[QGIS-Developer] Run processing model on selected features only

[Andreas Neumann]

Hi Mathieu, 

If I run "Save selected features" before the rest of my model I also
loose the whole context of widgets and relations, because it is a new
virgin layer then with no link to the original layer configuration
(widgets, relations) - right? 

Thanks for your reply, 

Andreas 

 On 2017-12-11 15:15, Mathieu Pellerin wrote:

> You could use the "save selected features" algorithm in your model against the vector layer input. 
> 
> On Dec 11, 2017 21:10, "Andreas Neumann" <a.neumann at carto.net> wrote:
> 
> Hi Mathieu, 
> 
> Thanks for the information. Unfortunately I cannot use "Feature Source" as an input in my model. 
> 
> Matthias told me that I have to use "Vector layer" as an input, because my model relies on certain features that aren't available on "feature source" inputs. I need to use refactor fields in a model with expressions support for relation_aggregates and represent_value (which requires information on widget configuration).  
> 
> Is there any chance this checkbox could also be introduced for "Vector layer" inputs? Should I open an issue? 
> 
> ------------------- 
> 
> I also find it quite confusing that the inputs come with zero documentation. I think for probably 99% of the users who are not devs it isn't obvious when to use which input. Could we introduce a very simple tooltip that explains with 1 or 2 sentences what the input implies - esp. for the "Vector layer" vs. "Feature Source" vs. "Layer field" ? 
> 
> Thanks, 
> 
> Andreas 
> 
> On 2017-12-11 15:01, Mathieu Pellerin wrote: 
> The global use only selected features option is gone (yay) in favor of a checkbox which can be activated on a per-use basis. I believe iterating through selected features only requires a vector source input. 
> 
> On Dec 11, 2017 20:57, "Andreas Neumann" <a.neumann at carto.net> wrote:
> 
> Hi, 
> 
> In QGIS master (version 3), with a Vector Layer input, I am failing to find the option to run a processing model only on the selected features. 
> 
> Can you please help me find the setting? I looked in the "Options" --> "Settings" --> "Processing" or watched out for a checkbox in the "Run model dialog" - but both did not show an option to restrict on selected features only. 
> 
> Thanks for a hint, 
> 
> Andreas 
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