Question

我是rails的新手，但是在我跟着michael hartl rails之后，我想知道如何查看你关注的人的帖子？

用户模型

 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 :posts, dependent: :destroy
    has_many :active_relationships, class_name:  "Relationship",
                                  foreign_key: "follower_id",
                                  dependent:   :destroy
    has_many :passive_relationships, class_name:  "Relationship",
                                   foreign_key: "followed_id",
                                   dependent:   :destroy

    has_many :following, through: :active_relationships, source: :followed
    has_many :followers, through: :passive_relationships, source: :follower


  def feed
    following_ids = "SELECT followed_id FROM relationships
                     WHERE  follower_id = :user_id"
    Post.where("user_id IN (#{following_ids})
                     OR user_id = :user_id", user_id: id)   end
    def follow(other)
    active_relationships.create(followed_id: other.id)   end   def unfollow(other)
    active_relationships.find_by(followed_id: other.id).destroy   end   def following?(other)
     following.include?(other)    end

关系控制器

class RelationshipsController < ApplicationController

    before_filter :authenticate_user!

 def create
    user = User.find(params[:followed_id])
    current_user.follow(user)
    respond_to do |format|
      format.html { redirect_to :back }
      format.js
    end      

  end

  def destroy
    user = Relationship.find(params[:id]).followed
    current_user.unfollow(user)
    respond_to do |format|
    format.html { redirect_to :back }
    format.js
  end 


  end

    end

关系模型

class Relationship < ActiveRecord::Base
     belongs_to :follower, class_name: "User"
  belongs_to :followed, class_name: "User"
validates :follower_id, presence: true
  validates :followed_id, presence: true
end

所以我希望代码是什么？我试过current_user.followed_id.posts但是没有工作......

Answer 1

我相信你已经在代码中找到了答案。

User#feed方法可以让您这样做：

user = User.first
user.feed # => [<posts from the users that you follow>]

如何为您关注的人显示帖子？

1 个答案: