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Django4.0 + web + MySQL 5.7 realize simple login operation

2022-07-25 08:47:00 【Ding Jiaxiong】

Django

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- Django
- - Django + Web + MySQL5.7 Realize simple login operation
  - - 1.1 Django + Web + MySQL5.7

Django + Web + MySQL5.7 Realize simple login operation

1.1 Django + Web + MySQL5.7

1.1.1 Create project

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1.1.2 Create login application （Django Often called App）

python manage.py startapp login

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1.1.3 register App

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1.1.4 Configuration database

Be careful ：Django Cannot create database , You need to manually create it in advance

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DATABASES = {
    
    'default': {
    
    'ENGINE': 'django.db.backends.mysql',
    'NAME':'login',
    'USER': 'root',
    'PASSWORD': '200039',
    'HOST': '127.0.0.1',
    'PORT': 3306,
    }
}

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1.1.5 Create views and configurations urls

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stay templates New under the directory login.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1> The user login </h1>
    <form method="post" action="/login/">
        {% csrf_token %}
        <input type="text" name="user" placeholder=" user name ">
        <input type="password" name="pwd" placeholder=" password ">

        <button type="submit" value=" Submit "> Submit </button>
        {
   { error_msg }}
    </form>
</body>
</html>

1.1.6 Start the service access test

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Or execute the command on the command line

python manage.py runserver

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1.1.7 Creating models （ Entity class ）

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To execute a command on the command line

python manage.py makemigrations
python manage.py migrate

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view the database

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Manually insert a piece of data （ORM It's fine too , But not the focus of this example , ok , This example has no focus ）

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1.1.8 Write processing logic views.py

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def login(request):
    if request.method == "GET":
        return render(request,"login.html")
    username = request.POST.get("user")
    password = request.POST.get("pwd")

    user = User.objects.get(id = 1)
    user_name = user.username
    pass_word = user.password

    if username == user_name and password == pass_word:
        return HttpResponse(" Login successful ")
    return render(request,"login.html",{
    "error_msg":" Login failed "})