的迁移代码全部都是从你的模型文件导出的，它本质上只是个历史 记录，Django 可以通过滚动更新数据库来匹配你当前的模型。 在这个简单的投票应用中，我们将创建两个模型：问题 Question 和选项 Choice。Question 模 型包括问题描述和发布时间。Choice 模型有两个字段：选项描述和当前票数。每个 选项 属于一个 问题。 这些概念可以通过一个简单的 Python 类来表示。像下面那样编辑 class Question(models.Model): 6. question_text = models.CharField(max_length=200) 7. pub_date = models.DateTimeField('date published') 8. 9. class Choice(models.Model): 10. question = models models.ForeignKey(Question, on_delete=models.CASCADE) 11. choice_text = models.CharField(max_length=200) 12. votes = models.IntegerField(default=0) 代码非常直白。每个模型都被表示为 django.db.models.Model 类的子类。每个模型都有些类变

Canonical Limited 1.6. Review Exercise Question: What is meant by the term free software? Answer: Question: What is the Ubuntu promise? Answer: Question: Match the Ubuntu versions with the years 2007 4) 7.10 d) October 2004 Answer: Question: List 3 ways in which non-technical users can contribute towards the development of Ubuntu. Answer: Question: The default web browser on Ubuntu is _________________ _________________. Answer: Question: The default e-mail client on Ubuntu is __________________. Answer: Question: What are the advantages of Ubuntu 6 monthly releases? Answer: 20 Chapter 1.

POWERFUL QUESTION What else? POWERFUL QUESTION What is at risk? POWERFUL QUESTION What is important about that? POWERFUL QUESTION What might ‘help’ look like? Sources: Coaches Training Institute Coaches Training Institute, Deb Preuss, Agile Coaching InstitutePOWERFUL QUESTION POWERFUL QUESTION POWERFUL QUESTION POWERFUL QUESTION Sources: Coaches Training Institute, Deb Preuss, Agile Coaching Institute Which part is ?POWERFUL QUESTION POWERFUL QUESTION POWERFUL QUESTION POWERFUL QUESTION Sources: Coaches Training Institute, Deb Preuss, Agile Coaching Institute

to get help? Why hasn’t my message appeared on django-users? Nobody on django-users answered my question! What should I do? I think I’ve found a bug! What should I do? I think I’ve found a security problem contents. Search for information in the archives of the django-users mailing list, or post a question. Ask a question in the #django IRC channel, or search the IRC logs to see if it’s been asked before. Report two models: Question and Choice. A Question has a question and a publication date. A Choice has two fields: the text of the choice and a vote tally. Each Choice is associated with a Question. These concepts

• Search for information in the archives of the django-users mailing list, or post a question. • Ask a question in the #django IRC channel, or search the IRC logs to see if it’s been asked before. • two models: Question and Choice. A Question has a question and a publication date. A Choice has two fields: the text of the choice and a vote tally. Each Choice is associated with a Question. These concepts class Question(models.Model): question_text = models.CharField(max_length=200) pub_date = models.DateTimeField('date published') class Choice(models.Model): question = models.ForeignKey(Question) choice_text

to get help? Why hasn’t my message appeared on django-users? Nobody on django-users answered my question! What should I do? I think I’ve found a bug! What should I do? I think I’ve found a security problem contents. Search for information in the archives of the django-users mailing list, or post a question. Ask a question in the #django IRC channel. Report bugs with Django in our ticket tracker. How the documentation two models: Question and Choice. A Question has a question and a publication date. A Choice has two fields: the text of the choice and a vote tally. Each Choice is associated with a Question. These concepts

to get help? Why hasn’t my message appeared on django-users? Nobody on django-users answered my question! What should I do? I think I’ve found a bug! What should I do? I think I’ve found a security problem contents. Search for information in the archives of the django-users mailing list, or post a question. Ask a question in the #django IRC channel. Report bugs with Django in our ticket tracker. How the documentation two models: Question and Choice. A Question has a question and a publication date. A Choice has two fields: the text of the choice and a vote tally. Each Choice is associated with a Question. These concepts

to get help? Why hasn’t my message appeared on django-users? Nobody on django-users answered my question! What should I do? I think I’ve found a bug! What should I do? I think I’ve found a security problem contents. Search for information in the archives of the django-users mailing list, or post a question. Ask a question in the #django IRC channel, or search the IRC logs to see if it’s been asked before. Report two models: Question and Choice. A Question has a question and a publication date. A Choice has two fields: the text of the choice and a vote tally. Each Choice is associated with a Question. These concepts

• Search for information in the archives of the django-users mailing list, or post a question. • Ask a question in the #django IRC channel. • Report bugs with Django in our ticket tracker. 1.2 How two models: Question and Choice. A Question has a question and a publication date. A Choice has two fields: the text of the choice and a vote tally. Each Choice is associated with a Question. These concepts class Question(models.Model): question_text = models.CharField(max_length=200) pub_date = models.DateTimeField('date published') class Choice(models.Model): question = models.ForeignKey(Question, on_delete=models