一、URL添加
from django.contrib import admin
from django.urls import path,re_path
from app01 import views urlpatterns = [
path('admin/', admin.site.urls),
path('users/', views.users),
path('add_user/', views.add_user),
re_path('edit_user-(\d+)/',views.edit_user),
]
二、views.py操作
from django.shortcuts import render,redirect # Create your views here. from app01.formm import FormUser
from app01 import models
def users(request):
user_list=models.UserInfo.objects.all()
return render(request,'users.html',{'user_list':user_list}) def add_user(request):
if request.method=='GET':
obj=FormUser()
return render(request,'add_user.html',{'obj':obj})
else:
obj=FormUser(request.POST)
if obj.is_valid():
print(obj.cleaned_data) #1.加载到数据库中 如果Form类中的变量username,email和Models中字段不一样采用方法1
''' class FormUser(forms.Form):
user=fields.CharField(max_length=16,min_length=6,required=True)
emai=fields.EmailField(required=True,max_length=32)
'''
'''
class UserInfo(models.Model):
username=models.CharField(max_length=32)
email=models.EmailField(max_length=32)
向数据库中添加数据用如下方法： models.UserInfo.objects.create(
username=obj.cleaned_data['user'],
email=obj.cleaned_data['emai']) '''
#2.如果Form类中的变量username,email和Models中字段一样 都是username,email采用方法2
''' class FormUser(forms.Form):
username=fields.CharField(max_length=16,min_length=6,required=True)
email=fields.EmailField(required=True,max_length=32)
'''
'''
class UserInfo(models.Model):
username=models.CharField(max_length=32)
email=models.EmailField(max_length=32)
向数据库中添加数据用如下方法：
models.UserInfo.objects.create(**obj.cleaned_data)
此外要注意对应的html网页中相应的变量也需要同时进行更改，保持一致
'''
models.UserInfo.objects.create(**obj.cleaned_data)
return redirect('/users/')
else:
return render(request, 'add_user.html', {'obj': obj}) def edit_user(request,nid):
if request.method=='GET':
# nid=request.GET.get('nid')
data=models.UserInfo.objects.filter(id=nid).first()
obj=FormUser({'username':data.username,'email':data.email})
return render(request,'edit_user.html',{'obj':obj,'nid':nid})
else:
obj=FormUser(request.POST)
if obj.is_valid():
models.UserInfo.objects.filter(id=nid).update(**obj.cleaned_data)
return redirect('/users/')
else:
return render(request,'edit_user.html',{'obj':obj,'nid':nid})
三、MODLES创建类
#Author:lee
from django import forms
from django.forms import fields class FormUser(forms.Form):
username=fields.CharField(max_length=16,min_length=6,required=True)
email=fields.EmailField(required=True,max_length=32)
四、PYTHON-HTML（显示-添加-编辑）
4.1显示页面
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<a href="/add_user/">添加</a>
<ul>
{% for row in user_list %}
<li>{{row.id}}--{{ row.username }}-{{row.email}}<a href="/edit_user-{{ row.id }}/">编辑</a></li>
{% endfor %}
</ul>
</body>
</html>
页面效果显示：
4.2添加页面
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<form action="/add_user-{{ nid }}/" method="post" novalidate>
<p>{{obj.username }}{{ obj.errors.username.0}}</p>
<p>{{obj.email }}{{ obj.errors.email.0 }}</p>
<input type="submit" value="提交">
</form>
</body>
</html>
点击上图 “添加按钮”’ 页面效果显示：
4.3编辑页面
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<form action="/edit_user-{{ nid }}/" method="post">
<p>{{ obj.username }}{{ obj.errors.username.0 }}</p>
<p>{{ obj.email }}{{ obj.errors.email.0 }}</p>
<input type="submit" value="submit">
</form>
</body>
</html>
页面效果显示：
五、创建表
from django.db import models # Create your models here.
class UserInfo(models.Model):
username=models.CharField(max_length=32)
email=models.EmailField(max_length=32)