嘉宾管理及签到功能（十二）
1.嘉宾管理列表页面，新建../templates/guest_manage.html页面。
<html lang="zh-CN">
<head>
{% load bootstrap3 %}
{% bootstrap_css %}
{% bootstrap_javascript %}
<title>Guest Managetitle>
}
head>
<body>
<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container">
<div class="navbar-header">
<a class="navbar-brand" href="/guest_manage/">Guest Manage Systema>
div>
<div id="navbar" class="collapse navbar-collapse">
<ul class="nav navbar-nav">
<li><a href="/event_manage/">发布会a>li>
<li class="active"><a href="#about">嘉宾a>li>
ul>
<ul class="nav navbar-nav navbar-right">
<li><a href="#">{{user}}a>li>
<li><a href="/logout/">退出a>li>
ul>
div>
div>
nav>
<div class="row" style="padding-top: 80px;">
<div class="col-md-6">
<table class="table table-striped">
<thead><tr>
<th>idth>
<th>名称th>
<th>手机th>
<th>Emailth>
<th>签到th>
<th>发布会idth>
tr>
thead>
<tbody>
{% for guest in guests %}
<tr>
<td>{{ guest.id }}td>
<td>{{ guest.realname }}td>
<td>{{ guest.phone }}td>
<td>{{ guest.email }}td>
<td>{{ guest.sign }}td>
<td>{{ guest.event }}td>
tr>
{% endfor %}
tbody>
table>
div>
div>
body>
html>2.在../FirstProject/urls.py文件中添加嘉宾路径的路由。
from django.conf.urls import url
from django.contrib import admin
from FirstApp import views
urlpatterns = [
url(r'^$', views.index),
url(r'^admin/', admin.site.urls),
url(r'^index/$', views.index),
url(r'^login_action/$', views.login_action),
url(r'^event_manage/$', views.event_manage),
url(r'^accounts/login/$', views.index),
url(r'^search_name/$', views.search_name),
url(r'^guest_manage/$', views.guest_manage),
]3.打开../FirstApp/views.py文件，创建guest_manage（）视图函数。
# 嘉宾管理
@login_required
def guest_manage(request):
username = request.session.get('user', '')
guest_list = Guest.objects.all()
return render(request, "guest_manage.html", {"user":username, "guests":guest_list})导入model中的guest类，通过guest.objects.all()查询所有嘉宾对象（数据），并通过render()方法附加在guest_manage.html页面，并返回给客户端。
到此，嘉宾列表页面完成。
4.分页器
Django提供了Paginator类来实现分页功能。打开../FirstApp/views.py文件，修改guest_manage()视图函数。
@login_required
def guest_manage(request):
guest_list = Guest.objects.all()
username = request.session.get('username', '')
paginator = Paginator(guest_list, 2)
page = request.GET.get('page')
try:
contacts = paginator.page(page)
except PageNotAnInteger:
# 如果页数不是整型, 取第一页.
contacts = paginator.page(1)
except EmptyPage:
# 如果页数超出查询范围，取最后一页
contacts = paginator.page(paginator.num_pages)
return render(request, "guest_manage.html", {"user": username, "guests": contacts})paginator = Paginator(guest_list, 2)
把查询出来的所有嘉宾列表guest_list放到Paginator类中，划分每页显示2条数据。
page = request.GET.get(‘page’)
通过GET请求得到当前要显示第几页的数据。
获取第page页的数据，如果没有第page页，抛出PageNotAnInteger异常，返回第一页的数据。如果超出页数范围，则抛出EmptyPage异常，返回最后一页的数据。
5.将得到的某页数据返回到嘉宾管理页面上，在../templates/guest_manage.html文件中添加分页器的代码。添加在嘉宾列表下面
<div class="pagination">
<span class="step-links">
{% if guests.has_previous %}
<a href="?phone={{ phone }}&page={{ guests.previous_page_number }}">previousa>
{% endif %}
<span class="current">
Page {{ guests.number }} of {{ guests.paginator.num_pages }}.
