Button buttons in a form
<button>submit</button> :put in the form form, there will be a submit event, will submit the form data, the
<input type="button" value="submit">: is a simple button without any default events.
Match the url and the view function first
from import url from import admin from app01 import views urlpatterns = [ url(r'^admin/', ), url(r'^login/', ), ]
view function
def login(request):
if == "POST":
return HttpResponse("OK!")
return render(request,"")
Display on front-end pages
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<form action="/login/" method="post">
{# csrf_token in the front-end will render an input tag, is a set of key-value pairs, the key is csrfmiddlewaretoken, the value is a random string, will be submitted along with the following input tag, only this form of sending a request for post can be received, #}
{% csrf_token %}
<p>user ID：<input type="text" name="user"></p>
<p>cryptographic：<input type="password" name="pwd"></p>
<input type="submit">
</form>
</body>
</html>
The ---- above is the normal native form form using HTML.
Now use the form form provided by djangoIn the views, you have to create a class that inherits from django's forms class.
A form object is then instantiated in the view function and displayed on the front-end page using the fields of the class.
as_p is to display all the fields in the backend, not good customization, can be customized, use objects, keep up with the fields
Create a key class in views.
from import render,HttpResponse
# Create your views here.
# Using django's form class
from django import forms
class LoginForm():
user = ()
pwd = ()
def login(request):
if == "POST":
return HttpResponse("OK!")
form_obj = LoginForm() -------------------Instantiating Objects，
return render(request,"",{"form_obj":form_obj}) ---Transmit to front-end display
Receiving on the front end, rendering
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<form action="/login/" method="post">
{# csrf_token in the front-end will render an input tag, is a set of key-value pairs, the key is csrfmiddlewaretoken, the value is a random string, will be submitted along with the following input tag, only this form of sending a request for post can be received, #}
{% csrf_token %}
<p>user ID：{{ form_obj.user }}</p> ------------
<p>name of an ancient state classifier for length or distance (yard), happenings etc：{{ form_obj.pwd }}</p> -------------------
<input type="submit">
</form>
</body>
</html>
View the front-end elements that
--- The front-end can now enter data, but the back-end has to validate the submitted data.
Use the is_valid() method to get all the submitted data, cleaned_data, and if there are errors, use errors.
# Using django's form class
from django import forms
class LoginForm():
user = (max_length=9,min_length=5,error_messages={"required":"Required"})
pwd = ()
def login(request):
if == "POST":
Request validation for #post
formobj = LoginForm()# Get all the submissions
if formobj.is_valid():#All meet the field requirements.
# Take out all the data that meets the field requirements with cleaned_data
print(formobj.cleaned_data)# Get the data in dictionary format
else:
print()# If you are submitting incorrect data, use errors
return HttpResponse("OK!")
form_obj = LoginForm()
return render(request,"",{"form_obj":form_obj})
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