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mastodon
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mastodon/app/lib/admin/metrics/measure/new_users_measure.rb

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# frozen_string_literal: true
class Admin::Metrics::Measure::NewUsersMeasure < Admin::Metrics::Measure::BaseMeasure
include Admin::Metrics::Measure::QueryHelper
def key
'new_users'
end
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protected
def perform_total_query
User.where(created_at: time_period).count
end
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def perform_previous_total_query
User.where(created_at: previous_time_period).count
end
def sql_array
[sql_query_string, { start_at: @start_at, end_at: @end_at }]
end
def sql_query_string
<<~SQL.squish
SELECT axis.*, (
WITH new_users AS (
SELECT users.id
FROM users
WHERE date_trunc('day', users.created_at)::date = axis.period
)
SELECT count(*) FROM new_users
) AS value
FROM (
SELECT generate_series(date_trunc('day', :start_at::timestamp)::date, date_trunc('day', :end_at::timestamp)::date, interval '1 day') AS period
) AS axis
SQL
end
end