blog开发流程
1.分析博客页面：
1）完成网站的模块划分
2）从模板页面中抽象出父模板，完成模板页面继承
3）分析模块当中的数据模型，确定模型类当中的字段
2.分析博客实现的功能：
1）用户模块的注册登录，增删改查，模型类的继承，form验证，
2）一篇文章有一个作者，多个标签，一种类型，添加评论，浏览量，文章点赞
3）文章排行榜，归档
4）标签云
5）文章分页, 文章详情页
6）添加删除文章
#调用django内部用户模块，相关字段都封装好，可以扩展补充
from django.db import models
from datetime import datetime
from django.contrib.auth.models import AbstractUser
# Create your models here.
class UserProfile(AbstractUser):
"""
用户模块扩展,调用django内部模型类继承
"""
add_time = models.DateTimeField(default=datetime.now, verbose_name='添加时间')
nick_name = models.CharField(max_length=10, verbose_name='昵称', blank=True, null=True)
def __str__(self):
return self.username
class Meta:
verbose_name = '用户信息'
verbose_name_plural = verbose_name
配置url
from django.conf.urls import url
from .views import user_register, user_login, user_logout
urlpatterns = [
url(r'^user_register/$', user_register, name='user_register'),
url(r'^user_login/$', user_login, name='user_login'),
url(r'^user_logout/$', user_logout, name='user_logout'),
]
用户模块视图
from django.shortcuts import render, redirect
from .models import UserProfile
from django.core.urlresolvers import reverse
from django.contrib.auth import authenticate, login, logout
from .forms import UserRegisterForm, UserLoginForm
def user_register(request):
"""
用户注册模块
添加了form表单验证
"""
if request.method == 'GET':
return render(request, 'reg.html')
else:
# 实例form类，用来验证用户提交的数据
user_register_form = UserRegisterForm(request.POST)
if user_register_form.is_valid(): # 返回值为True或False
username = user_register_form.cleaned_data['username']
password = user_register_form.cleaned_data['password']
password1 = user_register_form.cleaned_data['password1']
user = UserProfile.objects.filter(username=username)
if user:
return render(request, 'reg.html', {
'mag': '账号已存在'
})
else:
if password1 == password:
a = UserProfile()
a.password = password
a.username = username
# 内部函数自动加密功能
a.set_password(password)
a.save()
return redirect(reverse('users:user_login'))
else:
return render(request, 'reg.html', {
'msg': '密码不一致'
})
else:
return render(request, 'reg.html', {
'user_register_form': user_register_form
})
def user_login(request):
"""
用户登录模块,调用django内部函数login,封装好了session功能
"""
if request.method == 'GET':
return render(request, 'login.html')
else:
user_login_form = UserLoginForm(request.POST)
if user_login_form.is_valid():
username = user_login_form.cleaned_data['username']
password = user_login_form.cleaned_data['password']
user = authenticate(username=username, password=password)
if user:
login(request, user)
return redirect(reverse('index'))
else:
return render(request, 'login.html', {
'msg': '用户名或者密码错误！',
'user_login_form': user_login_form
})
else:
pass
def user_logout(request):
"""
用户退出模块, 调用django内部函数logout
"""
logout(request)
return render(request, 'index.html')
用户模块增加forms.py文件用来设置form验证
from django import forms
class UserRegisterForm(forms.Form):
"""form表单注册验证"""
username = forms.CharField(max_length=20, min_length=6, required=True, error_messages={'invalid': '长度最大20，最小6'},)
email = forms.EmailField(error_messages={
# 自定义验证字段
'invalid': '格式不对,最大长度20,最小6'
}, required=False)
url = forms.URLField(error_messages={
'invalid': '格式不对,最大长度20,最小6'
}, required=False)
password = forms.CharField(max_length=20, min_length=6, required=True)
password1 = forms.CharField(max_length=20, min_length=6, required=True)
页面的代码完善，登录前显示注册和登录功能，登录后只显示姓名和退出功能。
抽象出父模板，设置子模板继承，避免每个页面代码的重复
子模板代码的变化单独一个页面
