So verwenden Sie Django zum Exportieren von Excel-Codeproblemen-Python-Tutorial-php.cn

In diesem Artikel werden hauptsächlich detaillierte Beispiele für den Export von Excel-Code durch Django vorgestellt. Der Herausgeber findet ihn recht gut, daher werde ich ihn jetzt mit Ihnen teilen und als Referenz verwenden. Folgen wir dem Editor und werfen wir einen Blick darauf.

In diesem technischen Beitrag geht es darum, wie man Excel unter dem Django-Framework exportiert. Ich hatte ursprünglich vor, Ajax-Beitragsdaten zu verwenden, stellte jedoch fest, dass dies nicht funktionierte, also wechselte ich zur get-Methode. Wenn es nur eine ID (pk) gibt, ist es sehr einfach, mit der get-Methode auf den entsprechenden Ansichtsbereich zuzugreifen. Wenn es jedoch mehrere IDs gibt, verwende ich session. Haben Sie weitere gute Beispiele? Ich hoffe auf eine gemeinsame Diskussion.

Python3.5 Django 1.10, sqlite3, Windows 10

1. virtualenv export_excel <--- Erstellen Sie eine virtuelle Umgebung für Django

2. cd export_excel <--- In den Ordner export_excel gehen

3. Scriptactive <--- env-Umgebung aktivieren.

Sobald die Umgebung aktiviert ist, wird in den Fenstern wie oben angezeigt.

4. pip install django.

5. <-- Bootstrap3 für Django.

6. pip install xlsxwriter.

"""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&#39;^$&#39;, views.home, name=&#39;home&#39;) 
Class-based views 
  1. Add an import: from other_app.views import Home 
  2. Add a URL to urlpatterns: url(r&#39;^$&#39;, Home.as_view(), name=&#39;home&#39;) 
Including another URLconf 
  1. Import the include() function: from django.conf.urls import url, include 
  2. Add a URL to urlpatterns: url(r&#39;^blog/&#39;, include(&#39;blog.urls&#39;)) 
""" 
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&#39;^admin/&#39;, admin.site.urls), 
  url(r&#39;^$&#39;, ListView.as_view(queryset = ExcelDemoData.objects.all().defer(&#39;id&#39;, &#39;part_number&#39;).order_by(&#39;id&#39;)[:100], template_name="part_num_list.html"), name = &#39;home&#39;), 
  url(r&#39;^demo/exportall/$&#39;, views.export_all_to_excel, name = &#39;export_all_to_excel&#39;), 
]

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3. models.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 == &#39;GET&#39;: 
    demo_list = [] 
    try: 
      demo_row = ExcelDemoData.objects.get(pk = pk) 
    except ExcelDemoData.DoesNotExist: 
      messages.add_message(request, messages.ERROR, &#39;the Part Number: [%s] does not exist in database.&#39; % str(pk)) 
    else:   
      demo_list.append(demo_row) 
        
    response = HttpResponse(content_type=&#39;application/ms-excel&#39;) 
    response[&#39;Content-Disposition&#39;] = &#39;attachment; filename=ExcelDemoData_%s.xlsx&#39; % 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 == &#39;GET&#39;: 
    if &#39;store_modi_id&#39; in request.session: 
       messages.add_message(request, messages.ERROR, &#39;The Part Number have been lost, please re-search them.&#39;) 
       return HttpResponseRedirect(reverse(&#39;home&#39;)) 
       
    demo_list = [] 
    pn_id_list = request.session[&#39;searched_sb_list&#39;] #<--- 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, &#39;the Part Number does not exist in database.&#39; ) 
      else:   
        demo_list.append(demo_row) 
        
    response = HttpResponse(content_type=&#39;application/ms-excel&#39;) 
    response[&#39;Content-Disposition&#39;] = &#39;attachment; filename=ExcelDemoData_%s.xlsx&#39; % attr.get_current_timestamp()  
    xlsx_data = WriteToExcel(demo_list) 
    response.write(xlsx_data) 
    return response

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4. 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) + &#39; Part Number: &#39; + self.demo_part_number

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5. excel_utils.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 ------ 
      &#39;demo_qty&#39;: forms.NumberInput(attrs = {&#39;class&#39;: INPUT_CSS}), 
      &#39;demo_part_number&#39;: forms.TextInput(attrs = {&#39;class&#39;: INPUT_CSS}), 
      &#39;demo_nonfio_sku&#39;: forms.TextInput(attrs = {&#39;class&#39;: INPUT_CSS}), 
      &#39;demo_desc&#39;: forms.TextInput(attrs = {&#39;class&#39;: SELECT_CSS}), 
      &#39;demo_cost&#39;: forms.TextInput(attrs = {&#39;class&#39;: INPUT_CSS}), 
      &#39;demo_ex_cost&#39;: forms.TextInput(attrs = {&#39;class&#39;: INPUT_CSS}), 
      &#39;demo_msrp&#39;: forms.TextInput(attrs = {&#39;class&#39;: INPUT_CSS}), 
      &#39;demo_ex_msrp&#39;: forms.TextInput(attrs = {&#39;class&#39;: INPUT_CSS}), 
    } 
     
    labels = { 
      # ----- Smart ------ 
      &#39;demo_qty&#39;: _(DEMO_TXT + &#39; &#39; + QTY_TXT), 
      &#39;demo_part_number&#39;: _(DEMO_TXT + &#39; &#39; + PART_NUM_TXT), 
      &#39;demo_nonfio_sku&#39;: _(DEMO_TXT + &#39; &#39; + NONFIO_SKU), 
      &#39;demo_desc&#39;: _(DEMO_TXT + &#39; &#39; + DESC_TXT), 
      &#39;demo_cost&#39;: _(DEMO_TXT + &#39; &#39; + COST_TXT), 
      &#39;demo_ex_cost&#39;: _(DEMO_TXT + &#39; &#39; + EX_COST_TXT), 
      &#39;demo_msrp&#39;: _(DEMO_TXT + &#39; &#39; + MSRP_TXT), 
      &#39;demo_ex_msrp&#39;: _(DEMO_TXT + &#39; &#39; + EX_MSRP_TXT), 
       
