django与mysql实现简单的增删查改
模型定义
from django.db import models
class Grades(models.Model):
g_name = models.CharField(max_length=20)
create_date = models.DateTimeField()
girl_num = models.IntegerField()
boy_num = models.IntegerField()
isDelete = models.BooleanField(default=False)
def __str__(self):
return self.g_name
class Meta:
db_table = 'grades'
class Students(models.Model):
s_name = models.CharField(max_length=20)
s_gender = models.BooleanField(default=True)
s_age = models.IntegerField()
conetend = models.CharField(max_length=20)
isDlete = models.BooleanField(default=False)
# 关联外键
s_grade = models.ForeignKey("Grades")
def __str__(self):
return self.s_name
class Meta:
db_table = 'students'
url
from django.conf.urls import url
from user import views
urlpatterns = [
url(r'^show_info/',views.show_info,name='show_info'),
url(r'^add_stu/',views.add_stu,name='add_stu'),
url(r'^del_stu/(\d+)/',views.del_stu,name='del_stu'),
url(r'^mod_stu/(\d+)/',views.mod_stu,name='mod_stu'),
url(r'^sel_stu/',views.sel_stu,name='sel_stu'),
]
视图函数定义
from django.shortcuts import render
from django.http import HttpResponseRedirect
from django.urls import reverse
from user.models import Students,Grades
def show_info(request):
if request.method == 'GET':
stus = Students.objects.all()
return render(request,'info.html',{'stus':stus})
def add_stu(request):
if request.method == 'GET':
grades = Grades.objects.all()
return render(request,'add.html',{'grades':grades})
if request.method == 'POST':
name = request.POST.get('name')
age = request.POST.get('age')
gender = request.POST.get('sex')
content = request.POST.get('msg')
grade = request.POST.getlist('check')[0]
sgrade = Grades.objects.get(g_name=grade)
Students.objects.create(s_name=name,s_age=age,s_gender=gender,contend=content,s_grade=sgrade)
return HttpResponseRedirect(reverse('user:show_info'))
def del_stu(request,id):
if request.method == 'GET':
Students.objects.get(pk=id).delete()
return HttpResponseRedirect(reverse('user:show_info'))
def mod_stu(request,id):
if request.method == 'GET':
stu = Students.objects.get(pk=id)
grades = Grades.objects.all()
return render(request,'mod.html',{'stu':stu,'grades':grades})
if request.method == 'POST':
name = request.POST.get('name')
age = request.POST.get('age')
gender = request.POST.get('gender')
grade = request.POST.getlist('check')[0]
u_grade = Grades.objects.get(g_name=grade)
Students.objects.filter(pk=id).update(s_name=name,s_age=age,s_gender=gender,s_grade=u_grade)
return HttpResponseRedirect(reverse('user:show_info'))
def sel_stu(request):
if request.method == 'GET':
return render(request,'sel.html')
if request.method == 'POST':
name = request.POST.get('name')
try:
stu = Students.objects.get(s_name=name)
return render(request, 'sel.html', {'stu': stu})
except:
return render(request,'sel.html',{'error':'该学生不存在'})
页面html定义
添加页
{% extends 'base.html' %}
{% block content %}
<form action="" method="post">
{% csrf_token %}
姓名:<input type="text" name="name">
年龄:<input type="text" name="age">
性别:<input type="text" name="sex">
描述:<input type="text" name="msg">
{% for grade in grades %}
<input type="radio" name="check" value="{{grade.g_name}}">{{grade.g_name}}
{% endfor %}
<input type="submit" value="提交">
</form>
{% endblock %}
修改页
{% extends 'base.html' %}
{% block content %}
<form action="" method="post">
{% csrf_token %}
姓名: <input type="text" name="name" value="{{stu.s_name}}">
年龄: <input type="text" name="age" value="{{stu.s_age}}">
性别: <input type="text" name="gender" value="{{stu.s_gender}}">
{% for grade in grades %}
<input type='radio' name="check" value="{{grade.g_name}}">{{grade.g_name}}
{% endfor %}
<input type="submit" value="修改">
</form>
{% endblock %}
查询页
{% extends 'base.html' %}
{% block content %}
<form action="" method="post">
{% csrf_token %}
请输入学生姓名:<input type="text" name="name">
<input type="submit" value="提交">
<table border="1">
<br>
{% if stu %}
<thead>
<th align="center" style="color:red">序号</th>
<th align="center" style="color:red">姓名</th>
<th align="center" style="color:red">年龄</th>
<th align="center" style="color:red">性别</th>
<th align="center" style="color:red">简介</th>
<th align="center" style="color:red">班级</th>
</thead>
<tbody>
<tr>
<td align="center">{{stu.id}}</td>
<td align="center">{{stu.s_name}}</td>
<td align="center">{{stu.s_age}}</td>
<td align="center">{{stu.s_gender}}</td>
<td align="center">{{stu.contend}}</td>
<td align="center">{{stu.s_grade.g_name}}</td>
</tr>
</tbody>
</table>
{% endif %}
</form>
<h1 style="color:red">{{error}}</h1>
{% endblock %}
信息页
{% extends 'base.html' %}
{% block content %}
<table border="1">
<thead>
<th align="center" style="color:red">序号</th>
<th align="center" style="color:red">姓名</th>
<th align="center" style="color:red">年龄</th>
<th align="center" style="color:red">性别</th>
<th align="center" style="color:red">班级</th>
<th align="center" style="color:red">班级成立时间</th>
<th align="center" style="color:red">删除学生</th>
<th align="center" style="color:red">修改学生</th>
</thead>
<tbody>
{% for stu in stus %}
<tr>
<td align="center">{{forloop.counter}}</td>
<td align="center">{{stu.s_name}}</td>
<td align="center">{{stu.s_age}}</td>
<td align="center">{{stu.s_gender}}</td>
<td align="center">{{stu.s_grade.g_name}}</td>
<td align="center">{{stu.s_grade.create_date}}</td>
<td align="center"><a href="/user/del_stu/{{stu.id}}/">删除</a></td>
<td align="center"><a href="/user/mod_stu/{{stu.id}}/">修改</a></td>
</tr>
{% endfor %}
</tbody>
</table>
<a href="/user/add_stu/{{stu.id}}/">增加学生</a>
<a href="/user/sel_stu/{{stu.id}}/">查询学生</a>
{% endblock %}
django与mysql实现简单的增删查改的更多相关文章
- nodejs连接mysql并进行简单的增删查改
最近在入门nodejs,正好学习到了如何使用nodejs进行数据库的连接,觉得比较重要,便写一下随笔,简单地记录一下 使用在安装好node之后,我们可以使用npm命令,在项目的根目录,安装nodejs ...
