Innovation training (VII) FBV view & CBV view

FBV View

Basic function ： Set response function 、HTTP Request object

• Return the response content
• Abnormal response
• Get request information get post
• The crawler

def index ( request) :
    # value = {'title': 'this is a test'}
    # print(value)
    # return render(request, 'index.html', context=value)
    # html = '<h1>hello</h1>'
    # return HttpResponse(html, status=200)
    if request.method == 'GET':
        #  Class method 
        print(request.is_secure())
        print(request.is_ajax())
        print(request.get_host())
        print(request.get_full_path())
        print(request.get_raw_uri())
        #  Use of attributes 
        print(request.COOKIES)
        print(request.content_type)
        print(request.content_params)
        print(request.scheme)
        #  obtain GET Requested request parameters 
        print(request.GET.get('user', ''))
        return render(request, 'index.html')
    elif request.method == 'POST':
        #  obtain POST Requested request parameters 
        print(request.POST.get('user', ''))
        return render(request, 'index.html')

CBV View

1. View class ListView:
   You need to use model objects , Defining models , Establish the mapping relationship with the database
   command ：

python3 manage.py makemigrations
python3 manage.py migrate

2. Data operation view
   FormView
   CreateView
   UpdateView
   DeleteView
   Data display, addition, deletion and modification