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jumpserver/apps/common/renders/csv.py

81 lines
2.6 KiB

# ~*~ coding: utf-8 ~*~
#
import unicodecsv
import codecs
from datetime import datetime
from six import BytesIO
from rest_framework.renderers import BaseRenderer
from rest_framework.utils import encoders, json
from ..utils import get_logger
logger = get_logger(__file__)
class JMSCSVRender(BaseRenderer):
media_type = 'text/csv'
format = 'csv'
@staticmethod
def _get_show_fields(fields, template):
if template in ('import', 'update'):
return [v for k, v in fields.items() if not v.read_only and k != "org_id"]
else:
return [v for k, v in fields.items() if not v.write_only and k != "org_id"]
@staticmethod
def _gen_table(data, fields):
yield ['*{}'.format(f.label) if f.required else f.label for f in fields]
for item in data:
row = [item.get(f.field_name) for f in fields]
yield row
def set_response_disposition(self, serializer, context):
response = context.get('response')
if response and hasattr(serializer, 'Meta') and \
hasattr(serializer.Meta, "model"):
model_name = serializer.Meta.model.__name__.lower()
now = datetime.now().strftime("%Y-%m-%d_%H-%M-%S")
filename = "{}_{}.csv".format(model_name, now)
disposition = 'attachment; filename="{}"'.format(filename)
response['Content-Disposition'] = disposition
def render(self, data, media_type=None, renderer_context=None):
renderer_context = renderer_context or {}
request = renderer_context['request']
template = request.query_params.get('template', 'export')
view = renderer_context['view']
if isinstance(data, dict):
data = data.get("results", [])
if template == 'import':
data = [data[0]] if data else data
data = json.loads(json.dumps(data, cls=encoders.JSONEncoder))
try:
serializer = view.get_serializer()
self.set_response_disposition(serializer, renderer_context)
except Exception as e:
logger.debug(e, exc_info=True)
value = 'The resource not support export!'.encode('utf-8')
else:
fields = serializer.fields
show_fields = self._get_show_fields(fields, template)
table = self._gen_table(data, show_fields)
csv_buffer = BytesIO()
csv_buffer.write(codecs.BOM_UTF8)
csv_writer = unicodecsv.writer(csv_buffer, encoding='utf-8')
for row in table:
csv_writer.writerow(row)
value = csv_buffer.getvalue()
return value