17 lines
435 B
Python
17 lines
435 B
Python
from flask_admin.babel import gettext
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from wtforms.validators import StopValidation
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class FieldListInputRequired(object):
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"""
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Validates that at least one item was provided for a FieldList
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"""
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field_flags = ('required',)
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def __call__(self, form, field):
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if len(field.entries) == 0:
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field.errors[:] = []
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raise StopValidation(gettext('This field requires at least one item.'))
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