概述

这篇技术贴讲怎样在Django的框架下导出Excel， 最开始打算用ajax post data 过去，但是发现不行，所以改用了get的方式。如果只有一个id(pk)那用get的方式很简单就可以访问对应的view section，但是如果是多个ids，我用的是session，大家还有其他好的例子吗？希望一起讨论。

python3.5 Django 1.10,sqlite3,windows 10

1. virtualenv export_excel  <--- create a virtualenv for django

2. cd export_excel   <--- Go into the export_excel folder

3. Script\active <--- activate env environment.

once activate the environment,in the windows would be liked as above.

4. pip install django.

5. pip install django-bootstrap3. <-- bootstrap3 for django.

6. pip install xlsxwriter.  <-- this uses for excel export.(用xlsxwriter 这个Python 库)

1. urls.py

"""export_excel URL Configuration 
 
 
The `urlpatterns` list routes URLs to views. For more information please see: 
  https://docs.djangoproject.com/en/1.10/topics/http/urls/ 
Examples: 
Function views 
  1. Add an import: from my_app import views 
  2. Add a URL to urlpatterns: url(r'^$',views.home,name='home') 
Class-based views 
  1. Add an import: from other_app.views import Home 
  2. Add a URL to urlpatterns: url(r'^$',Home.as_view(),name='home') 
Including another URLconf 
  1. Import the include() function: from django.conf.urls import url,include 
  2. Add a URL to urlpatterns: url(r'^blog/',include('blog.urls')) 
""" 
from django.conf.urls import url 
from django.contrib import admin 
from django.views.generic import ListView 
 
 
from .models import ExcelDemoData 
from . import views 
 
 
urlpatterns = [ 
  url(r'^admin/',admin.site.urls),url(r'^$',ListView.as_view(queryset = ExcelDemoData.objects.all().defer('id','part_number').order_by('id')[:100],template_name="part_num_list.html"),name = 'home'),url(r'^demo/exportall/$',views.export_all_to_excel,name = 'export_all_to_excel'),] 

2. views.py

from django.http import JsonResponse,Http404 
from django.shortcuts import render,get_object_or_404,render_to_response  
from django.http import HttpResponseRedirect 
from django.contrib import messages 
from django.core.urlresolvers import reverse 
from django.http import HttpResponse 
 
from .models import ExcelDemoData 
from .forms import ExcelDemoForm 
from .excel_utils import WriteToExcel 
 
from . import attrs_override as attr 
 
     
def export_sig_to_excel(request,pk): 
 
  if request.method == 'GET': 
    demo_list = [] 
    try: 
      demo_row = ExcelDemoData.objects.get(pk = pk) 
    except ExcelDemoData.DoesNotExist: 
      messages.add_message(request,messages.ERROR,'the Part Number: [%s] does not exist in database.' % str(pk)) 
    else:   
      demo_list.append(demo_row) 
        
    response = HttpResponse(content_type='application/ms-excel') 
    response['Content-Disposition'] = 'attachment; filename=ExcelDemoData_%s.xlsx' % demo_row.demo_row_part_number  
    xlsx_data = WriteToExcel(demo_list) 
    response.write(xlsx_data) 
    return response 
         
         
def export_all_to_excel(request): 
  if request.method == 'GET': 
    if 'store_modi_id' in request.session: 
       messages.add_message(request,'The Part Number have been lost,please re-search them.') 
       return HttpResponseRedirect(reverse('home')) 
       
    demo_list = [] 
    pn_id_list = request.session['searched_sb_list'] #<--- the session will be created when a list page was created. 
    for id in pn_id_list: 
      try: 
        demo_row = ExcelDemoData.objects.get(pk = id) 
      except SmartBuy.DoesNotExist: 
        messages.add_message(request,'the Part Number does not exist in database.' ) 
      else:   
        demo_list.append(demo_row) 
        
    response = HttpResponse(content_type='application/ms-excel') 
    response['Content-Disposition'] = 'attachment; filename=ExcelDemoData_%s.xlsx' % attr.get_current_timestamp()  
    xlsx_data = WriteToExcel(demo_list) 
    response.write(xlsx_data) 
    return response 

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