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3f6d1a583e
The methods are still experimental and might change without notice!
You need to add `include DateGroupable` to your model before you can use it like this:
`User.smart_group_by_date("users.created_at", start_date, end_date)`.count
49 lines
1.2 KiB
Ruby
49 lines
1.2 KiB
Ruby
module DateGroupable extend ActiveSupport::Concern
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class_methods do
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def group_by_day(column)
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group_by_unit(:day, column)
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end
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def group_by_week(column)
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group_by_unit(:week, column)
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end
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def group_by_month(column)
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group_by_unit(:month, column)
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end
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def group_by_quarter(column)
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group_by_unit(:quarter, column)
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end
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def group_by_year(column)
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group_by_unit(:year, column)
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end
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def group_by_unit(aggregation_unit, column)
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group("date_trunc('#{aggregation_unit}', #{column})")
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.order("date_trunc('#{aggregation_unit}', #{column})")
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end
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def smart_group_by_date(column, start_date, end_date)
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days = (start_date.to_date..end_date.to_date).count
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case
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when days <= 40
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aggregation_unit = :day
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when days <= 210 # 30 weeks
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aggregation_unit = :week
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when days <= 550 # ~18 months
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aggregation_unit = :month
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when days <= 1461 # ~4 years
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aggregation_unit = :quarter
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else
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aggregation_unit = :year
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end
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where("#{column} BETWEEN ? AND ?", start_date, end_date)
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.group_by_unit(aggregation_unit, column)
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end
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end
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end
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