Tuesday, January 29, 2013
Hi!
I have a table with visits with a visited_at: attribute which is a datetime field. They seem to be stored as UTC. Now I want to count all visits each day and return something like:
{
2013-01-01: 8,
2013-01-02: 4,
2013-01-07: 9,
...
}
So, I did it like this which kind of works...:
def self.total_grouped_by_day(start_date, end_date)
visits = where(visited_at: start_date..end_date)
visits = visits.group("date(visited_at)")
visits = visits.select("date(visited_at) as date, count(visits.id) as total_visits")
visits = visits.order("date ASC")
visits.group_by { |v| v.date.to_date }
end
It doesn't return exactly the format I want but that's not the big problem. The problem is that if a visit happens near midnight it may be counted at the "wrong" date due to time zones. I understand why, because "date(visited_at)" doesn't know anything about my timezone.
Any good ideas on how to fix this issue?
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