Forms: Update

Description

python
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def note_detail(request, note_id):
    note = Note.objects.get(pk=note_id)

    if request.method == 'POST':
        form = NoteForm(request.POST)
        if form.is_valid():
            title = form.cleaned_data['title']
            content = form.cleaned_data['content']
            note.title = title
            note.content = content
            note.save()
            return redirect('notes')
            
    return render(request, 'note_detail.html', {'note': note})

1. if request.method == 'POST':: This checks if the HTTP request method is POST, which is typically used for submitting form data;

2. form = NoteForm(request.POST): This creates an instance of the NoteForm form class, using the data submitted in the POST request (request.POST);

3. if form.is_valid():: This checks if the form data is valid according to the form's validation rules;

4. title = form.cleaned_data['title']: This retrieves the cleaned (validated and processed) value of the 'title' field from the form;

5. content = form.cleaned_data['content']: Similarly, this retrieves the cleaned value of the 'content' field from the form;

6. note.title = title and note.content = content: These lines update the 'title' and 'content' fields of the Note object with the cleaned data obtained from the form;

7. note.save(): This saves the changes made to the Note object in the database;

8. return redirect('notes'): If everything is successful, the user is redirected to the 'notes' page.