Question

我是Django的初学者。我需要使用关系字段将Model实例转换为与Model.objects.values类似的字典。所以我写了一个小函数来做到这一点：

def _get_proper(instance, field):
    if field.__contains__("__"):
        inst_name = field.split("__")[0]
        new_inst = getattr(instance, inst_name)
        next_field = "__".join(field.split("__")[1:])
        value = _get_proper(new_inst, next_field)
    else:
        value = getattr(instance, field)

    return value

def instance_to_dict(instance, fields):
    return {key: _get_proper(instance, key) for key in fields}

所以，我可以这样使用它：

user_obj = User.objects.select_related(...).get(...)
print instance_to_dict(user_obj, ["name", "city__name", "city_id"])

您可以提出更好的解决方案吗？谢谢！附：抱歉我的英文。

Answer 1

This actually already exists in Django, but its not widely documented.

from django.forms import model_to_dict
my_obj = User.objects.first()
model_to_dict(my_obj,
    fields = [...], # fields to include
    exclude =  [...], # fields to exclude
)

django将模型实例转换为dict

1 个答案: