compat.py 文件源码

def get_names_and_managers(options):
    if django.VERSION >= (1, 10):
        # Django 1.10 onwards provides a `.managers` property on the Options.
        return [
            (manager.name, manager)
            for manager
            in options.managers
        ]
    # For Django 1.8 and 1.9, use the three-tuple information provided
    # by .concrete_managers and .abstract_managers
    return [
        (manager_info[1], manager_info[2])
        for manager_info
        in (options.concrete_managers + options.abstract_managers)
    ]


# field.rel is deprecated from 1.9 onwards