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Add in quick Query internals explanation
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Ralph Cowling committed Jan 29, 2014
1 parent ddd704c commit f50062b
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6 changes: 5 additions & 1 deletion backdrop/read/query.py
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Expand Up @@ -55,7 +55,11 @@ def parse_filter_by(filter_by):

return args


"""
This is the internal Query object
- Create list of attributes to build the query from
- We use delta interally, but the end user will use 'duration'
"""
_Query = namedtuple(
'_Query',
['start_at', 'end_at', 'delta', 'period',
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1 comment on commit f50062b

@robyoung
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Do we need to give a bit of an explanation of the difference between delta and duration?

The delta describes the duration and the direction of movement (ie. whether we're going back in time or forward in time). This is important for knowing which direction to slide the window when we move the relative date.

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