Django XlsxWriter/OpenPyXl对象另存为HttpResponse以创建下载
这件事让我挠头太久了。就这样- 我正在尝试将一个用户模型类导出为excel工作表,对其进行一些更改后,将其作为HttpResponse对象返回以供下载。以下是我的查看代码:Django XlsxWriter/OpenPyXl对象另存为HttpResponse以创建下载,django,excel,openpyxl,xlsxwriter,Django,Excel,Openpyxl,Xlsxwriter,这件事让我挠头太久了。就这样- 我正在尝试将一个用户模型类导出为excel工作表,对其进行一些更改后,将其作为HttpResponse对象返回以供下载。以下是我的查看代码: if request.method == 'POST': form = ExportStudentscsv(request.POST) if form.is_valid(): data = form.cleaned_data #get course from dropdown
if request.method == 'POST':
form = ExportStudentscsv(request.POST)
if form.is_valid():
data = form.cleaned_data
#get course from dropdown value
course = data.get('course')
# find course id based on course title
courseid = Course.objects.get(title=course)
#find groups using course id
groups = Groups.objects.filter(course=courseid)
desiredintake = data.get('desiredintake')
intakeyear = data.get('intakeyear')
user_resource = UserResource()
queryset = User.objects.filter(desiredintake=desiredintake, intakeyear=intakeyear, role=4)
if not queryset:
return page_not_found(request, "Bad Request")
dataset = user_resource.export(queryset)
dataset.xls
response = HttpResponse(dataset.xls, content_type='application/vnd.ms-excel')
response['Content-Disposition'] = 'attachment; filename="students.xls"'
workbook = xlsxwriter.Workbook(response, {'in_memory': True})
worksheet = workbook.add_worksheet('Groups')
worksheet.data_validation('B11', {'validate': 'list',
'source': ['open', 'high', 'close']})
workbook.close()
response['content_type'] = 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
response['Content-Disposition'] = 'attachment; filename=students.xls'
return response
else:
args = {'form': form}
return render(request, 'epitaadmin/export_studentscsv.html', args)
我遵循了这篇文章第三个答案中给出的方法,但没有运气。我没有在这里进行数据验证更改-
workbook = xlsxwriter.Workbook(response, {'in_memory': True})
worksheet = workbook.add_worksheet('Groups')
worksheet.data_validation('B11', {'validate': 'list',
'source': ['open', 'high', 'close']})
workbook.close()
即,我试图创建的下拉列表没有反映在我下载的students.xls文件中
在同一篇文章的第二个答案中,作者给出了一个创建新工作簿并使用BytesIO下载更改的示例。我想知道是否可以将这种方法用于使用BytesIO的现有工作簿
我也尝试过使用OpenPyXl库来完成这项任务,因为结果也不太可能。我在这里找到了一篇使用OpenPyXl的文章,我发现了一件有趣的事情
from openpyxl.writer.excel import save_virtual_workbook
我想知道有没有类似的东西,比如为xlsxwriter库保存虚拟工作簿,这样我就可以像
response = HttpResponse(content=save_virtual_workbook(workbook), mimetype='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
有人能帮我解决这个问题吗?我想应该是response['Content-Type',而不是response['Content\u-Type']
编辑:
以下是对我有效的方法
from xlwt import Workbook
def render_excel_report(request):
if request.GET:
input_form = ReportInputForm(request.GET)
if input_form.is_valid():
wb = Workbook()
...
# Create a response object
response = HttpResponse(mimetype='application/vnd.ms-excel')
response['Content-Disposition'] = '''attachment; filename="download.xls"'''
# Save the workbook to response object
wb.save(response)
# Return the response object
return response
else:
...
注意:我使用的是XLWT,我想应该是response['Content-Type',而不是response['Content\u-Type']
编辑:
以下是对我有效的方法
from xlwt import Workbook
def render_excel_report(request):
if request.GET:
input_form = ReportInputForm(request.GET)
if input_form.is_valid():
wb = Workbook()
...
# Create a response object
response = HttpResponse(mimetype='application/vnd.ms-excel')
response['Content-Disposition'] = '''attachment; filename="download.xls"'''
# Save the workbook to response object
wb.save(response)
# Return the response object
return response
else:
...
