docbow/docbow_project/actions.py

30 lines
1.2 KiB
Python

import csv
from django.core.exceptions import PermissionDenied
from django.http import HttpResponse
from django.utils.translation import ugettext as _
def export_as_csv(modeladmin, request, queryset):
"""
Generic csv export admin action.
"""
if not request.user.is_staff:
raise PermissionDenied
opts = modeladmin.model._meta
response = HttpResponse(mimetype='text/csv')
response['Content-Disposition'] = 'attachment; filename=%s.csv' % unicode(opts).replace('.', '_')
writer = csv.writer(response)
field_names = [field.name for field in opts.fields]
m2m_field_names = [m2m_field.name for m2m_field in opts.many_to_many]
# Write a first row with header information
writer.writerow(field_names+m2m_field_names)
# Write data rows
for obj in queryset:
values = [ unicode(getattr(obj, field)) for field in field_names]
for m2m_field in m2m_field_names:
value = getattr(obj, m2m_field)
value = u','.join(map(unicode, value.all()))
values.append(unicode(value))
writer.writerow(map(lambda x: unicode.encode(x, 'utf8'), values))
return response
export_as_csv.short_description = _("Export selected objects as csv file")