jdango使用ModelForm表单提交和表单验证

settings.xml修改中文

LANGUAGE_CODE = 'zh-hans'

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'app01.apps.App01Config',#引入自己的app模块
]

#数据库
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'python_emp',
        'USER': 'root',
        'PASSWORD': '123456',
        'HOST': '127.0.0.1',
        'PORT': '3306',
    }
}

urls.xml

from django.urls import path
from app01 import views as app01views

urlpatterns = [
    

    path('users/list', app01views.users_list),
    path('users/toadd', app01views.to_users_add),
    path('users/save', app01views.users_save ),
    path('users/del/<int:id>', app01views.users_del ),
]

 models.xml

from django.db import models

# Create your models here.

''''部门'''
class Dep(models.Model):
    #id默认自动生成自增长
    dname=models.CharField(max_length=255,verbose_name='部门名称')

    def __str__(self):
        return self.dname

'''员工'''
class Users(models.Model):
    #id默认自动生成自增长
    realname=models.CharField(max_length=255,verbose_name='姓名')
    uname=models.CharField(max_length=255,verbose_name='用户名')
    upass=models.CharField(max_length=255,verbose_name='密码')
    age=models.IntegerField(verbose_name='年龄')
    money=models.DecimalField(verbose_name='余额',max_digits=10,decimal_places=2,default=0)
    cts=models.DateField(verbose_name='创建时间')
    # 部门外键自动加_id就是dep_id,
    # on_delete=models.CASCADE级联删除
    dep=models.ForeignKey(to='Dep' ,to_field='id',on_delete=models.CASCADE,verbose_name='部门' )
    #on_delete=models.SET_NULL的是删除外键置空
    # dep=models.ForeignKey(to='Dep' ,to_field='id',on_delete=models.SET_NULL,null=True,blank=True)
    #自动将dep对象封装了，获取.dep.dname


    sexitems=(
        (1,'男'),
        (2,'女')
    )
    sex=models.SmallIntegerField(verbose_name='性别',choices=sexitems)
    #获取sex男女字符串使用.get_sex_display()方法获取男女

#执行命令生成数据库表
python manage.py makemigrations
python manage.py migrate页面

views.xml

from django.shortcuts import render,redirect,HttpResponse
from app01.models import Dep,Users
from django import forms
# Create your views here.

def dep_list(request):
    list=Dep.objects.all()
    return render(request,"dep_list.html",{'list':list})

def to_dep_add(request):
    id=request.GET.get('id')
    if id:
        obj=Dep.objects.filter(id=id).first()
        return render(request,"dep_add.html" ,{'obj':obj})
    return render(request,"dep_add.html" )

def dep_save(request):
    dname=request.POST.get('dname')
    id=request.POST.get('id')
    print(id,'-'*100)
    if id:
        Dep.objects.filter(id=id).update(dname=dname)
    else:
        Dep.objects.create(dname=dname)
    return redirect('/dep/list')


def dep_del(request,id):
    Dep.objects.filter(id=id).delete()
    return redirect('/dep/list')



def users_list(request):
    list=Users.objects.all()
    return render(request,"users_list.html",{'list':list})


class UsersModelForm(forms.ModelForm):
    realname=forms.CharField(max_length=20,required=True,label='姓名')
    #render_value=True编辑回显密码
    upass=forms.CharField( required=True,label='密码',widget=forms.PasswordInput(render_value=True))
    class Meta:
        model=Users
        #显示全部字段
        # fields="__all__"
        # 排除不显示的字段
        # exclude=['upass']
        fields=[ 'uname','upass','realname','sex','age','dep','cts','money']
    def __init__(self,*args,**kwargs):
        super().__init__(*args,**kwargs)
        for name,field in self.fields.items():
            field.widget.attrs={"class":"form-control","required":"required" }




