How do you Select an existing vector Layer and Edit it, using python?

Question

I'm developing a small plugin that needs to be able to select a vector layer programatically based on what layer the user has selected. However I'm not sure how to do so.

I believe I found the two elements I need to make it work: setCurrentLayer and selectedLayer from the QgisLegendInterface, but I'm not certain how they work or how they are implemented, I cannot either find any examples of them other than in the API.

Am I close? Or is there a better/proper form of doing this?

Answer 1

You can use the qgis.util.iface object which will give you access to all layers including the current selected layer:

myLayer = qgis.utils.iface.activeLayer()