Rails帮助验证数字

Question

我想验证提交的表单。发送的参数名称是ratings。该参数保存在rating_score列中。

我想验证参数评级仅在1到5之间。

我把这个放在我的模型中:Validates_inclusion_of:rating_score，:in => 1..5

之后，我提交了参数为ratings = 6的表单，它被保存在我的数据库中。

我的控制器:

  def rate
    @konkurrancer = Konkurrancer.find(params[:id])
    @konkurrancer.rating_score ||= 0
    @container = "Konkurrancer"[e-mail]_s
    @konkurrancer.rating_score += params[:vind][:ratings].to_i
    @konkurrancer.ratings += 1
    @konkurrancer.save
    respond_to do |format|
      format.js
    end
  end

我的模型:

class Konkurrancer < ActiveRecord::Base
attr_accessible :rating_score
validates_inclusion_of :rating_score, :in => 1..5
end

我提交表单时的日志:

Started POST "/konkurrancers/rate/7" for 127.0.0.1 at 2011-05-03 23:23:53 +0200
  Processing by KonkurrancersController#rate as */*
  Parameters: {"utf8"=>"Ô£ô", "authenticity_token"=>"h6RSZbuVVfYIvdNb31xS6Oo7Q8o
1JxvVL24aoJ2GQ/o=", "vind"=>{"ratings"=>"6"}, "id"=>"7"}
Completed 200 OK in 488ms (Views: 239.0ms | ActiveRecord: 20.0ms)

如何进行验证?

Answer 1

尝试使用validates_numericality_of

validates_numericality_of :ratings , :less_than_or_equal_to=>5, :greater_than_or_equal_to=>1

Answer 2

尝试在渲染视图之前保存它。看起来你的对象没有保存，但是你的rating_score是脏的，等于6。

  def rate
    @konkurrancer = Konkurrancer.find(params[:id])
    @konkurrancer.rating_score ||= 0
    @container = "Konkurrancer"[e-mail]_s
    @konkurrancer.rating_score += params[:vind][:ratings].to_i
    @konkurrancer.ratings += 1
    if @konkurrancer.save
      respond_to do |format|
        format.js
      end
    end
  end

旧

你验证的是rating_score而不是raitings

所以如果你设置了ratings = 6，它将被保存。

但是如果你设置rating_score = 6，它将不会被保存，因为你的验证是正确的。

试试这个

class Konkurrancer < ActiveRecord::Base
  attr_accessible :rating_score
  validates_inclusion_of :rating_score, :in => 1..5
end

或

class Konkurrancer < ActiveRecord::Base
  attr_accessible :rating_score
  validates :rating_score, :inclusion => { :in => 1..5 }
end