[Qt-interest] QLineEdit QDataWidgetMapper SQL NULL

[Linos]

Don't worry i have created a QLineEdit subclass with a property SQLText that i 
have used in the addMapping method of the QDataWidgetMapper.

Regards,
Miguel Angel.

Linos escribió:
> Hello,
> 	i am using QDataWidgetMapper with a QSqlRelationalModel, the problem i have 
> exactly it is that i am using QLineEdit with a column (alternative barcode for 
> items), that usually is null but when it is set is UNIQUE, the standard behavior 
> of QDataWidgetMapper for empty QLineEdit is to set the column on the model with 
> an empty QString, so i load a item without alternative barcode (NULL value) and 
> without make any change call submit in the widgetmapper and i get a empty string 
> in the column and after edit a second item i have a unique error from 
> Postgresql. What would be the better way to change this? Thanks.
> 
> Regards,
> Miguel Angel.
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