[Qgis-user] Trigger action from pyqgis

[Didac Busquets]

Hello,


In QGis I have defined a set of actions for a layer. I can trigger the actions by selecting the Actions icon in the toolbar, select the appropriate action, and then I get a cross mouse icon and can start clicking on features to actually run the action.

However, I'd like to start the process (i.e. get the "cross" icon) from PyQgis. I've looked at the QgsAction documentation, and it has a run method, but this is to apply it to a given feature. How can I run/start/trigger the action from python so that I can then start clicking on all the features I want the action to be applied to?


The use case is the following: I want to update field X of several features in my layer to a new value. I've designed a docked widget so that I can input the new value to use, and then I want to start clicking on the features that I want to update; then change the value and click on other features, and so on.

The action creation form (image attached) mentions that the action could be triggered from a button widget, but I'm not clear if that means I already need to know what feature I want it to apply to (which is not the case).

Any help will be appreciated.

Regards,

Didac




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