如何用Ruby on Rails建模用户最爱的长尾模型?
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本文共计322个文字,预计阅读时间需要2分钟。
我将使用StackOverflow作为我的示例。假设我有一个问题模型。登录用户可以标记问题作为他们最喜欢的之一。在数据库中,这类事件可能存储在UserQuestions表中,其中包含user_id字段和q字段。
class MyFavoriteQuestionsController < ApplicationController def index #list just the questions associated with current_user end def add #insert a row in the database for current_user and selected question def def remove #remove the row from the database end end 如果你坚持惯例,我会说这是典型的问题.添加是创建,删除是销毁.
class FavouritesController < ApplicationController before_filter :find_user def index @favourites = @user.favourites end def create @question = Question.find params[:id] @user.favourites << @question def def destroy @favourite = @user.favourites.find_by_question_id params[:id] @favourite.destroy unless @favourite.blank? end end #routes.rb resources :users do resources :favourites, :only => [:index, :create, :destroy] end #user.rb has_many :user_favourites, :dependent => :destroy has_many :favourites, :through => :user_favourites, :source => :question
本文共计322个文字,预计阅读时间需要2分钟。
我将使用StackOverflow作为我的示例。假设我有一个问题模型。登录用户可以标记问题作为他们最喜欢的之一。在数据库中,这类事件可能存储在UserQuestions表中,其中包含user_id字段和q字段。
class MyFavoriteQuestionsController < ApplicationController def index #list just the questions associated with current_user end def add #insert a row in the database for current_user and selected question def def remove #remove the row from the database end end 如果你坚持惯例,我会说这是典型的问题.添加是创建,删除是销毁.
class FavouritesController < ApplicationController before_filter :find_user def index @favourites = @user.favourites end def create @question = Question.find params[:id] @user.favourites << @question def def destroy @favourite = @user.favourites.find_by_question_id params[:id] @favourite.destroy unless @favourite.blank? end end #routes.rb resources :users do resources :favourites, :only => [:index, :create, :destroy] end #user.rb has_many :user_favourites, :dependent => :destroy has_many :favourites, :through => :user_favourites, :source => :question

