Django 导出 Excel 代码的实例详解
发布时间：2020-12-17 08:10:46 所属栏目：Python 来源：网络整理
导读：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？
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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. Scriptactive <--- 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
3. models.py
from django.db import models
# Create your models here.
class ExcelDemoData(models.Model):
# ---- this is ExcelDemoData scope ----
demo_qty = models.PositiveIntegerField(blank = True,null=True)
demo_part_number = models.CharField(max_length = 20,blank = True,null=True) # smart buy part number cannot be empty.
demo_nonfio_sku = models.CharField(max_length = 200,null=True)
demo_desc = models.CharField(max_length = 500,null=True)
demo_cost = models.DecimalField(max_digits=15,decimal_places=2,null=True)
demo_ex_cost = models.DecimalField(max_digits=15,null=True)
demo_msrp = models.DecimalField(max_digits=15,null=True)
demo_ex_msrp = models.DecimalField(max_digits=15,null=True)
def __str__(self):
return str(self.pk) + ' Part Number: ' + self.demo_part_number
4. forms.py
from django import forms
from django.utils.translation import ugettext_lazy as _
from .models import ExcelDemoData
from .attrs_override import *
class ExcelDemoForm(forms.ModelForm):
class Meta:
model = <span style="font-family: Arial,Helvetica,sans-serif;">ExcelDemoData</span>
widgets = {
# ----- Smart ------
'demo_qty': forms.NumberInput(attrs = {'class': INPUT_CSS}),'demo_part_number': forms.TextInput(attrs = {'class': INPUT_CSS}),'demo_nonfio_sku': forms.TextInput(attrs = {'class': INPUT_CSS}),'demo_desc': forms.TextInput(attrs = {'class': SELECT_CSS}),'demo_cost': forms.TextInput(attrs = {'class': INPUT_CSS}),'demo_ex_cost': forms.TextInput(attrs = {'class': INPUT_CSS}),'demo_msrp': forms.TextInput(attrs = {'class': INPUT_CSS}),'demo_ex_msrp': forms.TextInput(attrs = {'class': INPUT_CSS}),}
labels = {
# ----- Smart ------
'demo_qty': _(DEMO_TXT + ' ' + QTY_TXT),'demo_part_number': _(DEMO_TXT + ' ' + PART_NUM_TXT),'demo_nonfio_sku': _(DEMO_TXT + ' ' + NONFIO_SKU),'demo_desc': _(DEMO_TXT + ' ' + DESC_TXT),'demo_cost': _(DEMO_TXT + ' ' + COST_TXT),'demo_ex_cost': _(DEMO_TXT + ' ' + EX_COST_TXT),'demo_msrp': _(DEMO_TXT + ' ' + MSRP_TXT),'demo_ex_msrp': _(DEMO_TXT + ' ' + EX_MSRP_TXT),}
exclude = []
5. excel_utils.py
try:
from BytesIO import BytesIO
except ImportError:
from io import BytesIO
import xlsxwriter
from django.utils.translation import ugettext as _
from .models import ExcelDemoData
from .attrs_override import *
def WriteToExcel(demo_list):
output = BytesIO()
workbook = xlsxwriter.Workbook(output)
worksheet_s = workbook.add_worksheet('Smart Buy')
worksheet_b = workbook.add_worksheet('Part Number List')
# excel styles
title = workbook.add_format({
'bold': True,'font_size': 14,'align': 'center','valign': 'vcenter'
})
header = workbook.add_format({
'bg_color': '#F7F7F7','color': 'black','valign': 'top','border': 1
})
bold_header = workbook.add_format({
'bold': True,'bg_color': '#F7F7F7','border': 1
})
cell = workbook.add_format({
'align': 'left','text_wrap': True,'border': 1
})
bold_cell = workbook.add_format({
'bold': True,'align': 'left','border': 1
})
cell_center = workbook.add_format({
'align': 'center','border': 1
})
# write header,this is row 1 in excel
worksheet_s.write(0,_(HEADER_ITEM_TXT),header)
worksheet_s.write(0,1,_(QTY_TXT),2,_(PART_NUM_TXT),3,_(NONFIO_SKU),4,_(DESC_TXT),5,_(COST_TXT),6,_(EX_COST_TXT),7,_(MSRP_TXT),bold_header)
worksheet_s.write(0,8,_(EX_MSRP_TXT),header)
# column widths
item_name_col_width = 20
qty_col_width = 10
part_num_col_width = 20
nonfio_sku_col_width = 30
desc_col_width = 80
cost_col_width = 10
ex_cost_col_width= 10
msrp_col_width = 10
ex_msrp_col_width = 10
# add data into the table
data_row = 1
second_sheet_data_row = 0
for sb in demo_list:
if data_row is not 1:
for index in range(9):
worksheet_s.write(data_row,index,'',cell)
data_row += 1
# this is for smartbuy row,row 2 in excel
worksheet_s.write_string(data_row,_(SMART_BUY_TXT),cell)
if not sb.demo_qty:
sb.demo_qty = ''
worksheet_s.write(data_row,sb.demo_qty,cell)
if not sb.demo_part_number:
sb.demo_part_number = ''
worksheet_s.write_string(data_row,sb.demo_part_number,bold_cell)
worksheet_b.write_string(second_sheet_data_row,cell)
