本文实例讲述了django框架使用模板。分享给大家供大家参考，具体如下：
models.py：
from django.db import models # Create your models here. class Book(models.Model): title=models.CharField(max_length=32,unique=True) price=models.DecimalField(max_digits=8,decimal_places=2,null=True) pub_date=models.DateField() publish=models.CharField(max_length=32) is_pub=models.BooleanField(default=True) authors=models.ManyToManyField(to="Author") class AuthorDetail(models.Model): gf=models.CharField(max_length=32) tel=models.CharField(max_length=32) class Author(models.Model): name=models.CharField(max_length=32) age=models.IntegerField() # 与AuthorDetail建立一对一的关系 # ad=models.ForeignKey(to="AuthorDetail",to_field="id",on_delete=models.CASCADE,unique=True) #OneToOneField 表示创建一对一关系。on_delete=models.CASCADE 表示级联删除。假设a表删除了一条记录，b表也还会删除对应的记录 ad=models.OneToOneField(to="AuthorDetail",to_field="id",on_delete=models.CASCADE,)
urls.py：
from django.conf.urls import url from django.contrib import admin from app01 import views urlpatterns = [ url(r'^admin/', admin.site.urls), # url(r'',views.index),#这一条不能放上面，会造成死循环 url(r'index/$',views.index), url(r'books/add/$',views.add), url(r'books/manage/',views.manage), url(r'books/delete/(?P\d+)',views.delete), url(r'books/modify/(?P \d+)',views.modify), ]
views.py：
from django.shortcuts import render,HttpResponse
from app01 import models
# Create your views here.
def index(request):
ret=models.Book.objects.all().exists()#True 和 False
if ret:
book_list=models.Book.objects.all()
return render(request,'index.html',{'book_list':book_list})
else:
# hint=''
hint=''
return HttpResponse(hint)
def add(request):
if request.method=="POST":
title=request.POST.get("title")
price=request.POST.get("price")
pub_date=request.POST.get("pub_date")
publish=request.POST.get("publish")
is_pub=request.POST.get("is_pub")
#插入一条记录
obj=models.Book.objects.create(title=title,price=price,publish=publish,pub_date=pub_date,is_pub=is_pub)
print(obj.title)
hint = ''
return HttpResponse(hint)
return render(request,"add.html")
def manage(request):
ret=models.Book.objects.all().exists()
print(ret)
if ret:
book_list=models.Book.objects.all()
return render(request,"manage.html",{"book_list":book_list})
else:
hint=''
return HttpResponse(hint)
def delete(request,id):
ret=models.Book.objects.filter(id=id).delete()
print('删除记录%s'%ret)
if ret[0]:
hint=''
return HttpResponse(hint)
else:
hint=''
return HttpResponse(hint)
def modify(request,id):
if request.method=="POST":
title=request.POST.get('title')
price = request.POST.get("price")
pub_date = request.POST.get("pub_date")
publish = request.POST.get("publish")
is_pub = request.POST.get("is_pub")
# 更新一条记录
ret = models.Book.objects.filter(id=id).update(title=title, price=price, publish=publish, pub_date=pub_date,
is_pub=is_pub)
print('更新记录%s'%ret)
if ret: # 判断返回值为1
hint = ''
return HttpResponse(hint) # js跳转
else: # 返回为0
hint = ''
return HttpResponse(hint) # js跳转
book=models.Book.objects.get(id=id)
return render(request,"modify.html",{"book":book})
index.html:
{% extends 'base.html' %}
{% block title %}
查看书籍
{% endblock title %}
{% block content %}
查看书籍
| 名称 | 价格 | 出版日期 | 出版社 | 是否出版 |
|---|---|---|---|---|
| {{ book.title }} | {{ book.price }} | {{ book.pub_date|date:"Y-m-d" }} | {{ book.publish }} | {% if book.is_pub %} 已出版 {% else %} 未出版 {% endif %} |
add.html：
{% extends 'base.html' %}
{% block title %}
添加书籍
{% endblock title %}
{% block content %}
添加书籍
{% endblock content %}
base.html:
{% block title %}
Title
{% endblock title %}
书籍操作
manage.py：
{% extends 'base.html' %}
{% block title %}
管理书籍
{% endblock title %}
{% block content %}
管理书籍
modify.py:
{% extends 'base.html' %}
{% block title %}
修改书籍
{% endblock title %}
{% block content %}
修改书籍
{% endblock content %}
django使用一对多和多对多关系建表之后的增删改查
-------models.py-----
from django.db import models
# Create your models here.
class Book(models.Model):
title=models.CharField(max_length=32)
price=models.DecimalField(max_digits=6,decimal_places=2)
create_time=models.DateField()
memo=models.CharField(max_length=32,default="")
publish=models.ForeignKey(to="Publish",default=1)
author=models.ManyToManyField("Author")#on_delete=models.CASCADE()默认级联删除
def __str__(self):
return self.title
class Publish(models.Model):
name=models.CharField(max_length=32)
email=models.CharField(max_length=32)
class Author(models.Model):
name=models.CharField(max_length=32)
def __str__(self): return self.name
-----urls.py----
from django.conf.urls import url,include from django.contrib import admin from app01 import views urlpatterns = [ url(r'^admin/', admin.site.urls), url(r'^books/$',views.books), #查看 url(r'^addbook/$',views.addbook), #增加 url(r'^delbook/(\d+)/$',views.delbook), #删除 url(r'editbook/(\d+)/$',views.editbook), #修改 ]
----views.py 在app01下面-------
from django.shortcuts import render,HttpResponse,redirect
from .models import *
def books(request):
book_list=Book.objects.all()
return render(request,"books.html",locals())
def addbook(request):
if request.method=="POST":
title=request.POST.get("title") #get方法取的是html页面中的name属性
price= request.POST.get("price")
date = request.POST.get("date")
publish_id=request.POST.get("publish_id")
# author_id_list = request.POST.get("author_id_list") #此方法只能取到最后一个值
author_id_list = request.POST.getlist("author_id_list") #有多个值的注意要用getlist
#绑定书籍与出版社一对多的关系
obj=Book.objects.create(title=title,price=price,create_time=date,publish_id=publish_id)
#绑定书籍与作者多对多的关系
obj.author.add(*author_id_list)
# obj.author.remove(1,2) #解除关系
# obj.author.clear() #清空所有关系
return redirect("/books/")
else:
publish_list=Publish.objects.all()
author_list=Author.objects.all()
return render(request,"addbook.html",locals())
def delbook(request,id):
Book.objects.filter(id=id).delete()
return redirect("/books/")
def editbook(request,id):
if request.method=="POST":
title=request.POST.get("title") #get方法取的是html页面中的name属性
price=request.POST.get("price")
date=request.POST.get("date")
publish_id=request.POST.get("publish_id")
author_id_list=request.POST.getlist("author_id_list")
Book.objects.filter(id=id).update(title=title,price=price,create_time=date,publish_id=publish_id)
book=Book.objects.filter(id=id).first()
# book.author.clear()
# book.author.add(*author_id_list)
book.author.set(author_id_list) #相当于上面两条
return redirect ("/books/")
edit_obj=Book.objects.filter(id=id).first() #加first从queryset得到 models对象
publish_list = Publish.objects.all()
author_list = Author.objects.all()
return render(request,"editbook.html",locals())
----books.html----
Title
-----addbook.html-----
Title
-------editbook.html-----
Title
希望本文所述对大家基于Django框架的Python程序设计有所帮助。