agenda-libre-ruby/app/controllers/stats_controller.rb

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# Generate statistics, around events, by date or place
class StatsController < ApplicationController
before_action :set_temporal, :set_local, only: [:index]
private
def set_temporal
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@years = Event.group(year_grouping).count
@months = Event.group(year_grouping, month_grouping).count
end
def set_local
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@regions = Event.joins(:region).group(:region_id, year_grouping).count
@city_events = Event.group(:city).having('count(city) > 3')
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.order('count(city) desc').count
end
def year_grouping
if %w[Mysql2 MySQL PostgreSQL].include? Event.connection.adapter_name
'extract(year from start_time)'
elsif Event.connection.adapter_name == 'SQLite'
'strftime("%Y", start_time)'
end
end
def month_grouping
if %w[Mysql2 MySQL PostgreSQL].include? Event.connection.adapter_name
'extract(month from start_time)'
elsif Event.connection.adapter_name == 'SQLite'
'strftime("%m", start_time)'
end
end
end