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To understand how the generic class-based form editing views can vastly simplify creating forms for working with a single model.
An HTML Form is a group of one or more fields/widgets on a web page, which can be used to collect information from users for submission to a server.
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A process flowchart of how Django handles form requests is shown below, starting with a request for a page containing a form (shown in green).
Based on the diagram above, the main things that Django's form handling does are: class, which simplifies both generation of form HTML and data cleaning/validation.
What makes things more complicated is that the server also needs to be able to process data provided by the user, and redisplay the page if there are any errors.Forms are a flexible mechanism for collecting user input because there are suitable widgets for entering many different types of data, including text boxes, checkboxes, radio buttons, date pickers, etc.Forms are also a relatively secure way of sharing data with the server, as they allow us to send data in requests with cross-site request forgery protection.As part of this demonstration we'll extend the Local Library website so that librarians can renew books, and create, update, and delete authors using our own forms (rather than using the admin application).To understand how to write forms to get information from users and update the database.
As you can imagine, creating the HTML, validating the returned data, re-displaying the entered data with error reports if needed, and performing the desired operation on valid data can all take quite a lot of effort to "get right".