SAIL code error

Question

Hi Guys, 
 I'm getting this error on SAIL code. I'm trying to use a gridfield (to load data, and delete a row) and I've a formlayout and inside that form, a sectionlayout (says grid is empty for a condition that rule!APN_isNull(ri!selection)) and another sectionLayout which has the gridfield. But I keep getting this error 
 
 "The contents field on a column layout may only contain components. Received Rule or Function Reference at index 1." 
 
 Is there a nullcheck I need to add to my Gridfield attribute or is there something I need to specifically need to look out for. 
 
 Thanks!

Rakesh Singh · Accepted Answer

From the error that you have mentioned it seems that you are trying to call an rule inside an column layout explicitly which is not allowed. However , for the gridfield can you provide some more information.

Ranveer · Answer

You can check two things to resolve this error: 
 
 Null Check - user {} instead of "" or null for SAIL component else condition. 
 You rule is not returning any component - for any layout (say column layout in your case) the result of rule should be either SAIL component or {}

santoshd378 · Answer

It seems one or more of the function(s) you have referenced in your grid are returning null, Try with the null check, for example use index function instead of querying data with dot operator.