On which QGIS version are you? I made this ticket a few weeks ago. You will see that the enum will give its index and not the string as you can think. https://github.com/qgis/QGIS/issues/32452
Nyall did some PR in 3.11. You need to use a CASE WHEN in your expression. You can open Nyall's model to check. Le ven. 13 déc. 2019 à 12:25, Richard Duivenvoorde <[email protected]> a écrit : > Just received a question from a user: > > He has a small processing model and wants to use an 'enum' (text) input > in the model as value for a new column. Which in the column is created > by the 'field calculator' algorithm. > > But we cannot find out how to get the 'chosen' value out of the > 'enum'-input (which are always 'strings'). Whatever we try the value of > the new column records are always NULL > > To reproduce: > - create an fresh model with an input vector layer > - create in 'enum' input call it 'choice' with 2 values 'blue', 'red' > - use the 'field calculator' algorithm to create a new string field > we thought that '@choice' would be the Formula (being the value of the > 'choice' input... > > BUT: the column is never filled with 'red' or 'blue'... > > Anybody a clue? > > Regards, > > Richard Duivenvoorde > > ps looking into > https://qgis.org/api/classQgsProcessingParameterEnum.html#details > and > https://qgis.org/api/qgsprocessingparameters_8cpp_source.html > dit not reveal anything to me... > _______________________________________________ > QGIS-Developer mailing list > [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
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