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This article will explain in detail how to deal with the form in Django, the content of the article is of high quality, so the editor will share it with you for reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.

Django's form processing: the view gets the request, performs any actions needed, including reading data from the model, and then generates and returns the HTML page (from the template), and we pass a context that contains the data to display. To complicate matters, the server also needs to be able to process user-provided data and redisplay the page in the event of any errors.

The following shows a flowchart of how Django handles form requests, starting with requests for pages that contain forms (shown in green):

Based on the above figure, the main content of Django form processing is:

The default form is displayed when the user first requests it.

The form may contain blank fields (for example, if you are creating a new record), or you may pre-populate the initial value (for example, if you want to change the record, or if you have a useful default initial value). At this point the form is called unbound because it has nothing to do with the data entered by any user (although it may have an initial value).

Receives data from the submit request and binds it to the form.

Binding data to a form means that when we need to redisplay the form, the data entered by the user and any errors are available.

Clean up and verify the data.

Purging data performs cleanup on the input (for example, removing invalid characters that may be used to send malicious content to the server) and converting it to a consistent Python type. Verify that the check value is appropriate for the field (for example, not too short or too long in the correct date range, etc.)

If any data is invalid, redisplay the form, this time with the value populated by any user, and the error message for the problem field.

If all data is valid, perform the necessary actions (such as saving data, sending forms and emails, returning search results, uploading files, etc.)

When you are done, redirect the user to another page.

On how to deal with the form in Django to share here, I hope that the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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