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我是django的新手，我非常渴望帮助上传和读取excel数据，而不实际保存数据在机器上。我写了一些代码，并从我在线完成的研究中拿了一些。将excel数据上传到django中而不保存文件
这是我的问题：
1.如何上传Excel文件（而不会被保存在机器上）。我只想让excel文件填充一些django字段并不保存它。
如何让django读取excel文件中的列并将其馈送到另一页上的其他字段。 （我如何链接它们？）
我见过的大多数文档都要求我硬编码excel文件的名称及其位置.IS有一种解决方法，因为我不知道在哪里用户可能正在上传。 请指教。
我views.py：
from django.shortcuts import render_to_response
from django.template import RequestContext
from django.http import HttpResponseRedirect
from django.core.urlresolvers import reverse
from credit.models import Document
from credit.forms import DocumentForm
def list(request):
if request.method == 'POST':
form = DocumentForm(request.POST, request.FILES)
if form.is_valid():
newdoc = Document(docfile = request.FILES['docfile'])
newdoc.save()
return HttpResponseRedirect(reverse('credit.views.list'))
else:
form = DocumentForm()
documents = Document.objects.all()
return render_to_response('credit/list.html',
{'documents': documents, 'form': form},
context_instance=RequestContext(request)
)
我的models.py是：
class Document(models.Model):
docfile = models.FileField(upload_to='documents/')
#these are the models I want the excel columns to feed into
policies = DecimalNumberField()
capital = DecimalNumberField()
inflation = DecimalNumberField()
我forms.py是：
import os
import xlrd
IMPORT_FILE_TYPES = ['.xls', ]
class DocumentForm(forms.Form):
docfile = forms.FileField(label='Select a file')
def clean(self):
data = super(DocumentForm, self).clean()
if 'docfile' not in data:
raise forms.ValidationError(_('The Excel file is required to proceed'))
docfile = data['docfile']
extension = os.path.splitext(docfile.name)[1]
if not (extension in IMPORT_FILE_TYPES):
raise forms.ValidationError(u'%s is not a valid Excel file. Please make sure your input file is an Excel file)' % docfile.name)
file_data = StringIO.StringIO()
for chunk in docfile.chunks():
file_data.write(chunk)
data['file_data'] = file_data.getvalue()
file_data.close()
try:
xlrd.open_workbook(file_contents=data['file_data'])
except xlrd.XLRDError, e:
raise forms.ValidationError(_('Unable to open XLS file: %s' % e))
return data
#i do not want to do this (specify the exact file name). Need an alternative
sh = xlrd.open_workbook('documents\june.xls').sheet_by_index(1)
inflation = open("inflation.txt", 'w')
policies= open("policies.txt", 'w')
capital= open("access_to_finance.txt", 'w')
try:
for rownum in range(sh.nrows):
inflation.write(str(rownum)+ " = " +str(sh.cell(rownum, 1).value)+"\n")
policies.write(str(rownum)+ " = " +str(sh.cell(rownum, 2).value)+"\n")
capital.write(str(rownum)+ " = " +str(sh.cell(rownum, 3).value)+"\n")
finally:
inflation.close()
policies.close()
capital.close()
然后，我有一个list.html文件：
{% if documents %}
<ul class="nav nav-tabs">
{% for document in documents %}
<li><a href="{{ document.docfile.url }}">{{ document.docfile.name }}</a></li>
{% endfor %}
</ul>
{% else %}
<p>Click Upload to go to Upload page</p>
{% endif %}
<form action="{% url list %}" method="post" enctype="multipart/form-data">
{% csrf_token %}
<p>{{ form.non_field_errors }}</p>
<p>{{ form.docfile.label_tag }} {{ form.docfile.help_text }}</p>
<p>
{{ form.docfile.errors }}
{{ form.docfile }}
</p>
<p><input type="submit" value="Upload" /></p>
</form>