be so the above techniques are still used.

The problem though with template hooks, <if> conditionals and <phrase> tags is that it made it very difficult to work with templates in tools like Dreamweaver and Go Live!. Syntax highlighting was off, variables didn't render and preview was a general mess. With the move to an object oriented template system in vBulletin 4, this would have become even worse over time. So the developers decided to move vBulletin's proprietary tags to their own namespace and create a better way of presenting variables within the templates.

For variables, they adopted a 'curly node' syntax that moves away from the traditional PHP variable system and tells the system how to process each type of variable. vBulletin 4 will ship with support for a variety of these variables for different purposes. The variable name tells vBulletin how to process the output. Today, I want to go over some of these.

Variable format:
Code:
{vb:type value.key}
This format tells vBulletin that it needs to process the variable through curly node syntax. The type tells vBulletin which class to use. If you look at the format above, you'll see there are no $ or [] used. This is an attempt to make the variable easier to use for non-programmers. So instead we'll use a 'dot' notation for variables. As a designer and developer, you'll use several types primarily. These are var, raw, phrase, rawphrase, stylevar and link. I'll talk about the first five today.

Examples:
Code:
$bbuserinfo[userid] => {vb:var bbuserinfo.userid}
$bbuserinfo[musername] => {vb:raw bbuserinfo.musername}
$vbphrase[welcome] => {vb:rawphrase welcome}
$stylevar[imgdir_misc] =>{vb:stylevar imgdir_misc}
VAR
Code:
{vb:var variable}
Allows you to output any variable. The output will be processed through htmlspecialchars_uni() to prevent any kind of potential XSS issues.

If your variable outputs HTML code, then you'll want to use raw instead.

RAW
Code:
{vb:raw variable}
This will bypass encoding the output to make it safe. This should be used to information that is considered safe and verified in PHP already. An example would be including another template within the current template like the header template. Raw should never be used with user input.

PHRASE
Code:
{vb:phrase phrase, param1, param2...}
Allows you to process and output phrases that are available to the page. The system will include as many parameters as listed in the parsing of the phrase. The phrase will be passed through htmlspecialchars_uni() to make it safe.

If the phrase includes HTML code, you should use rawphrase instead.

RAWPHRASE
Code:
{vb:rawphrase phrase, param1, param2...}
Same as phrase above but does not encode the output to make it safe. As with raw variables, this should only be used for data that is verified as safe within the PHP code.

STYLEVAR
Code:
{vb:stylevar variable}
This is a shortcode. You could use {vb:var stylvar.variable} as well. However this allows you to differentiate between stylevars and standard variables. It ultimately makes the code easier to read and should be used for any style variables that you want to use.

Summary
These are just some of the variables being used. There are other types that I will cover later. These include the previously mentioned link but also include date, time, number, if, escapejs, urlencode, and math. To finish today, I will leave you with a template example.

HTML Code:
<vb:if condition="$show['bbcodephp']">
    <div class="block bbcodeblock">
        <h2 class="blockhead">{vb:rawphrase php_code}<a name="php"></a></h2>
        <div class="blockrow">
            <h3 class="blocksubhead">{vb:rawphrase php_tag_performs}</h3>
            <ul class="codeblock">
                <li class="blockrow floatcontainer">
                    <div class="desc">[php]<span class="highlight">{vb:rawphrase value}</span>[/php]</div>
                    <div class="title" width="20%">{vb:rawphrase usage}</div>
                </li>
                <li class="blockrow floatcontainer">
                    <div class="desc">[php]<br />
                    $myvar = 'Hello World!';<br />
                    for ($<i></i>i = 0; \$i &lt; 10; \$i++)<br />
                    {<br />
                    &nbsp;&nbsp;&nbsp;&nbsp;echo $myvar . &quot;\n&quot;;<br />
                    }<br />
                    [/php]</div>
                    <div class="desc">{vb:rawphrase example_usage}</div>
                </li>
                <li class="blockrow floatcontainer">
                       <div class="desc">{vb:raw specialbbcode.php}</div>
                    <div class="title" width="20%">{vb:rawphrase example_output}</div>
                </li>
            </ul>
        </div>
    </div>
</vb:if>
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  #12  
Old 02-27-2010, 02:07 PM
TheSupportForum TheSupportForum is offline
 
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can anyone help solve this problem

i want to include the following within a template

PHP Code:
<!--#echo var="REMOTE_ADDR" -->
<!--#echo var="HTTP_USER_AGENT" -->
<!--#echo var="REQUEST_URI" -->
<!--#echo var="HTTP_HOST" --> 
how can i do this and do i ned to include anything in the php file for it to work within a template
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  #13  
Old 03-05-2010, 11:36 AM
Ronny Ronny is offline
 
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I can't convert my custom pages until i know how to access and loop with templates again. It is nice to know how to access one single var or single var in an array but how to loop? I did try my luck with ... (but without any success, yet ...)

