Base View Class for Downloading CSV in SJIS with Django
2017-05-09 17:49 (7 years ago)
ytyng
Base View Class for Downloading SJIS CSV in Django
# -*- coding: utf-8 -*-
from __future__ import unicode_literals, print_function
import csv
import io
from django.http import HttpResponse
from django.views.generic import View
class CsvExportViewBase(View):
output_as_sjis = True
def get(self, *args, **kwargs):
if self.output_as_sjis:
return self._get_response_as_sjis(*args, **kwargs)
response = HttpResponse(content_type='text/csv')
response['Content-Disposition'] = \
'attachment; filename={}'.format(self.get_filename())
writer = csv.writer(response)
for r in self.get_result_rows():
writer.writerow(r)
return response
def _get_response_as_sjis(self, *args, **kwargs):
response = HttpResponse(content_type='text/csv; charset=Shift-JIS')
response['Content-Disposition'] = \
'attachment; filename={}'.format(self.get_filename())
sio = io.StringIO()
writer = csv.writer(sio)
for r in self.get_result_rows():
writer.writerow(r)
response.write(sio.getvalue().encode(encoding='cp932'))
return response
def get_connection(self):
from django.db import connection
return connection
def get_cursor(self):
connection = self.get_connection()
return connection.cursor()
def get_sql(self):
"""
Implement required.
"""
return "SELECT NOW()"
def get_sql_args(self):
return []
def row_filter(self, row):
return row
def get_result_rows(self):
cursor = self.get_cursor()
cursor.execute(self.get_sql(), *self.get_sql_args())
# Header
yield self.row_filter(f[0] for f in cursor.description)
# Content
for r in cursor.fetchall():
yield self.row_filter(r)
def get_filename(self):
return "items.csv"
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