Allow optional outputs for processing models

[qgib]

Author Name: Olivier Dalang (@olivierdalang)
Original Redmine Issue: 20036

Redmine category:processing/modeller

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Hi !

When running a processing model, it happens that you're not interested in all available outputs. In that case, you just leave those outputs as "[Create temporary layer]" and maybe uncheck "Open output file after running algorithm".

In batch mode however, it seems all outputs are required. You get @wrong or missing output value: result (row 1)@ if you decide not to set some specific outputs.

This is slightly annoying as it means you have to fill in the forms and then remove the files from your hard drive.

It seems to happen only for processing models, not for regular algorithms.

Cheers,

Olivier

[qgib]

Author Name: Nyall Dawson (@nyalldawson)

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• subject was changed from Cannot batch run processing models without choosing files for all outputs to Allow optional outputs for processing models
• tracker_id was changed from 1 to 2