span>
{% if guests.has_next %}
{% if phone %}
<a href="?phone={{ phone }}&page={{ guests.next_page_number }}">nexta>
{% else %}
<a href="?page={{ guests.next_page_number }}">nexta>
{% endif %}
{% endif %}
span>
div>6.签到功能，添加签到链接，在../templates/event_manage.html页面，增加一列签到链接。
<div class="page-header">
<div id="navbar" class="navbar-collapse collapse">
<form class="navbar-form" method="get" action="/search_name/">
<div class="form-group">
<input name="name" type="text" placeholder="名称" class="form-control">
div>
<button type="submit" class="btn btn-success">搜索button>
form>
div>
div>
<div class="row">
<div class="col-md-6">
<table class="table table-striped">
<thead>
<tr>
<th>idth>
<th>名称th>
<th>状态th>
<th>地址th>
<th>时间th>
<th style="width: 45px;">签到th>
<th>签到正式th>
tr>
thead>
<tbody>
{% for event in events %}
<tr>
<td>{{ event.id }}td>
<td>{{ event.name }}td>
<td>{{ event.status }}td>
<td>{{ event.address }}td>
<td>{{ event.start_time }}td>
<td><a href="/sign_index/{{ event.id }}/" target="{{ event.id }}_blank">signa>td>
<td><a href="/sign_index2/{{ event.id }}/" target="{{ event.id }}_blank">sign_weba>td>
tr>
{% endfor %}
tbody>
table>
div>
div>7.在../FirstProject/urls.py文件中添加签到页面路径的路由。
from django.conf.urls import url
from django.contrib import admin
from FirstApp import views
urlpatterns = [
url(r'^$', views.index),
url(r'^admin/', admin.site.urls),
url(r'^index/$', views.index),
url(r'^login_action/$', views.login_action),
url(r'^event_manage/$', views.event_manage),
url(r'^accounts/login/$', views.index),
url(r'^search_name/$', views.search_name),
url(r'^guest_manage/$', views.guest_manage),
url(r'^sign_index/(?P[0-9]+)/$' , views.sign_index),
]8.创建签到页面，打开../FirstApp/views.py文件，创建sign_index()视图函数。
# 签到页面
@login_required
def sign_index(request, event_id):
event = get_object_or_404(Event, id=event_id)
return render(request, 'sign_index.html', {'even':event})
9.创建签到页面，打开../templates/sign_index.html.
<html>
<head>
<title>Sign Managetitle>
head>
<body>
<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container">
<div class="navbar-header">
<a class="navbar-brand" href="#">{{ event.name }}a>
div>
<div id="navbar" class="collapse navbar-collapse">
<ul class="nav navbar-nav">
<li><a href="/event_manage/">发布会a>li>
<li><a href="/guest_manage/">嘉宾a>li>
ul>
div>
div>
nav>
<div class="container theme-showcase" role="main">
<div id="navbar" class="navbar-collapse collapse">
<form class="navbar-form" method="post" action="/sign_index_action/{{event.id}}/">
<div class="form-group">
<input name="phone" type="text" placeholder="输入手机号" class="form-control">input>
div>
<button type="submit" class="btn btn-success">签到button>
<font color="red">
<br>{{hint}}
<br>{{guest.realname}}
<br>{{guest.phone}}
font>
form>
div>
div>
body>
html><form class="navbar-form" method="post" action="/sign_index_action/{{event.id}}/">签到表单通过POST请求将签到手机号提交到/sign_index_action /{{event.id}}/路径，{{event.id}}替换为具体的发布会id。
<font color="red">
<br>{{hint}}
<br>{{guest.realname}}
<br>{{guest.phone}}
font>{{hint}}用于显示签到成功和失败的提示信息；
当签到成功时，{{guest.realname}}和{{guest.phone}}将显示嘉宾的姓名和手机号。
10.签到动作，打开../FirstProject/urls.py文件，添加签到动作路径的路由。
from FirstApp import views
urlpatterns = [
.......
url(r'^sign_index_action/(?P[0-9]+)/$' , views.sign_index_action),
]11.打开../FirstApp/views.py文件，创建sign_index_action()视图函数。
# 签到动作
@login_required
def sign_index_action(request,eid):
event = get_object_or_404(Event, id=eid)
phone = request.POST.get(Event, id=eid)
print(phone)
result = Guest.objects.filter(phone=phone)
if not result:
return render(request, 'sign_index.html', {'event':event, 'hint':'phone error.'})
result = Guest.objects.filter(phone=phone, event_id = eid)
if not result:
return render(request, 'sign_index.html', {'event':event, 'hint':'event id or phone error.'})
result = Guest.objects.filter(phone=phone, event_id = eid)
if result.sign:
return render(request, 'sign_index.html', {'event':event, 'hint':'user has sign in.'})
else:
Guest.objects.filter(phone=phone, event_id = eid).update(sign='1')
return render(request, 'sign_index.html', {'event':event, 'hint':'sign in success!', 'guest':result})12.退出系统，打开../urls.py文件，添加退出路径的路由。
from FirstApp import views
urlpatterns = [
......
url(r'^logout/$', views.logout),
]13.打开../FirstApp/views.py文件，创建logout()视图函数。
# 退出登陆
@login_required
def logout(request):
auth.logout(request) # 退出登陆
response = HttpResponseRedirect('/index/')
return responseDjango不但提供了auth.login()方法用于验证登陆用户信息，同时也提供了auth.logout()方法用于系统的退出，它可以清除浏览器保存的用户信息，所以，不用再考虑如何删除浏览器cookie的问题。