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103 lines
4.6 KiB
103 lines
4.6 KiB
# -*- coding: utf-8 -*-
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"""ExcelResponse for emencia.django.newsletter"""
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# Based on http://www.djangosnippets.org/snippets/1151/
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import datetime
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from django.http import HttpResponse
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from django.db.models.query import QuerySet
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from django.db.models.query import ValuesQuerySet
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# from ..models import ContactSettings
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from collections import OrderedDict
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from functions.translate import fill_trans_fields_r
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from theme.models import Theme
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class ExcelResponse(HttpResponse):
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"""ExcelResponse feeded by queryset"""
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def __init__(self, data, output_name='excel_data', headers=None, sheet_name = "Sheet1", default_style=None,
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force_csv=False, encoding='utf8'):
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valid_data = False
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qs = data.prefetch_related('contactsettings', 'contactsettings__theme', 'contactsettings__area')
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# if isinstance(data, ValuesQuerySet):
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# data = list(data)
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# elif isinstance(data, QuerySet):
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# data = list(data.values())
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# print(data)
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# if 'settings' in headers:
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data = []
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themes = dict(Theme.objects.language('ru').all().values_list('pk', 'name'))
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for item in qs:
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data.append([
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item.email,
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item.first_name,
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item.contactsettings.exponent_practicum,
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item.contactsettings.organiser_practicum,
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item.creation_date.strftime('%d.%m.%Y'),
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item.modification_date.strftime('%d.%m.%Y'),
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', '.join([getattr(fill_trans_fields_r(obj=x, lang='ru'), 'name', '') for x in item.contactsettings.area.all()]),
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', '.join([themes.get(x.pk) for x in item.contactsettings.theme.all()]),
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])
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headers = ('email', 'first_name', 'приактикум экспонента', 'практикум организатор', 'дата подписки', 'дата изменения', 'гео', 'темы')
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# if hasattr(data, '__getitem__'):
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# if isinstance(data[0], dict):
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# if headers is None:
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# headers = data[0].keys()
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# data = [[row[col] for col in headers] for row in data]
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data.insert(0, headers)
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# if hasattr(data[0], '__getitem__'):
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# valid_data = True
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# assert valid_data is True, "ExcelResponse requires a sequence of sequences"
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import StringIO
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output = StringIO.StringIO()
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# Excel has a limit on number of rows; if we have more than that, make a csv
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use_xls = False
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if len(data) <= 65536 and force_csv is not True:
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try:
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import xlwt
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except ImportError:
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pass
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else:
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use_xls = True
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if use_xls:
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book = xlwt.Workbook(encoding=encoding)
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sheet = book.add_sheet(sheet_name)
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styles = {'datetime': xlwt.easyxf(num_format_str='yyyy-mm-dd hh:mm:ss'),
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'date': xlwt.easyxf(num_format_str='yyyy-mm-dd'),
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'time': xlwt.easyxf(num_format_str='hh:mm:ss'),
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'default': default_style or xlwt.Style.default_style}
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for rowx, row in enumerate(data):
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for colx, value in enumerate(row):
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if isinstance(value, datetime.datetime):
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cell_style = styles['datetime']
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elif isinstance(value, datetime.date):
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cell_style = styles['date']
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elif isinstance(value, datetime.time):
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cell_style = styles['time']
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else:
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cell_style = styles['default']
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sheet.write(rowx, colx, value, style=cell_style)
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book.save(output)
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mimetype = 'application/vnd.ms-excel'
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file_ext = 'xls'
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else:
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for row in data:
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out_row = []
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for value in row:
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if not isinstance(value, basestring):
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value = unicode(value)
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value = value.encode(encoding)
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out_row.append(value.replace('"', '""'))
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output.write('"%s"\n' %
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'","'.join(out_row))
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mimetype = 'text/csv'
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file_ext = 'csv'
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output.seek(0)
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super(ExcelResponse, self).__init__(content=output.getvalue(),
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mimetype=mimetype)
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self['Content-Disposition'] = 'attachment;filename="%s.%s"' % \
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(output_name.replace('"', '\"')[:27], file_ext)
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