Question

几周前我使用Django 我开始使用django应用程序并在model.py

中编写这些行

    from django.db import models
class Publisher(models.Model):
    name = models.CharField(max_length=30)
    address = models.CharField(max_lenght=50)
    city = models.CharField(max_length=60)
    state_province = models.CharField(max_length=30)
    country = models.model.CharField(max_length=50)
    website = models.URLField()

class Author(models.Model):
    first_name = models.CharFiled(max_length=30)
    last_name = models.CharField(max_length=40)
    email = models.EmailField()

class Book(models.Model):
    title = models.CharField(max_length=100)
    authors = models.ManyToManyField(Author)
    publisher = models.ForeignKey(Publisher)
    publication_date = models.DateField()

当我尝试验证或sqlall

时

python manage.py validate
or 
python manage.py sqlall appname

它会打印此错误消息

Traceback (most recent call last):
      File "manage.py", line 11, in <module>
        execute_manager(settings)
      File "C:\Python27\lib\site-packages\django\core\management\__init__.py", line
    438, in execute_manager
        utility.execute()
      File "C:\Python27\lib\site-packages\django\core\management\__init__.py", line
    379, in execute
        self.fetch_command(subcommand).run_from_argv(self.argv)
      File "C:\Python27\lib\site-packages\django\core\management\base.py", line 191
     in run_from_argv
        self.execute(*args, **options.__dict__)
      File "C:\Python27\lib\site-packages\django\core\management\base.py", line 218
     in execute
        output = self.handle(*args, **options)
      File "C:\Python27\lib\site-packages\django\core\management\base.py", line 347
     in handle
        return self.handle_noargs(**options)
      File "C:\Python27\lib\site-packages\django\core\management\commands\validate.
    y", line 9, in handle_noargs
        self.validate(display_num_errors=True)
      File "C:\Python27\lib\site-packages\django\core\management\base.py", line 245
     in validate
        num_errors = get_validation_errors(s, app)
      File "C:\Python27\lib\site-packages\django\core\management\validation.py", li
    e 28, in get_validation_errors
        for (app_name, error) in get_app_errors().items():
      File "C:\Python27\lib\site-packages\django\db\models\loading.py", line 146, i
     get_app_errors
        self._populate()
      File "C:\Python27\lib\site-packages\django\db\models\loading.py", line 61, in
    _populate
        self.load_app(app_name, True)
      File "C:\Python27\lib\site-packages\django\db\models\loading.py", line 78, in
    load_app
        models = import_module('.models', app_name)
      File "C:\Python27\lib\site-packages\django\utils\importlib.py", line 35, in i
    port_module
        __import__(name)
      File "C:\Documents and Settings\root\mysite\..\mysite\books\models.py", line
    , in <module>
        class Publisher(models.Model):
      File "C:\Documents and Settings\root\mysite\..\mysite\books\models.py", line
    , in Publisher
        address = models.CharField(max_lenght=50)
      File "C:\Python27\lib\site-packages\django\db\models\fields\__init__.py", lin
     542, in __init__
        super(CharField, self).__init__(*args, **kwargs)
    TypeError: __init__() got an unexpected keyword argument 'max_lenght'

请帮我解决此错误

Answer 1

不想粗鲁，但你是否懒得阅读错误信息？

unexpected keyword argument 'max_lenght'

（你拼错了max_length）

编辑：

大量的错误消息可能令人生畏，但第一行有一个很好的提示：

Traceback (most recent call last):

从底部开始查看，确实可以找到您的错误。

另一个提示（虽然这次没有帮助）是扫描代码中是否存在您编写的文件中的错误（而不是django库代码），这有时位于列表的中间。

Answer 2

异常消息不能更清楚：

TypeError: __init__() got an unexpected keyword argument 'max_lenght'

这是违规行，看起来像是一个错字。

address = models.CharField(max_lenght=50)
                                   ^

Django模型：意外的关键字错误消息

2 个答案: