What is the difference between Django's TemplateView class, Listview class, and DetailView class?

In Django, TemplateView, ListViewand DetailVieware three different view classes used to handle different types of web application needs.

1. TemplateView (template view) :
   TemplateViewIt is a simple view class used to display the specified template file. It is usually used for the display of static content, such as about pages, contact pages, etc. TemplateViewThere is no need to interact with the database, so there is no built-in data query function.

   main feature:

   • Displays the specified template file.
   • get_context_data()Additional context data can be passed to the template by overriding the method.
   • There is no need to interact with the database, so there is no built-in data query function.
     For detailed explanations and examples of TemplateView (template view), see the link:
     https://blog.csdn.net/wenhao_ir/article/details/131342937

2. ListView (list view) :
   ListViewis a view class used to display a list containing multiple objects. It typically interacts with the database model, retrieving data from the database and passing it to the template for rendering. ListViewYou can perform query operations and pass the query results to the template for display.

   main feature:

   • Query and get multiple objects of the specified model (database table).
   • Pass the query result to the specified template for rendering.
   • The query logic can get_queryset()be customized by overriding the method.
   • get_context_data()Additional context data can be passed to the template by overriding the method.

3. DetailView (detail view) :
   DetailViewis a view class used to display detailed information of a specific object. It usually interacts with the database model by receiving a unique identifier (such as a primary key) to query and fetch a specific object, and pass it to the template for rendering.

   main feature:

   • Query and get specific objects in the specified model (database table).
   • Pass the query result to the specified template for rendering.
   • The query logic can get_queryset()be customized by overriding the method.
   • get_context_data()Additional context data can be passed to the template by overriding the method.

To sum up, TemplateViewa page used to display static content ListViewis used to display a list containing multiple objects, while DetailViewit is used to display detailed information of a specific object. These view classes provide different functions and uses, and the appropriate view class can be selected according to specific application requirements.