如何在Rails中添加控制器？

我已經試過這

def choose 
    rand_id = rand(Gif.count) 
    @gif1 = Gif.first(:conditions => [ "id >= ?", rand_id]) 
    @gif2 = Gif.first(:conditions => [ "id >= ?", rand_id]) 
    if @gif1.id == @gif2.id 
    @gif2 = Gif.first(:order => 'Random()') 
    end 
    total = @[email protected] 
    number_one = @gif1.votes/total*100 
    number_two = @gif2.votes/total*100 
    @gif1.update_attribute(:votes, number_one) 
    @gif2.update_attribute(:votes, number_two) 
end 


class Gif < ActiveRecord::Base 
    before_save :default_agree_count 

    def default_agree_count 
    self.agree = 1 
    self.votes = 1 
    end 
    VALID_REGEX = /http:\/\/[\S]*\.gif$/ 
    attr_accessible :link, :votes, :agree 
    acts_as_votable 
    validates :link, presence: true, format: {with: VALID_REGEX}, uniqueness: {case_sensitive: false} 
end

然而，它說，+，/，*都是未知的運營商。我也嘗試過這樣做@ gif1.agree ='@ gif1.votes + 1'有和沒有'。有任何想法嗎？

謝謝！

來源

2014-03-30 user3340037

投票的數據類型是什麼？ – emaillenin

這是一個整數類型 – user3340037

什麼是確切的Ruby錯誤？ – emaillenin

我想你使用的是Acts As Votable寶石。基本上它的工作原理如下：

@post = Post.new(:name => 'my post!') 
@post.save 

@post.liked_by @user 
@post.votes.size # => 1

所以嘗試在你的代碼替換.votes.size.votes。

如：

total = @gif1.votes.size + @gif2.votes.size

來源

2014-03-30 09:42:10

繼@ilyai's答案（我+1「D）（我沒有與Acts As Votable寶石多少經驗），你可以在你的控制器

執行任何你想要的計算

下面是一些重構你：

.first

def choose 
    Gif.update_votes 
end 


class Gif < ActiveRecord::Base 
    before_save :default_agree_count 

    def default_agree_count 
    self.agree = 1 
    self.votes = 1 
    end 

    def self.update_votes 
    rand_id = rand count #-> self.count? 
    gif = where("id >= ?", rand_id) 

    gif1 = gif[0] 
    gif2 = gif[1] 

    if gif1.id == gif2.id 
     gif2 = where(order: 'Random()').first 
    end 

    total = (gif1.votes) + (gif2.votes) 

    number_one = ((gif1.votes /total) * 100) 
    number_two = ((gif2.votes/total) * 100) 

    gif1.update_attribute(:votes, number_one) 
    gif2.update_attribute(:votes, number_two) 
    end 

    VALID_REGEX = /http:\/\/[\S]*\.gif$/ 
    attr_accessible :link, :votes, :agree 
    acts_as_votable 
    validates :link, presence: true, format: {with: VALID_REGEX}, uniqueness: {case_sensitive: false} 
end

來源

2014-03-30 12:03:23

如何在Rails中添加控制器？

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