Calling Macro function in Velocity template

java apache velocity
user747858 picture user747858 · Aug 2, 2011 · Viewed 21.9k times · Source

I am trying to figure out how to return a value from a velocity macro call and assign it to a varaible

my macro function looks something like this. its once in common shared macros files

#macro(getBookListLink, $readingTrackerResult)
   $readingTrackerResult.getBookListLink()
#end

I am need to assign the result of this macro to a variable in another velocity template file

I tried something like this

#set($book_list_link = #getBookListLink( $readingTrackerResult ))

but did not work. I tried with #,$ and with nothing in front of function getBookListLink. but nothing worked. Can not i return from a macro? something wrong with my macro?

But, As such if i call #getBookListLink( $readingTrackerResult ) separately in html file. it works and i can print the result to UI. But not able to assign to a variable.

Answer

Nathan Bubna picture Nathan Bubna · Aug 2, 2011

Macros are not functions; they are for rendering output. However, if you don't mind losing the type and getting the result as text...

#set( $book_list_link = "#getBookListLink( $readingTrackerResult )" )

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