Using Eval (or similar) to decide whether to render a chunk or not on screen

Hi all,

I have am Evo 1.0.8 site that I am working on, and I have a list of chunks to render within a page, for example {{chunk1}} , {{chunk2}}, {{chunk3}} and {{chunk4}}. Now, the contents of these chunks are template variables, and not all of the template variables are completed in some instances - in these instances I need to be able to evaluate to see if the TVs are complete and if so render the corresponding chunk, if they are empty then I do not want the chunk rendered. I have a checkbox TV to state whether the {{chunk}} should be rendered - but not sure on how to get it to render logically...

So..

If Chunk1Checkbox = "ON" > then render {{chunk1}} on screen
If Chunk2Checkbox = "ON" > then render {{chunk2}} on screen
If Chunk3Checkbox = "" > then do not render {{chunk3}} on screen
If Chunk4Checkbox = "" > then do not render {{chunk4}} on screen

Is this possible? If so how? I can't get my head around it...

Appreciate any insight / tips!



Thanks!

you can try to use one checkbox-group with input-options:



then you need to put just this one TV into your template

Quote from: Bruno17 at Jun 07, 2013, 08:03 PM

you can try to use one checkbox-group with input-options:

Chunk1=={{chunk1}}||Chunk2=={{chunk2}}||Chunk3=={{chunk3}}||Chunk4=={{chunk4}}

then you need to put just this one TV into your template

Thanks Bruno good plan. Another question...

I have x4 TVs already in use (as checkboxes) called Chunk1Small, Chunk2Small, Chunk3Small and Chunk4Small - these use the checkbox-group method as above, what I'd like to do is then render or not render Chunk1 based on the tick or no tick of Chunk1Small etc... is that possible?

There are a bunch of ways to do it.

Quote from: wshawn at Jun 10, 2013, 09:57 PM

[[+Chunk1Small:empty=``:notempty=`[[+Chumnk1Small]]`]]

Thanks wshawn, could you explain how this works in basic format - the code logic does not make much sense to me....?

Also - will this method work on Evo (1.0.8)? [ed. note: dubbs last edited this post 11 years, 6 months ago.]

Quote from: dubbs at Jun 11, 2013, 11:12 AM

Also - will this method work on Evo (1.0.8)?

It won't work in Evo, but you can do the same thing with PHx.:
http://wiki.modxcms.com/index.php/PHx/CustomModifiers#phx:ifnotempty

I totally missed your using Evo.

@bennyb - Thanks, I will have a look at that
@wshawn - No probs - thought that looked like a revo call