Feature request #17949
Allow storing multiple outputs to the same geopackage in Processing
|Pull Request or Patch supplied:||No||Resolution:||fixed/implemented|
|Easy fix?:||No||Copied to github as #:||25845|
In a Processing algorithm with many output vector layers, if I set all to a geopackage file (like in my screenshot), only the last layer is written inside.
I would expect to have one geopackage, with all my layers inside.
I tried to add "layername=layer1" for instance. But Processing is raising an error about invalid output path.
[processing] Non-filed based outputs (e.g. postgis, geopackage)
options should be available for certain model outputs and script
We do this by swapping the test for non-file based output support
from checking only the algorithm's provider to instead checking
on a parameter-by-parameter basis.
This is done in order to support models. For models, depending
on what child algorithm a model output is based off, an individual
model may or may not have support for non-file based outputs. E.g
a model may generate outputs from a native qgis alg (supporting
these outputs) AND an output from a GDAL alg (with no support
for these outputs). In this case we need to enable or disable
the ui controls for non-file based outputs on an individual
For scripts (for now) we blindly just say all outputs support
non-file based formats. This is going to be the case most of
the time, since scripts will usually be written using PyQGIS
API. For the exceptions (e.g. scripts which call other algs
like GDAL algs) we probably should add some way for the script
to indicate whether an individual output supports this, but
for now we just say they all do.
#2 Updated by Nyall Dawson over 3 years ago
- File multioutput.png added
Note that this is already supported for native algorithms, by choosing the "Save to Geopackage" option, where you get prompted for a layer name. See attached screenshot.
We'd have to expose this to compatible models and scripts too.