utils.py 文件源码

def populate_model(model, instances, create=True):
    model_fields = filter((lambda x: isinstance(x, models.Field)),
                          model._meta.get_fields())
    kwargs = {}
    # Outstanding instances in case of Many-to-Many relations.
    outstanding = {}
    for model_field in model_fields:
        if isinstance(model_field, models.AutoField):
            continue
        field_value, isoutstanding = generate_field_value(
            model_field, instances)
        if isoutstanding:
            outstanding[model_field.name] = field_value
        else:
            kwargs[model_field.name] = field_value
    if not create:
        return kwargs
    return create_instance(model, kwargs, outstanding)