Django URL参数传递与反向解析实战

url(r'^articles/(?P<year>[0-9]{4})/(?P<month>[0-9]{2})/$', views.month_archive),

url(r'^articles/([0-9]{4})/$', views.year_archive, name='news-year-archive'),

from django.conf.urls import url
from django.contrib import admin
import echo.views
 
urlpatterns = [
  url(r'^admin/', admin.site.urls),
  #内容显示,并通过定义name，来进行反向解析
  url(r'^lists/(?P<table>\w+)/$', echo.views.lists, name='lists'),
  #增加内容
  url(r'^add/(?P<table>\w+)/$', echo.views.add, name='add'),
]

# -*- coding: UTF-8 -*-
from .models import Node,Line,Device
from forms import NodeForm,LineForm,DeviceForm
from django.shortcuts import render, redirect
# Create your views here.
 
def lists(request, table):
  #从根据不同的请求，来获取相应的数据,并跳转至相应页面
  if table == 'node':
    data = Node.objects.all()
    list_template = 'node_list.html'
  if table == 'line':
    data = Line.objects.all()
    list_template = 'line_list.html'
  if table == 'device':
    data = Device.objects.all()
    list_template = 'device_list.html'
  #建立context字典，将值传递到相应页面
  context = {
    'data': data,
  }
  #跳转到相应页面，并将值传递过去
  return render(request,list_template,context)
 
def add(request, table):
 
  #根据提交的请求不同，获取来自不同Form的表单数据
  if table == 'node':
    form = NodeForm(request.POST or None)
  if table == 'line':
    form = LineForm(request.POST or None)
  if table == 'device':
    form = DeviceForm(request.POST or None)
  #判断form是否有效
  if form.is_valid():
    #创建实例，需要做些数据处理，暂不做保存
    instance = form.save(commit=False)
    #将登录用户作为登记人
    if table == 'node':
      instance.node_signer = request.user
    if table == 'line':
      instance.line_signer = request.user
    if table == 'device':
      instance.device_signer = request.user
    #保存该实例
    instance.save()
    #跳转至列表页面,配合table参数，进行URL的反向解析
    return redirect('lists', table=table)
 
  #创建context来集中处理需要传递到页面的数据
  context = {
    'form': form,
  }
  #如果没有有效提交，则仍留在原来页面
  return render(request, 'add.html', context)

<!DOCTYPE html>
<html>
<head lang="en">
  <meta charset="UTF-8">
  <title></title>
</head>
<body>
 <form method='POST' action=''>{% csrf_token %}
    {{ form }}
    <input type='submit' value='提交' />
 </form>
 
</body>
</html>

<!DOCTYPE html>
<html>
<head lang="en">
  <meta charset="UTF-8">
  <title></title>
</head>
<body>
  <table>
    <tr>
      <th>设备名称</th>
      <th>设备型号</th>
    </tr>
    {% for item in data %}
      <tr>
        <td>{{ item.device_caption }}</td>
        <td>{{ item.device_type }}</td>
      </tr>
    {% endfor %}
  </table>
</body>
</html>

<!DOCTYPE html>
<html>
<head lang="en">
  <meta charset="UTF-8">
  <title></title>
</head>
<body>
  <table>
    <tr>
      <th>线路名称</th>
      <th>线路速率</th>
      <th>线路类型</th>
    </tr>
    {% for item in data %}
      <tr>
        <td>{{ item.line_code }}</td>
        <td>{{ item.line_speed }}</td>
        <td>{{ item.line_type }}</td>
      </tr>
    {% endfor %}
  </table>
</body>
</html>

<!DOCTYPE html>
<html>
<head lang="en">
  <meta charset="UTF-8">
  <title></title>
</head>
<body>
  <table>
    <tr>
      <th>节点名称</th>
      <th>节点地址</th>
      <th>节点类型</th>
    </tr>
    {% for item in data %}
      <tr>
        <td>{{ item.node_name }}</td>
        <td>{{ item.node_address }}</td>
        <td>{{ item.node_type }}</td>
      </tr>
    {% endfor %}
  </table>
</body>
</html>