how to check if a TV exists or is set for a given document?

115 Posts

highlander Reply #1, 19 years, 2 months ago

hi there,

i need to check to see if a TV exists for any given document and if it does return it along with another chunk of code and if it does exist or has not been set then return nothing.

my TV is called "ZoomImage" and is just an image input with html entity widget.

i’ve tried something along the lines of the following but can’t get it right

$thisID = $modx->documentObject['id'];
$tvs = $modx->getTemplateVarOutput('ZoomImage', $thisID);

if(isset($tvs['ZoomImage'])){
    return '<div id="ZoomButton"><a href="'.$tvs['ZoomImage'].'" rel="lightbox"><img src="assets/siteimages/layout/zoomin.gif" alt="Click to enlarge image" border="0" /></a></div>'
}

i know something like this is possible but i can’t find any usage example on how to use the getTemplateVar API functions.

thanks!

480 Posts

Taff Reply #2, 19 years, 2 months ago

Maybe getField would be a snippet you could use to save you reinventing the wheel?

It’s saved me a lot of messing around, a lot of times.

Taff

Adrian Lawley: www.adrianlawley.com

115 Posts

highlander Reply #3, 19 years, 2 months ago

hehe! superstar!!

thanks

16 Posts

Fritz Reply #4, 16 years, 10 months ago

Hi Highlander, I know that the getField can probably do what you want, but you were on to something with the getTemplateVarOutput, but instead of the

if(isset($tvs[’ZoomImage’]))

use !empty

if(!empty($tvs[’ZoomImage’]))

seemed to work for me....personally, I’d rather use a few lines of code instead of installing another snippet.

- Fritz