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ca0407a133
* Subclass MultipleChoiceField to serialize to list * Rename pretix.api.serializers.MultipleChoiceField to ListMultipleChoiceField * Keep order in ListMultipleChoiceField
30 lines
931 B
Python
30 lines
931 B
Python
from collections import OrderedDict
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from rest_framework import serializers
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def remove_duplicates_from_list(data):
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return list(OrderedDict.fromkeys(data))
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class ListMultipleChoiceField(serializers.MultipleChoiceField):
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def to_internal_value(self, data):
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if isinstance(data, str) or not hasattr(data, '__iter__'):
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self.fail('not_a_list', input_type=type(data).__name__)
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if not self.allow_empty and len(data) == 0:
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self.fail('empty')
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internal_value_data = [
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super(serializers.MultipleChoiceField, self).to_internal_value(item)
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for item in data
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]
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return remove_duplicates_from_list(internal_value_data)
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def to_representation(self, value):
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representation_data = [
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self.choice_strings_to_values.get(str(item), item) for item in value
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]
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return remove_duplicates_from_list(representation_data)
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