Hi Nathan and others,
Thanks for developing the expression based labeling. Wow - it really
looks great.
I have two questions and a remark:
Question 1: the output preview of the label does not seem to work when
I use a field - is there something I need to do to enable it? I would
expect it to pull in the first record or some random record to retrieve
values?
Question 2: how does it handle empty fields (null values)? would string
concatenation still work or do we need to coalesce() like in PostreSQL?
Remark:
wouldn't it be cleverer to use your great new query builder and
introduce the concept of a "virtual column" in the data provider? This
way we could use your query builder for labeling, for tooltips, for read
only display in tables and forms and in the identify tool. Potentially
in the future in other scenarios as well? The query builder would then
extend the data provider and introduce a new virtual column which could
then be treated like all other columns, but read only.
Thanks a lot for your cool work and feature enhancement towards
labeling!
Andreas
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Andreas Neumann
Böschacherstrasse 10A
8624 Grüt (Gossau ZH)
Switzerland
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