FW: [Qgis-developer] RE : Debugging QGIS Bugs

Jürgen E. Fischer jef at norbit.de
Tue Jan 18 09:34:41 EST 2011

Hi Sunil,

On Tue, 18. Jan 2011 at 16:47:23 +0530, sunilraj.kiran wrote:
> I am working on the ticket [1]https://trac.osgeo.org/qgis/ticket/2974
> . The ticket deals with Attribute search, as  there can be three ways of
> NULL searches were possible.

I did change some things in r15054:

[FEATURE] feature form updates:
- make NULL value string representation configurable
- fix feature updates in feature form from attribute table
- add support for NULL values in value maps (comboboxes)
- use layer names instead of ids in drop down list when loading value maps from
- support feature form expression fields: line edits on the form which name
  prefix "expr_" are evaluated. Their value is interpreted as field calculator
  string and replaced with the calculated value.
- support search for NULL in attribute table

I originally didn't want to do the last point, but finally couldn't resist.  So
there is now a configurable string representation for null values - default is
"NULL".   By entering "NULL" (w/o the quotes) one can search for null values in
the attribute table. 


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