Hi victor,
I'd like to add optional parameter in Model.
I replied in the PR and I would like to know where changes are needed.
Thanks
Le 24/10/2015 15:35, Victor Olaya a écrit :
I replied in the PR in gitHub ;-)
2015-10-23 18:17 GMT+02:00 René-Luc Dhont <[email protected]>:
Hi victor,
Because codes are sometimes better than text, I made a pull-request to
propose optional parameters in script and model.
https://github.com/qgis/QGIS/pull/2396
In my code, all parameters can be optional or not required and didn't modify
the parameters value setter.
I don't know if optional number, string or extent has to be None or default
value if it is not set by the user.
Reviews are welcome
Regards,
René-Luc
Le 11/09/2015 13:44, Victor Olaya a écrit :
Aside from the syntax...I am not sure it is a good idea...
I mean, it is a good idea to allow optional parameters...but that is a
big change in the current semantics of Processing algorithms. Some
params can be optional (layers, tables), and have a setting for that.
When they are not used, their value is None, but the value has to be
passed (so an optional layer param is a layer param that can be None).
Allowing optional parameters would require some importante changes in
many places in Processing, specially in the modeler, so i would
suggest some more discussion about this.
Not sure if that can maybe be added to the WPS plugin part, so nothing
changes in Processing, but the WPS service exposes the parameters as
optional and then fills the values with a default one before actually
callin gprocessing.
Hope this helps
2015-09-11 11:28 GMT+02:00 kimaidou <[email protected]>:
Hi
I would personaly use the second : add a new property for each input. If
not
given, this means the input is mandatory, if "opt" is present, make it
optionnal.
Cheers,
Michael
2015-08-28 14:53 GMT+02:00 René-Luc Dhont <[email protected]>:
Hi Victor,
I'm working on porting QGIS Processing to Web Processing Service, and I
have found that all parameters in a QGIS Processing script are
mandatory.
It would be useful to power define some parameters as optional.
I think that I can propose some code but I'd like to know what is your
preferred way of defining optional parameters :
* an header line started by 'optional' with a list of parameter name
separated by comma
##optional=SEGMENTS,DISTANCE
* an extra value at the end of the header line
##SEGMENTS=number 5 opt
Thanks
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