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23 lines
702 B
Python
23 lines
702 B
Python
from django.core import validators
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from django.core.exceptions import ValidationError
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from django.forms.widgets import Textarea
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EMPTY_VALUES = validators.EMPTY_VALUES + ('[]',)
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class CSVWidget(Textarea):
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is_hidden = False
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def prep_value(self, value):
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"""Prepare value before effectively render widget"""
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if value in EMPTY_VALUES:
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return ""
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elif isinstance(value, str):
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return value
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elif isinstance(value, list):
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return ";".join(value)
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raise ValidationError('Invalid format.')
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def render(self, name, value, **kwargs):
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value = self.prep_value(value)
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return super().render(name, value, **kwargs)
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