Hi all, here is small tip, I learned today, so document it
I need a custom method in table extension. And then this method need to call in field mapping inside Grid. Interesting it is amazing easy.
So like other extensions. You have to create a class add a attribute and make in static class show it will extension of certain table. And now create a method Suppose I need extension for PurchRFQScoring table
public static class PurchRFQScoring_Extension
[SysClientCacheDataMethodAttribute(true)] //This attribute will cache your display method.
public static display Name ScoringName(PurchRFQScoring _this)
Now compile solution. And open the grid and from field mapping, set table In source. And in field you have to add method with class reference like