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