注意:我正在使用XLWT使用BytesIO和sheetwork.writer来实例化现有的查询集,下面的代码应该可以工作,并提供到excel文件的下拉列表
if request.method == 'POST':
form = ExportStudentscsv(request.POST)
if form.is_valid():
data = form.cleaned_data
#get course from dropdown value
course = data.get('course')
# find course id based on course title
courseid = Course.objects.get(title=course)
#find groups using course id
groups = Groups.objects.filter(course=courseid)
groupnames = []
for group in groups:
groupnames.append(group.name)
desiredintake = data.get('desiredintake')
intakeyear = data.get('intakeyear')
user_resource = UserResource()
queryset = User.objects.filter(desiredintake=desiredintake, intakeyear=intakeyear, role=4)
if not queryset:
return page_not_found(request, "Bad Request")
output = io.BytesIO()
workbook = xlsxwriter.Workbook(output, {'in_memory': True})
worksheet = workbook.add_worksheet()
worksheet.write('A1', 'Username')
worksheet.write('B1', 'Firstname')
worksheet.write('C1', 'Lastname')
worksheet.write('D1', 'Desiredintake')
worksheet.write('E1', 'Intakeyear')
worksheet.write('F1', 'StudentId')
worksheet.write('G1', 'Course')
worksheet.write('H1', 'CourseId')
worksheet.write('I1', 'Groups')
i = 2
for obj in queryset:
worksheet.write('A'+str(i), obj.username)
worksheet.write('B'+str(i), obj.first_name)
worksheet.write('C'+str(i), obj.last_name)
worksheet.write('D'+str(i), str(obj.desiredintake))
worksheet.write('E'+str(i), obj.intakeyear)
worksheet.write('F'+str(i), obj.id)
worksheet.write('G'+str(i), str(course))
worksheet.write('H'+str(i), str(courseid.id))
txt = 'Select a value from a drop down list'
worksheet.write('I'+str(i), txt)
worksheet.data_validation('I'+str(i), {'validate': 'list',
'source': groupnames})
i += 1
# Close the workbook before sending the data.
workbook.close()
# Rewind the buffer.
output.seek(0)
# Set up the Http response.
# filename = 'students.xlsx'
response = HttpResponse(
output,
content_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
)
# response['Content-Disposition'] = 'attachment; filename=%s' % filename
response['Content-Disposition'] = 'attachment; filename="students.xlsx"'
return response
else:
args = {'form': form}
return render(request, 'epitaadmin/export_studentscsv.html', args)
使用BytesIO和sheetwork.writer可以实例化现有的查询集,下面的代码应该可以工作,并提供到excel文件的下拉列表
if request.method == 'POST':
form = ExportStudentscsv(request.POST)
if form.is_valid():
data = form.cleaned_data
#get course from dropdown value
course = data.get('course')
# find course id based on course title
courseid = Course.objects.get(title=course)
#find groups using course id
groups = Groups.objects.filter(course=courseid)
groupnames = []
for group in groups:
groupnames.append(group.name)
desiredintake = data.get('desiredintake')
intakeyear = data.get('intakeyear')
user_resource = UserResource()
queryset = User.objects.filter(desiredintake=desiredintake, intakeyear=intakeyear, role=4)
if not queryset:
return page_not_found(request, "Bad Request")
output = io.BytesIO()
workbook = xlsxwriter.Workbook(output, {'in_memory': True})
worksheet = workbook.add_worksheet()
worksheet.write('A1', 'Username')
worksheet.write('B1', 'Firstname')
worksheet.write('C1', 'Lastname')
worksheet.write('D1', 'Desiredintake')
worksheet.write('E1', 'Intakeyear')
worksheet.write('F1', 'StudentId')
worksheet.write('G1', 'Course')
worksheet.write('H1', 'CourseId')
worksheet.write('I1', 'Groups')
i = 2
for obj in queryset:
worksheet.write('A'+str(i), obj.username)
worksheet.write('B'+str(i), obj.first_name)
worksheet.write('C'+str(i), obj.last_name)
worksheet.write('D'+str(i), str(obj.desiredintake))
worksheet.write('E'+str(i), obj.intakeyear)
worksheet.write('F'+str(i), obj.id)
worksheet.write('G'+str(i), str(course))
worksheet.write('H'+str(i), str(courseid.id))
txt = 'Select a value from a drop down list'
worksheet.write('I'+str(i), txt)
worksheet.data_validation('I'+str(i), {'validate': 'list',
'source': groupnames})
i += 1
# Close the workbook before sending the data.
workbook.close()
# Rewind the buffer.
output.seek(0)
# Set up the Http response.
# filename = 'students.xlsx'
response = HttpResponse(
output,
content_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
)
# response['Content-Disposition'] = 'attachment; filename=%s' % filename
response['Content-Disposition'] = 'attachment; filename="students.xlsx"'
return response
else:
args = {'form': form}
return render(request, 'epitaadmin/export_studentscsv.html', args)
不推荐使用“保存虚拟”工作簿
您应该将python的tempfile.NamedTempFile类与BytesIO一起使用
Python管理NamedTemporaryFile文件的自动清理
阅读:文件
不推荐使用“保存虚拟”工作簿
您应该将python的tempfile.NamedTempFile类与BytesIO一起使用
Python管理NamedTemporaryFile文件的自动清理
阅读:文档您没有将工作簿编写给销售代表。那么我应该如何下载它?您没有将工作簿编写给销售代表。那么我应该如何下载它?谢谢编辑后的答案。。但是,我想知道XLWT工作簿是否像在xlsxwriter工作簿=xlsxwriter.Workbookresponse中那样接受响应,{'in_memory':True}是否可以使用XLWT添加数据验证类型列表?如果是,你能给我举个例子吗。我找不到XLWT的任何适当文档。谢谢编辑后的答案。。但是,我想知道XLWT工作簿是否像在xlsxwriter工作簿=xlsxwriter.Workbookresponse中那样接受响应,{'in_memory':True}是否可以使用XLWT添加数据验证类型列表?如果是,你能给我举个例子吗。我找不到XLWT的任何适当文档