Answered Test Template Variable image if has value then display value. If no value, display something else

Hi,

I'm new to Modx and I want to test if a user use a template variable for image then display that image. If not, display the featured image. I have this code:



That displays the "then" part but not the else. I'm sure that featured_image has value because when I do this:



It outputs a value. But when I put it on my first code with the condition, it <img> doesn't have a source. the "then" works and it only inputs <img> tag without the "src"

Thanks
van

Try it this way:

Thanks for the quick reply sottwell,

It still doesn't output what I need. I just realized that it seems that the "else" is the only one that is working.

I have two pages. Those two pages has an uploaded TV Featured Image but only one has TV Packery image. when I test it (with your code)



Both output is not empty. So it seems like tv.packery_item has a value even if it doesn't have any uploaded image to it.

What can be the problem?

thanks.

Quote from: sottwell at Apr 16, 2014, 07:54 AM

Try it like this:

[[+tv.packery_item_img:is=``:then=`<img src="[[+tv.featured_image]]">`:else=`<img src="[[+tv.packery_item_img]]">`]]

That works like a charm! Thanks sottwell.

I think that the problem is that the definition of "empty" may not be what we think it is. TVs aren't "empty"-empty; an empty string isn't always considered "empty". It's one of those programming things that perhaps a formal education in CS would have helped me to understand better. Mostly I just fumble around with trial-and-error until something works.

I'm coming from a WordPress background and I realized that there are advantages and disadvantages between this two CMS. There are points that ModX is easy to understand because it's just been three days since I've seen the four tutorial videos and I'm almost done with my site. But some variables in WordPress is easy to understand (memorize).

For example if testing for the featured image in wordpress its: if( (has_post_thumbnail) ) which is exactly what I needed.