Newbie Question - snippet parameters

I know there has to be a way to do this. I’m trying to use a snippet call as a snippet parameter. Here is my snippet call:

[[Ditto? &documents=`[!xref_doclist? &data=`[*xref_casestudies*]` !]` &tpl=`ditto_cs_logo` &randomize=`1` &display=`3`]]

The snippet "xref_casestudies’ is working when called by itself. It returns a comma-separated list of document ID’s (i.e. 36,70,73,126,50,48).

This snippet call results in a "Modx Parse Error.

I also tried saving the value to a placeholder, but it wouldn’t accept the ph as a parameter either.

What am I doing wrong?

Thanks

I don’t see anything wrong. What is the output of the xref_doclist snippet? For this to work it needs to be a comma seperated list without the trailing comma like 1,2,3,4 - nevermind you already answered this

You can try inverting the [[ and [! so that it is [! [[ ]] !] I can never remember which is the right way to do it.

Also you could use a wrapper snippet to run these snippet in, this will eliminate the cache issues. A wrapper snippet is one that runs other snippets within one snippet.

[*xref_casestudies*] is defined as a TV by having the [*xxxx*] fromat, a snippet would be [[xxxx]] (cached) or [!xxxx!] (uncached)
If [*xref_casestudies*] is actually a snippet of code then you’d want [[xref_casestudies]] so as to alternate between cached and uncached in a nested snippet call.

Thanks for the reply. The [*xref_casestudies*] tv is needed by the xref_doclist to return the comma-separated list of document ids.

Are you unable to nest a TV inside of a snippet call inside of another snippet call? Am I violating some ModX rule here?


Thanks for the help. I’m amazed at how quickly folks respond here.

Best regards!
CD

Just to follow up, it is uncached outside and cached inside. So it should be [! [[ ]] !].

Are you unable to nest a TV inside of a snippet call inside of another snippet call? Am I violating some ModX rule here?

No rules violated here. You can definitely nest TV as well as any other placeholders in snippet calls. I think it is the cache order that is getting the error.

You are correct! Thank you. It works as expected now. The wiki showed an example of a nested snippet call, and I was following that example.

Thanks again!

The wiki showed an example of a nested snippet call, and I was following that example.

Which wiki post, maybe we should fix that.