Multiple values in editorform

[David0099]

Is your feature request related to a problem? Please describe. When editing a layer it would be good if there was a possibility to choose multiple values from a dropdown list or be able to tick multiple checkboxes and store in the same attribute.

Describe the solution you'd like For example if the attribute is country and the options are: • Sweden • Norway • Denmark • Finland Then being able to select one or many values.

Describe alternatives you've considered In the dialogue-plugin there is an excellent solution to the problem, with checkboxes. Here you can also add a text value if no option in the value list matches the desired value “for example Iceland”. This functionality in the core would be superb.

Additional context