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Is it possible to open saved layout in layout designer(print composer) with Python?

QGIS Python API:

openLayoutDesigner(self, layout: QgsMasterLayoutInterface) → QgsLayoutDesignerInterface

Opens a new layout designer dialog for the specified layout, or brings an already open designer window to the foreground if one is already created for the layout.

New in version 3.0.

I have tried iface.openLayoutDesigner("layoutname") in python console, but i get error:

TypeError: QgisInterface.openLayoutDesigner(): argument 1 has unexpected type 'str'

I don't understand what argument 1 should be.

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You should get the layout to open, first. Then pass the layout instance to openLayoutDesigner() method. You can't open a layout by passing its name to that method. The method expect you to pass QgsMasterLayoutInterface instance.

Try in this way:

l_out = QgsProject.instance().layoutManager().layoutByName("layoutname")
iface.openLayoutDesigner(layout=l_out)
  • Thanks it works now. Because i want this inside plugin, I added self before openLayoutDesigner. self.iface.openLayoutDesigner(layout=l_out) – Wilho Aug 8 '18 at 8:56

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