second_sheet_data_row += 1
if not sb.demo_nonfio_sku:
sb.demo_nonfio_sku = ''
worksheet_s.write_string(data_row,sb.demo_nonfio_sku,cell)
if not sb.demo_desc:
sb.demo_desc = ''
worksheet_s.write_string(data_row,sb.demo_desc,cell)
if not sb.demo_cost:
sb.demo_cost = ''
worksheet_s.write(data_row,sb.demo_cost,cell)
if not sb.demo_ex_cost:
sb.demo_ex_cost = ''
worksheet_s.write(data_row,sb.demo_ex_cost,cell)
if not sb.demo_msrp:
sb.demo_msrp = ''
worksheet_s.write(data_row,sb.demo_msrp,bold_cell)
if not sb.demo_ex_msrp:
sb.demo_ex_msrp = ''
worksheet_s.write(data_row,sb.demo_ex_msrp,cell)
# for each smart buy data end <<<------
# change column widths
if sb.demo_qty: worksheet_s.set_column('A:A',item_name_col_width)
if sb.demo_qty: worksheet_s.set_column('B:B',qty_col_width)
if sb.demo_qty: worksheet_s.set_column('C:C',part_num_col_width)
if sb.demo_qty: worksheet_s.set_column('D:D',nonfio_sku_col_width)
if sb.demo_qty: worksheet_s.set_column('E:E',desc_col_width)
if sb.demo_qty: worksheet_s.set_column('F:F',cost_col_width)
if sb.demo_qty: worksheet_s.set_column('G:G',ex_cost_col_width)
if sb.demo_qty: worksheet_s.set_column('H:H',msrp_col_width)
if sb.demo_qty: worksheet_s.set_column('I:I',ex_msrp_col_width)
# for each smart buy data end <<<------
# change column widths
worksheet_s.set_column('A:A',item_name_col_width)
worksheet_s.set_column('B:B',qty_col_width)
worksheet_s.set_column('C:C',part_num_col_width)
worksheet_b.set_column('A:A',part_num_col_width)
worksheet_s.set_column('D:D',nonfio_sku_col_width)
worksheet_s.set_column('E:E',desc_col_width)
worksheet_s.set_column('F:F',cost_col_width)
worksheet_s.set_column('G:G',ex_cost_col_width)
worksheet_s.set_column('H:H',msrp_col_width)
worksheet_s.set_column('I:I',ex_msrp_col_width)
# close workbook
workbook.close()
xlsx_data = output.getvalue()
return xlsx_data
6. html
{% extends "base.html" %}
{% block content %}
<div id="form_body" style="margin:20px;">
<table class="table">
<tr>
<td style="float: left"><a href="{% url 'home' %}" rel="external nofollow" class="btn btn-primary" role="button">Back</a></td>
<td style="float: right">
{% if export_all %}
<a href="javascript:void(0)" rel="external nofollow" rel="external nofollow" class="btn btn-primary" role="button" data-loading-text="<i class='fa fa-circle-o-notch fa-spin'></i> Processing Export..." id="export_all_excel_a" onclick="javascript: getExportExcels('all');">Export All to Excel</a>
{% endif %}</td>
</tr>
</table>
</div>
<div class="table-responsive">
<table class="table table-bordered usr_def_tbl">
<thead class="thead-inverse">
<tr style="font-size:14px; text-align: center;">
<th> </th>
<th>Qty</th>
<th>Part Number</th>
<th>NonFIO SKU</th>
<th>Description</th>
<th>Cost</th>
<th>Ex.Cost</th>
<th>MSRP</th>
<th>ex.MSRP</th>
</tr>
</thead>
<tbody>
{% for s in demo_list %}
<!-- this is demo list sections -->
<tr>
<td>Demo</td>
<td>{% if s.demo_qty %}{{ s.demo_qty }}{% endif %} </td>
<td>{% if s.demo_part_number %}{{ s.demo_part_number }}{% endif %} </td>
<td>{% if s.demo_nonfio_sku %}{{ s.demo_nonfio_sku }}{% endif %} </td>
<td>{% if s.demo_desc %}{{ s.demo_desc }}{% endif %} </td>
<td>{% if s.demo_cost %}{{ s.demo_cost }}{% endif %} </td>
<td>{% if s.demo_ex_cost %}{{ s.demo_ex_cost }}{% endif %} </td>
<td>{% if s.demo_msrp %}{{ s.demo_msrp }}{% endif %} </td>
<td>{% if s.demo_ex_msrp %}{{ s.demo_ex_msrp }}{% endif %}</td>
</tr>
<tr>
<td colspan="7"></td>
<td style="text-align:right">
<a href="javascript:void(0)" rel="external nofollow" rel="external nofollow" class="btn btn-primary part_num_flag" role="button" onclick="javascript: getExportExcels('{{ s.pk }}');" data-loading-text="<i class='fa fa-circle-o-notch fa-spin'></i> Processing Export..." id="sgl_export_{{ s.pk }}" >Export to Excel</a>
</td>
<td style="text-align:right">
<a href="{% url 'demo_edit_id' pk=s.pk%}" rel="external nofollow" class="btn btn-primary" role="button" value="{{ s.pk }}">Edit</a>
</td>
</tr>
{% endfor %}
</tbody>
<p></p>
</table>
</div>
<script type="text/javascript">
function getExportExcels(pn_id){
if(pn_id == 'all'){
var post_url = '/demo/exportall/';
location.replace(post_url);
}
else{
var post_url = '/demo/export/';
location.replace(post_url + pn_id);
}
}
</script>
{% endblock content %}
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