python - 我如何遍历对象的字段？

Question

我有一个这样的模型，我怎样才能遍历它而不必输入 company.id、company.name 等？

class Company(models.Model):
    name = models.CharField(max_length=1000)
    website = models.CharField(max_length=1000)
    email = models.CharField(max_length=200)
    phone_number = models.CharField(max_length=100)
    city = models.CharField(max_length=1000)
    zip = models.IntegerField()
    state = models.CharField(max_length=1000)
    address = models.CharField(max_length=1000)
    address2 = models.CharField(max_length=1000)

Answer 1

你可以像这样遍历所有字段名

for name in Company._meta.get_all_field_names():
    print name

如果您有类别实例，这也适用:

c = Company(name="foo",website="bar",email="baz@qux.com",....,)
c.save()
for field in c._meta.get_all_field_names():
    print getattr(c, field, None)

Django 1.8 更新

Django 1.8 现在有一个 official model Meta api您可以轻松获取所有字段:

from django.contrib.auth.models import User
for field in User._meta.get_fields():
    print field