Question

在我的rails应用程序中，我有一个upvote系统，它允许人们upvote pin。然后，当用户对引脚进行投票时，我会在用户配置文件中呈现一个upvoted引脚列表。我想知道的是提供一个赞成特定图钉的用户列表。

应用程序/控制器/ pins_controller.rb

def upvote
  @pin = Pin.find(params[:id])

  if @pin.votes.create(user_id: current_user.id)
    flash[:notice] =  "Thank you for upvoting! You can upvote a startup only once."
    redirect_to(pins_path)
  else 
    flash[:notice] =  "You have already upvoted this!"
    redirect_to(pins_path)
  end
end

应用程序/控制器/ users_controller.rb

def show
    @user = User.find(params[:id])
    @pins_for_user = [] 
    @user.votes.each do |vote| 
    @pins_for_user << vote.pin    
    end
end

应用程序/模型/ pin.rb

class Pin < ActiveRecord::Base

    belongs_to :user

    has_many :votes, dependent: :destroy
    has_many :upvoted_users, through: :votes, source: :user

    has_many :rewards, dependent: :destroy
    has_many :rewarded_users, through: :rewards, source: :user

    has_attached_file :image, :styles => { :medium => "300x300>", :thumb => "100x100>" }
    has_attached_file :logo, :styles => { :medium => "300x300>", :thumb => "100x100>" }

    end

应用程序/模型/ user.rb

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

  has_many :pins    
  has_many :votes, dependent: :destroy
  has_many :upvoted_pins, through: :votes, source: :pin

  has_many :rewards, dependent: :destroy
  has_many :rewarded_pins, through: :rewards, source: :pin

end

app / models / vote.rb

class Vote < ActiveRecord::Base

belongs_to :user
belongs_to :pin, counter_cache: true
validates_uniqueness_of :pin_id, scope: :user_id

end

我在考虑使用@ pin.upvoted_users来提供这个列表，但我没有成功地实现它，任何想法？

Rails：upvoted的用户列表

0 个答案: