User Macro, Check for empty $body

[jonb]

https://confluence.atlassian.com/doc/user-macro-template-syntax-223906130.html

The $body object is available if you have specified that your macro has a body 

Is there a way to determine if the body is empty?  I've tried comparing to empty strings or true/false, but it seems that there's always some whitespace there (<p> or <br>).

I'm hoping to toggle some functionality based on if the user enters text in the body or not.

(I'm using the simply velocity context user macros)

[Bill Bailey · Accepted solution]

If you know exactly what is in the "empty" body, then you can compare it to that? Something like

if ($body=="<p> </p>")

Or more complex using RegEx

If ($body.matches("<p>\s+</p>"))

[jonb]

I will try something like that.  It seems like confluence adds it's own <p> tags within the body by default, even if the user does not.

I guess those tags evaluate as "whitespace" in html.  Is there a way to check for any/all combinations of that?  remove any whitespace html tags?

[Bill Bailey]

Yes, \s is for any white space character. To do some experiments to just print out the $body to see what it actually contains. It may be that $body itself is empty, but the macro instance is being wrapped with p tags when the contents are empty -- HTML wants the content to be wrapped with something.

I did check one of my test macros and found this code, which works in the opposite sense

#set($display="")
## Check if the body exists
#if($body)
#set($display = $body.trim())
#end

If this doesn't help you, please post your macro code.