mysql - Rails & JBuilder - DECIMAL(10,2) 输出为字符串的数据类型

Question

我在使用继承的 Rails 应用程序时遇到问题，而且我没有 Rails 经验。它使用 JBuilder 从 MySQL 数据库返回 JSON 响应。我更新了应用程序，向数据库添加了几个新列，类型为 DECIMAL(10,2) 。问题是，当我请求 JSON 时，该值以字符串形式返回。如果我使用 DECIMAL(10,0)然后它作为数字返回。有没有办法强制 JBuilder 返回一个数字？相关参数为以下示例中的game_score。

Controller 的相关部分:

  # GET /game
  # GET /game.json
  def index
    if params[:since]
      since_datetime = Time.parse(params[:since])
      @game = current_user.game.where(["updated_at >= ? and deleted is not true",  since_datetime])
    else
      @game = current_user.game.where('deleted is not true')
    end

  end

index.json.jbuilder 文件:

json.array!(@game) do |game|
   json.extract! game, :id, :game_date, :game_score, :game_location, :game_team, :game_referee
   json.url game_url(game, format: :json)
end

当 MySQL 数据类型为 DECIMAL(10,2) 时为 JSON :

[{"id":4814,"game_date":"2014-09-10T15:51:00.000Z","game_score":"1.55","game_location":null,"game_team":"Team 1","game_referee":null, "url":"http://[ip]/game/4814.json"}]

当 MySQL 数据类型为 DECIMAL(10,0) 时为 JSON :

[{"id":4814,"game_date":"2014-09-10T15:51:00.000Z","game_score":1,"game_location":null,"game_team":"Team 1","game_referee":null, "url":"http://[ip]/game/4814.json"}]

Answer 1

最简单的方法是手动编写此字段，例如:

json.game_score game.game_score.to_f