Checking field for nil value

Solar2D Lua Language
#1

Probably another n00b question, but here goes.

I want to check a field to see if it has a nil value (ie: is blank)

If it’s blank i want to set its associated variable to 1. Otherwise, set the variable to the number of whatever is in the box.

    if (FieldA:getText()==nil) then

        NumA = 1

    else

        NumA = (tonumber(FieldA:getText()))

    end

However, if I leave the field blank, when I print NumA in terminal, it is nil, not 1.

If I put a value in Field A, it is displayed properly.

How do I get the functionality I’m looking for?

#2

What field are you talking about? Are you using text candy?

In any case a blank fields text is probably not nil but an empty string “” so try to compare with that.

#3

I’m using the beta version of the editField widget. When I printed out the value in terminal, it came up as nil, so I thought that’s what I was supposed to be testing against.

It seems to work now. Thanks.

#4

What field are you talking about? Are you using text candy?

In any case a blank fields text is probably not nil but an empty string “” so try to compare with that.

#5

I’m using the beta version of the editField widget. When I printed out the value in terminal, it came up as nil, so I thought that’s what I was supposed to be testing against.

It seems to work now. Thanks.