[Qt-interest] Checkimg for dirty table model

[Stephen Kelly]

Petric Frank wrote:

> Hello Steven,
> 
> Am Dienstag, 14. September 2010, 20:42:53 schrieb Stephen Kelly:
>> Petric Frank wrote:
>> > Do i really have to iterate through all rows and columns to find a
>> > changed (and not committed) field?
>> 
>> Having never used that class I can only guess. But it seems you should
>> use submitAll.
> 
> That is done afterwards. But how to see if any updates have been done to
> the database (resulting from possibly changed data) ?
> 
> submitAll only gives (as i read the docs) only a success/no success info
> in return. But no info whether it was necessary to do any uptdate to the
> database - in other words there was something in the dirty list.

Use the source, Luke.

http://qt.gitorious.org/qt/qt/blobs/4.7/src/sql/models/qsqltablemodel.cpp

It looks like it tries to submit all dirty data, if one of them fails, it 
returns false. Otherwise it tries to repopulate the table and returns 
whether that worked. That seems to involve resetting the model.

Like I said I've never used that class so I'm not certain of anything it 
does. However, it really shouldn't matter to the outside whether calling 
submitAll did anything or not. If it does matter you may have some higher 
level design issues.

All the best,

Steve.

> 
> regards
>   Petric