9 lines
480 B
Ruby
9 lines
480 B
Ruby
class DataPoint < ActiveRecord::Base
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belongs_to :statistic
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def self.users_with_posts_on_day(time, number)
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sql = ActiveRecord::Base.connection()
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value = sql.execute("SELECT COUNT(*) FROM (SELECT COUNT(*) AS post_sum, author_id FROM posts WHERE created_at >= '#{(time - 1.days).utc.to_datetime}' AND created_at <= '#{time.utc.to_datetime}' GROUP BY author_id) AS t1 WHERE t1.post_sum = #{number};").first[0]
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self.new(:key => number.to_s, :value => value)
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end
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end
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