def to_users_add(request):
    id=request.GET.get('id')
    if id:
        obj=Users.objects.filter(id=id).first()
        form= UsersModelForm(instance=obj)
        return render(request,"users_add.html" ,{'form':form,'id':id})
    form= UsersModelForm()
    return render(request,"users_add.html" ,{'form':form})

def users_save(request ):
    id=request.POST.get('id')
    form=None
    if id:
        obj=Users.objects.filter(id=id).first()
        form= UsersModelForm(instance=obj,data=request.POST)
    else:
        form= UsersModelForm(data=request.POST)
    if form.is_valid():
        form.save()
        return redirect('/users/list')
    return render(request,"users_add.html" ,{'form':form})

def users_del(request,id):
    Users.objects.filter(id=id).delete()
    return redirect('/users/list')

表单add.html

{% extends 'layout.html' %}
{% block content %}
    <form class="form-horizontal" role="form" method="post"  action="/users/save"  novalidate>
        {% csrf_token %}
        <input name="id" value="{{id}}" type="hidden">
        {% for t in form %}
        <div class="form-group">
            <label  class="col-sm-2 control-label">{{t.label}}</label>
            <div class="col-sm-10">
                 {{t}}
                <p style="color: red">{{t.errors.0}}</p>
            </div>
        </div>
        {% endfor %}


        <div class="form-group">
            <div class="col-sm-offset-2 col-sm-10">
                <button type="submit" class="btn btn-default">提交</button>
            </div>
        </div>
    </form>

{% endblock %}

list.html

{% extends 'layout.html' %}
{% block content %}

   <div>
       <a href="/users/toadd" class="btn btn-success">添加</a>
   </div>
   <table class="table table-striped">
       <caption>用户管理</caption>
       <thead>
       <tr>
           <th>id</th>
           <th>姓名</th>
           <th>用户名</th>
           <th>密码</th>
           <th>年龄</th>
           <th>性别</th>
           <th>余额</th>
           <th>注册日期</th>
           <th>部门</th>
           <th>操作</th>
       </tr>
       </thead>
       <tbody>
       {% for t in list %}
       <tr>
           <td>{{t.id}}</td>
           <td>{{t.realname}}</td>
           <td>{{t.uname}}</td>
           <td>{{t.upass}}</td>
           <td>{{t.age}}</td>
           <td>{{t.get_sex_display }}</td>
           <td>{{t.money}}</td>
           <td>{{t.cts|date:'Y-m-d'}}</td>
           <td>{{t.dep.dname}}</td>

           <td>
               <a href="/users/toadd?id={{t.id}}"  class="btn btn-success">编辑</a>
               <a href="/users/del/{{t.id}}" class="btn btn-danger">删除</a>
           </td>
       </tr>
       {% endfor %}

       </tbody>
   </table>
{% endblock %}

layout.html

{% load static %}
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="https://cdn.staticfile.net/twitter-bootstrap/3.3.7/css/bootstrap.min.css">
    <script src="https://cdn.staticfile.net/jquery/2.1.1/jquery.min.js"></script>
    <script src="https://cdn.staticfile.net/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
<nav class="   navbar navbar-default navbar-fixed-top" role="navigation">
    <div class="container">
        <div class="navbar-header">
            <a class="navbar-brand" href="#">员工管理系统</a>
        </div>
        <div>
            <ul class="nav navbar-nav">
                <li ><a href="/dep/list">部门管理</a></li>
                <li><a href="/users/list">用户管理</a></li>

            </ul>
            <ul class="nav navbar-nav navbar-right">
                <li class="dropdown">
                    <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                        个人中心 <b class="caret"></b>
                    </a>
                    <ul class="dropdown-menu">
                        <li><a href="#">jmeter</a></li>
                        <li><a href="#">EJB</a></li>
                    </ul>
                </li>
            </ul>
        </div>
    </div>
</nav>

<div class="container" style="margin-top:70px;">
    {% block content %}  {% endblock %}
</div>

</body>
</html>