[QGIS-Developer] EditInPlace Processing script

[Arnaud Morvan]

Hello Matteo,

As far as I know, if your algorithm :

     does not change the table structure (geometry type, fields list and 
their types)

     is an instance of QgsProcessingFeatureBasedAlgorithm (output one 
feature for each input feature)

In brief:

     - If your algorithm output one feature for each input feature:

        => your should inherit from QgsProcessingFeatureBasedAlgorithm.

     - If your outputs features have same geometry type and same fields 
with same types:

        => you can put the flag on your algorithm as it can be used for 
in place editing.

When in place editing is checked in dialog, output features replace 
input features in source instead of being appended to an output.

Arnaud Morvan
Ingénieur logiciel
Tél: +33 (0)4 58 48 20 32

Camptocamp France SAS
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Le 09/04/2020 à 10:53, matteo a écrit :
> Hi all,
>
> is it possible to write a custom Processing script that can edit the
> input layer in place (with the core functionality of course)?
>
> In the documentation I found the method to check if the algorithm
> supports the in place editing [0] but not the method to set the script
> to support the functionality.
>
> There are a few python core algorithms with
>
> Thanks for any hint!
>
> Cheers
>
> Matteo
>
>
> [0]
> https://qgis.org/pyqgis/3.10/core/QgsProcessingAlgorithm.html#qgis.core.QgsProcessingAlgorithm.supportInPlaceEdit
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