[processing] use algorithm description in modeler dependencies dialog

[nirvn]

This PR improves the modeler algorithm dependencies UI by using the algorithm's description (attached to the modeler algorithm item) instead of its default name. The reasoning behind this is to avoid duplicates when a given algorithm (for e.g. PostGIS execute SQL) is used more than once in a model.

A picture if worth a thousand words:

left: current sub-optimal UI, right: proposed improvement

I discovered this while building a complex model. Using the algorithm's default name had me check and uncheck every single duplicate name to try and find the right algorithm in the chain.

[NathanW2]

Nice work

On Thu, 10 Nov 2016 1:25 pm Mathieu Pellerin notifications@github.com
wrote:

This PR improves the modeler algorithm dependencies UI by using the
algorithm's description (attached to the modeler algorithm item) instead of
its default name. The reasoning behind this is to avoid duplicates when a
given algorithm (for e.g. PostGIS execute SQL) is used more than once in a
model.

A picture if worth a thousand words:
[image: untitled]
https://cloud.githubusercontent.com/assets/1728657/20163514/bb48f272-a72f-11e6-99e7-aba9e1db08a3.png
left: current sub-optimal UI, right: proposed improvement

I discovered this while building a complex model. Using the algorithm's
default name had me check and uncheck every single duplicate name to try

and find the right algorithm in the chain.

You can view, comment on, or merge this pull request online at:

#3741
Commit Summary

• [processing] use algorithm description in modeler dependencies dialog

File Changes

• M python/plugins/processing/modeler/ModelerParametersDialog.py
  https://github.com/qgis/QGIS/pull/3741/files#diff-0 (2)

Patch Links:

• https://github.com/qgis/QGIS/pull/3741.patch
• https://github.com/qgis/QGIS/pull/3741.diff

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