22 lines
768 B
Python
22 lines
768 B
Python
from django.db.models import DecimalField, DurationField, Func
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class IntervalToSeconds(Func):
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function = ''
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template = """
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EXTRACT(day from %(expressions)s) * 86400 +
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EXTRACT(hour from %(expressions)s) * 3600 +
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EXTRACT(minute from %(expressions)s) * 60 +
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EXTRACT(second from %(expressions)s)
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"""
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def __init__(self, expression, *, output_field=None, **extra):
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super().__init__(expression, output_field=output_field or DecimalField(), **extra)
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class SecondsToInterval(Func):
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function = 'NUMTODSINTERVAL'
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template = "%(function)s(%(expressions)s, 'SECOND')"
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def __init__(self, expression, *, output_field=None, **extra):
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super().__init__(expression, output_field=output_field or DurationField(), **extra)
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