introduce a default render implementation on the base widget, which add_media and then call the newly introduced method _render(form, field, formrenderer), abstract of the base widget class. This allow a litle code factorisation and avoid to forget the call to add_media in subclasses.

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from os.path import join

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from cubicweb.toolsutils import create_dir

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option_renamed('pyro-application-id', 'pyro-instance-id')

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create_dir(join(config.appdatahome, 'backup'))