Jexl if statements in location schemes

Rhythmyx Technical Discussion
1

Hi all just noticed the problem with $rx.cond.choose in another thread:

“The reason the $rx.cond.choose is deprecated is that it always evaluates both the true and false expressions.”

I have $rx.cond.choose in location schemes to check for cross site linking.

$rx.cond.choose($sys.crossSiteLink, $sys.site.url, $sys.variables.rxs_urlroot)

Can this be replaced with an if statement?

if($sys.crossSiteLink){$sys.site.url;} else {$sys.variables.rxs_urlroot;}

I have tried but classic Jexl if statement doesn’t appear to be acceptable in the location scheme?

2

Daniel,

Yes, JEXL if statements work in Location Schemes. The Location Schemes shipped with FastForward include JEXL if Statements.

Try rewriting your statement using the if statement to set the value of a variable:

if($sys.crossSiteLink){$prefix = $sys.site.url;} else {$prefix = $sys.variables.rxs_urlroot;}

As a historical note, the $rx.cond.choose function was implemented because the original release of JEXL used in Rhythmyx did not include an if. A subsequent release added if, making $rx.cond.choose superfluous. The Percussion function continues to work, but we deprecated it in favor of the native option now available in JEXL.

RLJII

3

I now face another problem as I don’t want the prfix to output anything if it is not a cross site link but if the variable is set to empty the location scheme is outputting a zero in my folder path???

4

OK OK so it can’t be empty to allow for a relative URL so I must set the variable.

5

Right I am going insane now. I need a variable to be able to = ‘’ i.e. be emty and not outpu anything in my location scheme in certain cisunstances and this fails.

Help!!!

6

Daniel,

In an out-of-the-box 6.5.2 installation, I tried setting the value to null if the condition was false:

if($sys.crossSiteLink){$prefix = $sys.site.url;} else {$prefix = '';}

This worked correctly for me. When there was no cross-site link, the prefix was null:

/InvestmentAdvice/EstatePlanning/item340.html

I also tried manually setting the value to zero ({$prefix = ‘0’;}), and the system returned the path with a 0 prepended.

At this point, the forum may not be the most effective way to troubleshoot your situation. I suggest you contact Tech Support for further assistance.

RLJII

7

Figured this one out!

For your information it appears that I cannot write two consecutive if statements in a location scheme.

So my JSR-170 query:

if($sys.crossSiteLink){$prefix = $sys.site.url;}else{$prefix='';}

if($sys.variables.rxs_subroot != 'none'){$subprefix = $sys.variables.rxs_subroot;}else{$subprefix="";}$prefix + $subprefix +  $sys.pub_path + $sys.item.getProperty

…is invalid and the second if statement is ignored.

The solution is to rewrite the query as one if statement:

if($sys.crossSiteLink && $sys.variables.rxs_subroot != 'none'){$prefix = $sys.site.url + $sys.variables.rxs_subroot;}else if($sys.crossSiteLink && $sys.variables.rxs_subroot == 'none'){$prefix = $sys.site.url;}else if(!$sys.crossSiteLink && $sys.variables.rxs_subroot != 'none'){$prefix = $sys.variables.rxs_subroot;}else{$prefix='';} $prefix + $sys.pub_path