[Qgis-developer] DataCustomProperties store labeling field by their id's and not names

[haubourg]

Hi all, (again)

DatacustomProperties for labelingfields ( New generation labeling ) are
stored as follow in qgs projects or qml style :

 <customproperties>
                <property key="labeling" value="pal"/>
                <property key="labeling/dataDefinedProperty0" value="27"/>
                <property key="labeling/dataDefinedProperty1" value="29"/>
                <property key="labeling/dataDefinedProperty10" value="24"/>
                <property key="labeling/dataDefinedProperty11" value="25"/>
                <property key="labeling/dataDefinedProperty12" value="26"/>
                <property key="labeling/dataDefinedProperty2" value="30"/>
                <property key="labeling/dataDefinedProperty3" value="33"/>
                <property key="labeling/dataDefinedProperty4" value="31"/>
                <property key="labeling/dataDefinedProperty5" value="28"/>
                <property key="labeling/dataDefinedProperty6" value="32"/>
                <property key="labeling/dataDefinedProperty9" value="23"/>
                <property key="labeling/enabled" value="true"/>
                <property key="labeling/fieldName" value="LblField"/>
                <property key="labeling/fontSize" value="8"/>
                <property key="labeling/multiLineLabels" value="true"/>
            </customproperties>

Everywhere else in QGIS projects are identified by their names, and that is
great because projects are much more stable this way. If a user (or a
program like GDAL and GML) changes fields order in data source, all custom
properties get mixed up, in a very 'Mapinfo'-like behaviour.   

Is it feasable to have custom properties identified by name  (for the
future) or id's (to make QGis compatible with old Qgs)? 
Is that a feature request I have to create? 

All the best
Régis





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