Template i need to loop for output
PHP Code:
$namelist vB_Template::create('names_loop')->render(); 

And the template that should display the whole looped conteend
PHP Code:
$templater vB_Template::create('NAMES');
$templater->register('names'$data);
$templater->register('names_loop'$namelist);
print_output($templater->render()); 

$data is an array like
PHP Code:
$data = array(=> array('name' => 'testuser''age' => 100), => array('name' => 'testuser 2''age' => 99)); 

My "NAMES" template looks like this ...
Code:
<div>{vb:raw names_loop}</div>

My "names_loop" template looks like this ...
Code:
<div style="magin: 10px; padding: 10px;">
  <div>{vb:raw names.name}</div>
  <div>{vb:raw names.age}</div>
</div>
So far i can access all the vars in my array with {vb:var names.0.name} or {vb:var names.0.age} but i can't use it in templates to loop an output.

Can anyone help, please?

Thanks.
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  #14  
Old 03-17-2010, 10:35 PM
Ducks Ducks is offline
 
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I'm trying to use a variable in SHOWTHREAD, but it's not showing for some reason.

Hook Location: showthread_start
variable: $msgbox
template variable: {vb:raw msgbox}

What can be wrong?
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  #15  
Old 03-19-2010, 08:10 AM
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TalkVirginia TalkVirginia is offline
 
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Quote:
Originally Posted by Ducks View Post
I'm trying to use a variable in SHOWTHREAD, but it's not showing for some reason.

Hook Location: showthread_start
variable: $msgbox
template variable: {vb:raw msgbox}


What can be wrong?
Depending on where you want to place it. For example, if you want to place above the thread, use the showthread_above_posts template hook, then create a plugin using the showthread complete hook location. If you open showthread.php, examine around line 2176 and below.

Try this example:

1. Add a new custom template with the following contents:

Product: vBulletin (or if you are creating a mod, choose your product id)
Style: Style of your choice
Title: mytemplate

HTML Code:
<div id="pagetitle" class="pagetitle">
	<h1>Thread: <span class="threadtitle">{vb:raw msgbox}</a></span></h1>
</div>
2. Create a new plugin:
Product: vBulletin (or if you are creating a mod, choose your product id)
Hook Location: showthread_complete
Execution Order: Leave as default
Plugin PHP Code:

PHP Code:

$msgbox 
"Hello World";
$templater vB_Template::create('mytemplate');
$templater->register('msgbox'$msgbox);
$template_hook[showthread_above_posts] .= $templater->render(); 
Plugin Is Active: Yes
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  #16  
Old 03-23-2010, 08:37 AM
Ducks Ducks is offline
 
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Thanks, it's working now
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  #17  
Old 04-14-2010, 07:07 PM
Jaxel Jaxel is offline
 
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Does anyone know how to get forumIDs and bbuserinfo from this new system?

I'm trying to use it as follows, but it doesn't work...

Code:
header.php?fid={vb:var forum.forumid}&pid={vb:var bbuserinfo.field9}

I'm trying to use this in the HEADER template. It seems that you can no longer call forum and user information in the header template. So it seems forcing specific headers to specific forums is IMPOSSIBLE in VB4.
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  #18  
Old 04-18-2010, 09:03 AM
TheSupportForum TheSupportForum is offline
 
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i have a template i wish to add to the navbar template

i called it template2

i want to place my custom template above

Code:
<div id="breadcrumb" class="breadcrumb">
<ul class="floatcontainer">
i tried
Code:
 {vb:raw navbar2}
link this

Code:
 
{vb:raw navbar2}
<div id="breadcrumb" class="breadcrumb">
<ul class="floatcontainer">
but did not work, my template name is navbar2
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  #19  
Old 04-22-2010, 05:06 AM
Jaxel Jaxel is offline
 
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How would we use $vbulletin->options in this?

I am trying to use {vbptions media_thumb_dir} but its not working...
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  #20  
Old 04-25-2010, 03:20 AM
James T Brock James T Brock is offline
 
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So basically the variables were changed for no reason just so that non-coders could understand it? Those new variables look a lot more confusing to me.
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  #21  
Old 04-25-2010, 04:26 AM
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Zachery Zachery is offline
 
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Not sure why it was changed, but Jaxel:

{vb:raw vboptions.media_thumb_dir}
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