- Java连接MySQL数据库及简单的增删查改操作
主要摘自 https://www.cnblogs.com/town123/p/8336244.html https://www.runoob.com/java/java-mysql-connect.h ...
- mybatis实现简单的增删查改
接触一个新技术,首先去了解它的一些基本概念,这项技术用在什么方面的.这样学习起来,方向性也会更强一些.我对于mybatis的理解是,它是一个封装了JDBC的java框架.所能实现的功能是对数据库进行增 ...
- EF简单的增删查改
Add /// <summary> /// /// </summary> public void Add() { TestDBEntities2 testdb = new Te ...
- Django实现数据库中表格的增删查改
1.urls.py """Django_demo1 URL Configuration The `urlpatterns` list routes URLs to vie ...
- 一般处理程序+htm C#l简单的增删查改
首先引用两个文件一个dll: 数据库表已创建 首先编写数据读取部分 /// <summary> /// 查询 /// </summary> /// <param name ...
- RavenDb学习(二)简单的增删查改
在上一节当中已经介绍了RavenDb的文档设计模式,这一节我们要具体讲一讲如何使用api去访问RavenDb .连接RavenDb var documentStore = new DocumentSt ...
- Hibernate 的事物简单的增删查改
Hibernate 是一个优秀的ORM框架体现在: 1. 面向对象设计的软件内部运行过程可以理解成就是在不断创建各种新对象.建立对象之间的关系,调用对象的方法来改变各个对象的状态和对象消亡的过程,不管 ...
- asp.net MVC最简单的增删查改!(详)
折腾了两天搞出来,但原理性的东西还不是很懂,废话不多说上图上代码 然后右键models,新建一个数据模型 注意我添加命名为lianxi 添加后如上 接下来在controllers添加控制器还有在Vie ...
随机推荐
- Codeforces Round #FF (Div. 2) D. DZY Loves Modification 贪心+优先队列
链接:http://codeforces.com/problemset/problem/447/D 题意:一个n*m的矩阵.能够进行k次操作,每次操作室对某一行或某一列的的数都减p,获得的得分是这一行 ...
- 问题2-:Syntax error on tokens, delete these tokens
出现原因:拷贝下来的代码缺少{左大括号 然后运行时run as 没有选到java application 是因为没有main方法 加个public static void main(String() ...
- Qt由pcm数据生成wav文件
void AudioGrabber::saveWave(const QString &fileName, const QByteArray &raw, const QAudioForm ...
- notifyDataSetChanged()刷新ListView(使用JSONArray绑定的Adapter)
1.fragment代码: package com.ts.fragment; import java.util.ArrayList; import java.util.HashMap; import ...
- 时间格式字符串转化为date和时间戳
NSString *dateStr=@"2012-05-17 11:23:23"; NSLog(@"dateStr=%@",dateStr); NSDateFo ...
- POJ2576 Tug of War 二维背包
题目大意 一群人拔河,给出每个人的重量,要求两队人数之差不超过1人,且每队总重量之差最小. 思路 选出严格总人数一半(或+1)的人为一队,在该队重量不超过所有人总重量一半的情况下,使其重量最大. 人数 ...
- Linux内核OOM机制的详细分析【转】
本文转载自:http://blog.csdn.net/liukuan73/article/details/43238623 Linux内核根据应用程序的要求分配内存,通常来说应用程序分配了内存但是并没 ...
- poj--2239--Selecting Courses(最大匹配)
Selecting Courses Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 9782 Accepted: 4400 ...
- hdoj-- Walking Ant
Walking Ant Time Limit : 2000/1000ms (Java/Other) Memory Limit : 65536/32768K (Java/Other) Total S ...
- Dungeon Master hdoj
Dungeon Master Time Limit : 2000/1000ms (Java/Other) Memory Limit : 131072/65536K (Java/Other) Tot ...