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我试图了解如何将我的@venues 变量传递到“merit_scores_override.rb”并使用 SQL 根据与该季节相关的场地进行分类。因此，当排行榜的参数为“since_date”时，它会占用该赛季的所有场地并将这些积分相加。

目前，即使本赛季只有 2 个相关的场馆，它也会累加所有场馆的积分。

http://i62.tinypic.com/fjoxtc.png

http://i62.tinypic.com/mmstn9.png

第一个图像应该是 0，因为这些场所没有与之关联的点。

静态页面#排行榜

def leaderboard
@seasons = Season.all
@season = Season.find_all_by_start(params[:since_date])

if(params.has_key?(:since_date))
  @venues = Season.find_by_start(params[:since_date]).venues
else
  @venues = Venue.all
end

    since_date = params[:since_date]
    end_date = params[:end_date]
category = params[:category]

if since_date.blank? && end_date.blank? && category.blank?
    @scores = Merit::Score.top_scored
elsif since_date.blank? && end_date.blank?
  @scores = Merit::Score.top_scored(category: category)
elsif category.blank?
  @scores = Merit::Score.top_scored(since_date: since_date, end_date: end_date, venues: @venues)
else
    @scores = Merit::Score.top_scored(since_date: since_date, end_date: end_date, category: category, venues: @venues)
end

end

优点分数覆盖.rb

def self.top_scored(options = {})
  options[:table_name] ||= :users
  options[:since_date] ||= 10.years.ago
  options[:end_date] ||=  1.month.from_now
  options[:category] ||=  nil
  options[:limit]      ||= 25
  #options[:venues] ||=  nil


  alias_id_column = "#{options[:table_name].to_s.singularize}_id"
  if options[:table_name] == :sashes
    sash_id_column = "#{options[:table_name]}.id"
  else
    sash_id_column = "#{options[:table_name]}.sash_id"
  end

  # MeritableModel - Sash -< Scores -< ScorePoints
  sql_query = "SELECT
                #{options[:table_name]}.id AS #{alias_id_column},
                SUM(num_points) as sum_points
              FROM #{options[:table_name]}
                LEFT JOIN merit_scores ON merit_scores.sash_id = #{sash_id_column}
                LEFT JOIN merit_score_points ON merit_score_points.score_id = merit_scores.id
              WHERE merit_score_points.created_at > '#{options[:since_date]}' AND merit_score_points.created_at < '#{options[:end_date]}' "

  if(options[:category] != nil)
      sql_query += "AND merit_scores.category = \"#{options[:category]}\" "
  #else
   # options[:venues].each do |venue|
   #   sql_query += "AND merit_scores.category = \"#{venue.name}\" "
   # end
  end

  sql_query += "GROUP BY #{options[:table_name]}.id, merit_scores.sash_id
                ORDER BY sum_points DESC
                LIMIT #{options[:limit]} "

  results = ActiveRecord::Base.connection.execute(sql_query)
  results.map do |h|
    h.keep_if { |k, v| (k == alias_id_column) || (k == 'sum_points') }
  end
  results
end

对 Ruby on Rails 来说仍然很新，任何东西都有帮助。非常感谢您的时间，并希望这已得到彻底解释。注释掉的代码不起作用，但让您了解我正在尝试做什么。

4

1 回答 1

0

在接下来的几天里，我每次都设法回答我自己的问题。我最终使用这些 if 语句仅在该季节内抢占场地或做单个场地。

  if(options[:category] != nil)
    sql_query += "AND merit_scores.category = \"#{options[:category]}\" "
  elsif(options[:venues] != nil)
    sql_venues = Array.new
    sql_query += "AND ("
    options[:venues].each do |venue|
      sql_venues.push("merit_scores.category = \"#{venue.name}\"")
    end
    sql_query += sql_venues.join(" OR ")
    sql_query += ") \n"
  end
于 2014-06-10T18:54:21.087 回答