Question

I have an integer column that may have a number or nothing assigned to it (i.e. null in the database). How can I check if it is null or not?

I have tried

if(data.ColumnName == null) {     ... } 

This doesn’t work either (as SubSonic does not use nullable types (when applicable) for ActiveRecord)

if(data.ColumnName.HasValue) {     ... } 

If the value stored in the database is 0, then this wouldn’t help:

if(data.ColumnName == 0 /* or 0x000? */) {     ... } 

The same problem could also occur with DateTime fields as well.

Answer 1

Found out how to do it. SubSonic has a method for getting the value as an object to allow a null check:

if(data.GetColumnValue('Column Name') == null) {     ... }