orm.py 文件源码

def model_fields(model, only=None, exclude=None, field_args=None, converter=None):
    """
    Generate a dictionary of fields for a given Django model.

    See `model_form` docstring for description of parameters.
    """
    converter = converter or ModelConverter()
    field_args = field_args or {}

    model_fields = ((f.attname, f) for f in model._meta.fields)
    if only:
        model_fields = (x for x in model_fields if x[0] in only)
    elif exclude:
        model_fields = (x for x in model_fields if x[0] not in exclude)

    field_dict = {}
    for name, model_field in model_fields:
        field = converter.convert(model, model_field, field_args.get(name))
        if field is not None:
            field_dict[name] = field

    return field_dict