Django 导出 Excel 代码的实例详解

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, messages.ERROR, '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, messages.ERROR, '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, blank = True, null=True)
demo_desc = models.CharField(max_length = 500, blank = True, null=True)
demo_cost = models.DecimalField(max_digits=15, decimal_places=2, blank = True, null=True)
demo_ex_cost = models.DecimalField(max_digits=15, decimal_places=2, blank = True, null=True)
demo_msrp = models.DecimalField(max_digits=15, decimal_places=2, blank = True, null=True)
demo_ex_msrp = models.DecimalField(max_digits=15, decimal_places=2, blank = True, 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',
'align': 'center',
'valign': 'top',
'border': 1
})
bold_header = workbook.add_format({
'bold': True,
'bg_color': '#F7F7F7',
'color': 'black',
'align': 'center',
'valign': 'top',
'border': 1
})
cell = workbook.add_format({
'align': 'left',
'valign': 'top',
'text_wrap': True,
'border': 1
})
bold_cell = workbook.add_format({
'bold': True,
'align': 'left',
'valign': 'top',
'text_wrap': True,
'border': 1
})
cell_center = workbook.add_format({
'align': 'center',
'valign': 'top',
'border': 1
})
# write header, this is row 1 in excel
worksheet_s.write(0, 0, _(HEADER_ITEM_TXT), header)
worksheet_s.write(0, 1, _(QTY_TXT), header)
worksheet_s.write(0, 2, _(PART_NUM_TXT), header)
worksheet_s.write(0, 3, _(NONFIO_SKU), header)
worksheet_s.write(0, 4, _(DESC_TXT), header)
worksheet_s.write(0, 5, _(COST_TXT), header)
worksheet_s.write(0, 6, _(EX_COST_TXT), header)
worksheet_s.write(0, 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, 0, _(SMART_BUY_TXT), cell)
if not sb.demo_qty:
sb.demo_qty = ''
worksheet_s.write(data_row, 1, sb.demo_qty, cell)
if not sb.demo_part_number:
sb.demo_part_number = ''
worksheet_s.write_string(data_row, 2, sb.demo_part_number, bold_cell)
worksheet_b.write_string(second_sheet_data_row, 0, sb.demo_part_number, cell)
second_sheet_data_row += 1
if not sb.demo_nonfio_sku:
sb.demo_nonfio_sku = ''
worksheet_s.write_string(data_row, 3, sb.demo_nonfio_sku, cell)
if not sb.demo_desc:
sb.demo_desc = ''
worksheet_s.write_string(data_row, 4, sb.demo_desc, cell)
if not sb.demo_cost:
sb.demo_cost = ''
worksheet_s.write(data_row, 5, sb.demo_cost, cell)
if not sb.demo_ex_cost:
sb.demo_ex_cost = ''
worksheet_s.write(data_row, 6, sb.demo_ex_cost, cell)
if not sb.demo_msrp:
sb.demo_msrp = ''
worksheet_s.write(data_row, 7, sb.demo_msrp, bold_cell)
if not sb.demo_ex_msrp:
sb.demo_ex_msrp = ''
worksheet_s.write(data_row, 8, 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 %}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。

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