“Django入库”的版本间的差异
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[https://blog.csdn.net/qq_19268039/article/details/83717966?utm_medium=distribute.pc_relevant.none-task-blog-baidujs_baidulandingword-5&spm=1001.2101.3001.4242 Django学习14-数据库相关1] | [https://blog.csdn.net/qq_19268039/article/details/83717966?utm_medium=distribute.pc_relevant.none-task-blog-baidujs_baidulandingword-5&spm=1001.2101.3001.4242 Django学习14-数据库相关1] | ||
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+ | [https://www.cnblogs.com/legion/p/7060885.html 一个Django简易项目的操作关键 ] | ||
[[category:django]] | [[category:django]] |
2021年7月3日 (六) 06:13的版本
django数据入库
1、声明类
1、声明类: e = Employee() e.name = '入库数据' e.save()即可存入
2、直接类中使用:
ee = Employee(name='aa') ee.save()
3、自带返回值:
Employee.objects.create(name='字段值') eg: Django是在views.py文件中,通过导入models.py文件来创建数据的: from django.shortcuts import render # Create your views here. from blog import models #导入blog模块 from django.shortcuts import HttpResponse def db_handle(request): models.UserInfo.objects.create(username='andy',password='123456',age=33) return HttpResponse('OK') 上面就是创建表数据,也可以通过字典的格式来创建表数据: def db_handle(request): # models.UserInfo.objects.create(username='andy',password='123456',age=33) dic = {"username":"bruce","password":"123456","age":23} models.UserInfo.objects.create(**dic) return HttpResponse('OK')
数据的查询
result = Employee.objects.all() 返回数据对象 直接在页面中输出: from blog.models import Employee from django.shortcuts import render_to_response def index(req): a= Employee.objects.all() return render_to_response('index.html',{'items':a}) 页面视图: {% for i in items%} <div>{{i}}</div> {% endfor %}
修改表数据
复制代码 from django.shortcuts import render # Create your views here. from blog import models from django.shortcuts import HttpResponse def db_handle(request): models.UserInfo.objects.filter(id=1).update(age=18) #找到id=1的数据,将age改为18 return HttpResponse('OK') 复制代码
删除表数据
删除表数据: views.py文件如下: from django.shortcuts import render # Create your views here. from blog import models from django.shortcuts import HttpResponse def db_handle(request): # models.UserInfo.objects.create(username='andy',password='123456',age=33) # dic = {"username":"bruce","password":"123456","age":23} # models.UserInfo.objects.create(**dic) models.UserInfo.objects.filter(id=2).delete() return HttpResponse('OK') 操作方法同上,在浏览器中执行一遍,数据中的id=2的数据即被删除: