20 lines
795 B
Python
20 lines
795 B
Python
from django.forms.utils import flatatt
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from django.forms.widgets import Widget
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from django.utils.safestring import mark_safe
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class TriStateCheckbox(Widget):
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def __init__(self, attrs=None, choices=()):
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super().__init__(attrs)
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# choices can be any iterable, but we may need to render this widget
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# multiple times. Thus, collapse it into a list so it can be consumed
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# more than once.
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self.choices = list(choices)
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def render(self, name, value, attrs=None, choices=(), renderer=None):
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if value is None:
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value = "none"
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attrs["value"] = value
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final_attrs = self.build_attrs(self.attrs, attrs)
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output = ['<span class="tristate"%s></span>' % flatatt(final_attrs)]
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return mark_safe("\n".join(output))
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