Django 面试题与答案

问题 31. How can you set up the database in Django?

You can edit mysite/setting.py, a module representing Django settings. By default, Django uses SQLite, which is easy to use and does not require any type of installation.

If your database choice is different, you have to do the following keys in the DATABASE ‘default’ item for matching your database connection settings:

• Engines: You can make the changes to the database using ‘django.db.backends.sqlite3’, ‘django.db.backeneds.mysql’, ‘django.db.backends.postgresql_psycopg2’, ‘django.db.backends.oracle’, and so on.
• Name: If you use SQLite as your database, the database file will be on your computer. The name should be a full absolute path, including the file name of that file.

But, if you do not choose SQLite, you need to add the settings such as Password, Host, User, etc.

问题 32. How can you set up static files in Django?

For setting up the static files in Django, you need to consider the below steps:

• Firstly, set the STATIC_ROOT in the settings.py file
• Run the manage.py collectsatic file
• Finally, set up a Static Files entry on the PythonAnywhere web tab

问题 33. What is the session framework in Django?

Django comes with the session framework helping to store and retrieve the arbitrary data on a per-site-visitor basis. It saves all data on the server-side and abstracts the receiving and sending of cookies. You can implement the session via middleware.

问题 34. How many types of inheritance styles are in Django?

Django has three inheritance styles, as mentioned below.

• Abstract base classes: You can use this style when you want a parent’s class to only store the information you don’t want to use for each child model
• Multi-table Inheritance: You can use this style If you are subclassing an existing model and need each model to have its database table.
• Proxy models: You can use this model if you only want to change the Python level behavior of the model without the need to change the model’s fields

问题 35. What are the applications of middleware in Django?

The following are some applications of middleware in Django: