Using the same file name as input layer in MMQGIS KML Export

Question

I have a bulk of data, which I would like to export as the KML file by using the MMQGIS plugin.

Everything is fine with the plugin, but I am wondering about auto-change the output file name, which could be based on the input layer name. Is it possible at all?

Answer 1

You can achieve this by changing the source code of the plugin. Otherwise, the plugin uses the name temp for each output file.

Open mmqgis_dialogs.py file in MMQGIS Plugin folder (Settings > User Profiles > Open Active Profile Folder, navigate to python/plugins/mmqgis)

Change mmqgis_temp_file_name method (line ~260) in mmqgis_dialog class as follows:

def mmqgis_temp_file_name(self, suffix, name=None):
    project = QgsProject.instance()

    home_path = project.homePath()
    if not home_path:
        home_path = os.getcwd()

    for x in range(1, 10):
        if name:
            name = home_path + "/" + name + str(x) + suffix
        else:
            name = home_path + "/temp" + str(x) + suffix
        if not os.path.isfile(name):
            return name

    return home_path + "/temp" + suffix

Find and change the following line (between approx. line 2170-2175):

self.output_file_name.setFilePath(self.mmqgis_temp_file_name(".kml"))

to

self.output_file_name.setFilePath(self.mmqgis_temp_file_name(".kml", self.input_layer_name.currentText()))

And add the following line (same as above) to changelayers method (approx. line 2175-2180):

self.output_file_name.setFilePath(self.mmqgis_temp_file_name(".kml", self.input_layer_name.currentText()))

Answer 2

Under QGIS, once you installed MMQGIS plugin, you can open a Python console editor and adapt the code below :

from mmqgis.mmqgis_dialogs import mmqgis_kml_export_dialog

# you can adapt the code by iterate over all the project layer
# for e.g. to retrieve the active layer name
# layer_name = iface.activeLayer().name()
layer_name = "16h37m20"

# create a mmqgis kml export dialog class instance
kml_export = mmqgis_kml_export_dialog(iface)
# search layer name in the dialog combobox
layer_index = kml_export.input_layer_name.findText(layer_name)
# if layer name is not found in the dialog combobox
if layer_index == -1:
    raise ValueError("Layer not found")
else:
    kml_export.input_layer_name.setCurrentIndex(layer_index)
    # set the output kml file path
    kml_export.output_file_name.setFilePath(fr"C:/folder1/folder2/{layer_name}.kml")
    kml_export.run()