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Option for the list flattening #83

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Option for the list flattening #83

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9842413
Only flatten dicts
BayarmagnaiB Nov 11, 2019
47d9210
Option for the list flattening
BayarmagnaiB Nov 12, 2019
28c563d
Change variable name
BayarmagnaiB Nov 12, 2019
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9 changes: 6 additions & 3 deletions rest_framework_csv/renderers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@ class CSVRenderer(BaseRenderer):
header = None
labels = None # {'<field>':'<label>'}
writer_opts = None
to_flat_list = True

def render(self, data, media_type=None, renderer_context={}, writer_opts=None):
"""
Expand Down Expand Up @@ -125,7 +126,7 @@ def flatten_data(self, data):
yield flat_item

def flatten_item(self, item):
if isinstance(item, list):
if isinstance(item, list) and self.to_flat_list:
flat_item = self.flatten_list(item)
elif isinstance(item, dict):
flat_item = self.flatten_dict(item)
Expand Down Expand Up @@ -191,7 +192,9 @@ def fdel(self):

class CSVRendererWithUnderscores (CSVRenderer):
level_sep = '_'


class CSVRendererWithList (CSVRenderer):
to_flat_list = False

class CSVStreamingRenderer(CSVRenderer):

Expand Down Expand Up @@ -240,4 +243,4 @@ class PaginatedCSVRenderer (CSVRenderer):
def render(self, data, *args, **kwargs):
if not isinstance(data, list):
data = data.get(self.results_field, [])
return super(PaginatedCSVRenderer, self).render(data, *args, **kwargs)
return super(PaginatedCSVRenderer, self).render(data, *args, **kwargs)