<玩转Django2.0>读书笔记:邮件和分页

1. 发送邮件

# settings.py设置
# 邮箱设置
EMAIL_USE_SSL = True
# 邮件服务器
EMAIL_HOST = 'smtp.qq.com'
# 邮件服务端口
EMAIL_PORT = 465
# 发送邮件账号
EMAIL_HOST_USER = "1223936862@qq.com"
# SMTP服务密码
EMAIL_HOST_PASSWORD = "oxwxxxxxgbrvjejc"
DEFAULT_FROM_EMAIL = EMAIL_HOST_USER

# views.py代码
from django.conf import settings
from django.core.mail import send_mail,send_mass_mail,EmailMultiAlternatives
def email_views(request):# 获取 settings.py 的配置信息
    from_email = settings.DEFAULT_FROM_EMAIL

    # # send_mail每次发邮件都会建立一个新的连接,如果发送多封邮件,就需要建立多个连接
    # send_mail("汪小鹏","来自Django的Email",from_email,['13387234406@qq.com'])

    # # send_mass_mail发送多封邮件
    # message1 = ("汪小鹏","来自Django的Email",from_email,['13387234406@qq.com'])
    # message2 = ("汪小鹏","来自Django的Email",from_email,['wangxp1994@outlook.com'])
    # send_mass_mail((message1,message2),fail_silently=False)

    # EmailMultiAlternatives发送邮件
    content = '<p>这是一封<strong>重要的</strong>邮件</p>'
    msg = EmailMultiAlternatives('汪小鹏',content,from_email,['13387234406@qq.com'])
    # 将正文设置成HTML格式
    msg.content_subtype = "html"
    # 对正文内容进行补充和添加
    msg.attach_alternative('<strong>邮件来自Django</strong>','text/html')
    # 添加附件
    msg.attach_file('test.txt')
    msg.send()    

    return HttpResponse("发送成功")

2. 分页功能

# urls.py
...
path('page/<page>',product_views),
...

# views.py
from django.core.paginator import Paginator,EmptyPage,PageNotAnInteger
def product_views(request,page):
    # 获取数据表全部数据
    Product_list = Product.objects.all()
    # 设置每一页数据量为3
    paginator = Paginator(Product_list, 3)

    try:
        # 获取某一页的数据对象
        pageInfo = paginator.page(page)
    except PageNotAnInteger:
        # 如果page的数据类型不是整型,就返回第一页
        pageInfo = paginator.page(1)
    except EmptyPage:
        # 若用户访问的页数大于实际页数,则返回最后一页
        pageInfo = paginator.page(paginator.num_pages)

        print("="*20)

    # 输出分页的全部数据
    print(paginator.object_list)
    # 获取当前被分页的数据总量
    print(paginator.count)
    # 获取分页的总页数
    print(paginator.num_pages)
    # 将页数转换成range循环对象
    print(paginator.page_range)
    # 判断当前页是否存在上一页
    print("上一页",pageInfo.has_previous())
    # 如果当前页数存在上一页,输出上一页页数,否则抛出Empty异常
    print("上一页码",pageInfo.previous_page_number())
    # 判断当前页是否存在上一页
    print("下一页",pageInfo.has_next())
    # 如果当前页数存在下一页,输出下一页页数,否则抛出Empty异常
    print("下一页码",pageInfo.next_page_number())
    # 输出当前页的数据信息
    print("当前页",pageInfo.object_list)
    # 输出当前页的第一条数据在整个数据表的位置,从1开始计算
    print(pageInfo.start_index())
    # 输出当前页的最后一条数据在整个数据表的位置,从1开始计算
    print(pageInfo.end_index())
    return render(request,"page.html",locals())