I've read the docs for Google Soy/Closure templates, but can't find any way to check whether a Map is empty; I can only look up the map's value for a given key. Is there a way to find out the size of a Map?
My current workaround is to replace any empty maps with null
and then check for null
in the template, eg:
{if $myMap}
<!-- Do something that requires a non-empty map -->
{/if}
You can get the keys of the map using the keys
function, and then use length
on that, so this should work:
{if length(keys($myMap)) == 0}
...
{/if}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.