 
    } 
     
    exclude = []

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6. html

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(&#39;Smart Buy&#39;) 
  worksheet_b = workbook.add_worksheet(&#39;Part Number List&#39;) 
   
  # excel styles 
  title = workbook.add_format({ 
    &#39;bold&#39;: True, 
    &#39;font_size&#39;: 14, 
    &#39;align&#39;: &#39;center&#39;, 
    &#39;valign&#39;: &#39;vcenter&#39; 
  }) 
  header = workbook.add_format({ 
    &#39;bg_color&#39;: &#39;#F7F7F7&#39;, 
    &#39;color&#39;: &#39;black&#39;, 
    &#39;align&#39;: &#39;center&#39;, 
    &#39;valign&#39;: &#39;top&#39;, 
    &#39;border&#39;: 1 
  }) 
   
  bold_header = workbook.add_format({ 
    &#39;bold&#39;: True, 
    &#39;bg_color&#39;: &#39;#F7F7F7&#39;, 
    &#39;color&#39;: &#39;black&#39;, 
    &#39;align&#39;: &#39;center&#39;, 
    &#39;valign&#39;: &#39;top&#39;, 
    &#39;border&#39;: 1 
  }) 
   
  cell = workbook.add_format({ 
    &#39;align&#39;: &#39;left&#39;, 
    &#39;valign&#39;: &#39;top&#39;, 
    &#39;text_wrap&#39;: True, 
    &#39;border&#39;: 1 
  }) 
   
  bold_cell = workbook.add_format({ 
    &#39;bold&#39;: True, 
    &#39;align&#39;: &#39;left&#39;, 
    &#39;valign&#39;: &#39;top&#39;, 
    &#39;text_wrap&#39;: True, 
    &#39;border&#39;: 1 
  }) 
   
  cell_center = workbook.add_format({ 
    &#39;align&#39;: &#39;center&#39;, 
    &#39;valign&#39;: &#39;top&#39;, 
    &#39;border&#39;: 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, &#39;&#39;, 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 = &#39;&#39; 
    worksheet_s.write(data_row, 1, sb.demo_qty, cell) 
    if not sb.demo_part_number: 
      sb.demo_part_number = &#39;&#39;  
    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 = &#39;&#39; 
    worksheet_s.write_string(data_row, 3, sb.demo_nonfio_sku, cell) 
    if not sb.demo_desc: 
      sb.demo_desc = &#39;&#39;  
    worksheet_s.write_string(data_row, 4, sb.demo_desc, cell) 
    if not sb.demo_cost:  
      sb.demo_cost = &#39;&#39; 
    worksheet_s.write(data_row, 5, sb.demo_cost, cell) 
    if not sb.demo_ex_cost:  
      sb.demo_ex_cost = &#39;&#39; 
    worksheet_s.write(data_row, 6, sb.demo_ex_cost, cell) 
    if not sb.demo_msrp:  
      sb.demo_msrp = &#39;&#39; 
    worksheet_s.write(data_row, 7, sb.demo_msrp, bold_cell) 
    if not sb.demo_ex_msrp: 
       sb.demo_ex_msrp = &#39;&#39; 
    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(&#39;A:A&#39;, item_name_col_width) 
    if sb.demo_qty: worksheet_s.set_column(&#39;B:B&#39;, qty_col_width) 
    if sb.demo_qty: worksheet_s.set_column(&#39;C:C&#39;, part_num_col_width) 
    if sb.demo_qty: worksheet_s.set_column(&#39;D:D&#39;, nonfio_sku_col_width) 
    if sb.demo_qty: worksheet_s.set_column(&#39;E:E&#39;, desc_col_width) 
    if sb.demo_qty: worksheet_s.set_column(&#39;F:F&#39;, cost_col_width) 
    if sb.demo_qty: worksheet_s.set_column(&#39;G:G&#39;, ex_cost_col_width) 
    if sb.demo_qty: worksheet_s.set_column(&#39;H:H&#39;, msrp_col_width) 
    if sb.demo_qty: worksheet_s.set_column(&#39;I:I&#39;, ex_msrp_col_width) 
     
    # for each smart buy data end <<<------ 
     
    # change column widths 
    worksheet_s.set_column(&#39;A:A&#39;, item_name_col_width) 
    worksheet_s.set_column(&#39;B:B&#39;, qty_col_width) 
    worksheet_s.set_column(&#39;C:C&#39;, part_num_col_width) 
    worksheet_b.set_column(&#39;A:A&#39;, part_num_col_width) 
    worksheet_s.set_column(&#39;D:D&#39;, nonfio_sku_col_width) 
    worksheet_s.set_column(&#39;E:E&#39;, desc_col_width) 
    worksheet_s.set_column(&#39;F:F&#39;, cost_col_width) 
    worksheet_s.set_column(&#39;G:G&#39;, ex_cost_col_width) 
    worksheet_s.set_column(&#39;H:H&#39;, msrp_col_width) 
    worksheet_s.set_column(&#39;I:I&#39;, ex_msrp_col_width) 
     
  # close workbook 
  workbook.close() 
  xlsx_data = output.getvalue() 
  return xlsx_data

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