Feature request #20953
Notify Signal from Postgres available
| Status: | Open | ||
|---|---|---|---|
| Priority: | Normal | ||
| Assignee: | - | ||
| Category: | Data Provider/PostGIS | ||
| Pull Request or Patch supplied: | No | Resolution: | |
| Easy fix?: | Yes | Copied to github as #: | 28772 |
Description
At the moment, a Notify signal can be caught in a layer from a Postgres database. It would be great if there was a free signal available (e.g not linked to a layer) to catch the Notify signal from the database (especially if working with Plugins)
A "LISTEN" SQL through psycopg2 in Python makes QGIS to eternally listen for this signal, blocking everything else and crashing eventually.
The only solution I've found so far is by creating a temporary layer which is updated through the python script and then using the signal "QgsMapLayer.repaintRequested".
Maybe a channel could be enabled within the project settings so we can access it through a signal?