How to implement simple login with Django
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Create a django project
Command line statement to create a project: django-admin startproject newsManage
Putting the templates file in the template will be more concise, so I'll create the template first.
Command line statement: django-admin startapp newsModel
Create the model and add the model name to the INSTALLED_APPS under the setting file, otherwise you will mistakenly report that you can't find it.
Create a templates directory to store html,js,css and other files. Under the setting file, TEMPLATES configures the file path of templates' DIRS': [os.path.join (BASE_DIR, 'templates')]
In the end, this is the general directory structure.
Use the url.py of the model
When you create a project, you will bring a urls.py file, which is used to configure the path. It will look messy if it is written in a urls. Putting it in the template will solve this problem perfectly.
Path: newsManage/newsManage/urls.py
Urlpatterns = [path ('admin/', admin.site.urls), path ('', include ('newsModel.urls'))]
Create the urls.py file path under the newsModel template: newsManage/newsModel/urls.py
From django.urls import pathfrom. Import viewsurlpatterns = [path ('', views.login, name='login')]
Path: newsManage/newsModel/views.py
Def login (request): return render (request, 'login.html')
Create a login.html file under templates, and then write a login page (it smells good with a template)
Run the startup server python manage.py runserver
Load static files
Static is to put static files like css,js loading static files also need to be configured, the last line of setting plus
STATICFILES_DIRS = [os.path.join (BASE_DIR, "static")]
If you quote it in html, you need to add {% load static%} before it.
And then you can quote it.
Page jump
Path ('/ register', views.register, name='register')
Like the registered url above, you can jump through the path or name.
Sign up
Click this link to jump to the registration page.
Create a database model
Configure pymysql in newsManage/newsManage/init.py. If there is no download, you need to download pymysql.
Import pymysqlpymysql.install_as_MySQLdb ()
Path: newsManage/newsModel/models.py (class name is table name)
Class user (models.Model): username = models.CharField (max_length=30) password = models.CharField (max_length=30) email = models.EmailField (unique=True, blank=False)
Run the command line to generate the table structure
Python manage.py migratepython manage.py makemigrationspython manage.py migrate newsModel
The database table name is the model name _ class name (newsModel_user)
The admin/ path can manipulate the database directly on the browser.
Submit
Form submission
The background determines whether the login is successful or not
Def toLogin (request): if request.method = 'POST': username = request.POST.get ("username") password = request.POST.get ("password") users = user.objects.all () for u in users: if u.username = = username and u.password = = password: return redirect ("home") context = {"msg": "wrong username or password!" } return render (request, "login.html", context) ajax submission
Data = eval ("(" + data + ")"); it's very important to remember to change it, otherwise you can't get it, but it seems that others don't have to turn it. $.ajax ({type: 'POST', url: "{% url' toLoginByAjax'%}", data: {'username': $("# username") .val (),' password': $("# password") .val ()}, dataType: 'text', success: function (data) {data = eval ("(" + data + ")") If (data.code = = 0) {_ window.location.href = "{% url 'home'%}"} else {$(".msg") .html (data.msg); setTimeout (function () {/ / timer $(".msg") .css ("display", "none") / / set the display property of the picture to none}, 3000) / / set 3000 milliseconds, that is, 3 seconds}} Error: function () {console.log ("somewhere is wrong")}) def toLoginByAjax (request): username = request.POST.get ("username") password = request.POST.get ("password") users = user.objects.all () for u in users: if u.username = = username and u.password = password: message = {"code": 0 "msg": "login succeeded!"} return JsonResponse (message) message = {"code": 400, "msg": "login failed Wrong username or password! "} return JsonResponse (message)
You can successfully log in to the home page (home.html)!
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