34 lines
No EOL
1 KiB
Python
34 lines
No EOL
1 KiB
Python
class InlineSet(object):
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def __init__(self, obj, field, delimiter):
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self.obj = obj
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self.field = field
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self.data = set([x for x in getattr(obj, field).split(delimiter) if x])
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self.delimiter = delimiter
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def __iter__(self):
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return iter(self.queryset())
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def __len__(self):
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return self.queryset().count()
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def queryset(self):
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return self.obj.__class__._default_manager.filter(pk__in=self.data)
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def add(self, obj, commit=True):
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"""
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Add given room to the set, but check if it can exist
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before adding it.
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"""
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self.data.add(obj.pk)
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self._update_model(commit=commit)
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def remove(self, obj, commit=True):
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self.data.remove(obj.pk)
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self._update_model(commit=commit)
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def _update_model(self, commit=True):
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value = self.delimiter.join([str(x) for x in self.data])
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setattr(self.obj, self.field, value)
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if commit:
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self.obj.save(force_update=True) |