Simple solution for if's in MODX

Ok so I have seen some people try to answer this in the forums but it never comes out be a straight answer.

I am trying to find the correct way/package/snippet to use to make an element(TV) only display if something has been inputted in the manager.
If the user leaves that field blank (in my case it's a downloadable PDF) it should not appear on the page.

Example of this is here http://64.207.185.174/index.php?id=23
The right sidebar has a pdf field that is empty and I need it to disappear if it is left empty in the manager.

Any simple solutions?

Output modifiers would seem to be appropriate here:



(where pdf is the name of your TV)

Ideally you wouldn't need the ! (for no caching) or the else= modifier, but there seems to be some occasional bug people have learned to live with where an else= clause is sometimes needed or the logic won't work as expected. I would try it without the ! and :else=`` first because that's how it's supposed to work, but if it doesn't, add those things individually to see if it makes a difference.

Quote from: watou2 at Apr 22, 2013, 06:51 PM

Output modifiers would seem to be appropriate here:

[[!*pdf:notempty=`<a class="download" href="[[*pdf]]"></a>`:else=``]]

(where pdf is the name of your TV)

Ideally you wouldn't need the ! (for no caching) or the else= modifier, but there seems to be some occasional bug people have learned to live with where an else= clause is sometimes needed or the logic won't work as expected. I would try it without the ! and :else=`` first because that's how it's supposed to work, but if it doesn't, add those things individually to see if it makes a difference.

This isn't working. I tried all variation of it with "!" without the "!"

Sorry it didn't work, Jesse. If you paste the contents from your right sidebar as you see it in the manager, I might be able to suggest how to change it. My earlier reply was based on guesswork from what the actual resource shows.

Mahalo,
watou

Using output modifiers as mentioned should definitely work here. Of course there is also the If Extra which can be more legible but would be overkill in this case

I would do it with a snippet called PDF (this assumes that the TV is called pdf and contains just the path to the .PDF file):

Quote from: BobRay at Apr 23, 2013, 12:45 AM

I would do it with a snippet called PDF (this assumes that the TV is called pdf and contains just the path to the .PDF file):

[[!PDF]]

<!--?php
/* PDF snippet */

$tv = $modx--->resource->getTVValue('pdf'); // name of the TV here
$tv = urlencode($tv); // might need this if there are spaces in the file or dir names
return !empty ($tv) ? '<a class="download" href="' . $tv . '"></a>' : '';

Thanks Bob,

Output modifiers weren't working for some reason, but the snippet is a sure fire way. I appreciate you advice.
Side note:
Bob your resources on your blog are great, but you should really think about a redesign, contact me if your interested

Are you referring to BobsGuides in general, to my blog there, or to my other blog?

Quote from: BobRay at Apr 23, 2013, 10:08 PM

Are you referring to BobsGuides in general, to my blog there, or to my other blog?

Bob's Guides. Very useful, but not to friendly on the eye.
check me out if interested jesseshowalter.com

Periodically, I think about doing a little work on it, but I always have at least five or six projects I want to finish first.