所有，我目前正在学习Rails并继续进行项目，我遇到了一个问题 . 我无法显示帖子所属的用户的图像 .

当我进入主页时，我应该看到你正在关注的用户的帖子...不幸的是我不知道我怎么能显示帖子所属的用户的形象....我可以展示他们的发布但不确定我如何展示他们的形象 . 我必须说我正在使用paperclip gem .

用户模型

class User < ActiveRecord::Base

＃包括默认设计模块 . 其他可用的是：＃：confirmmable，：lockable，：timeoutable和：omniauthable devise：database_authenticatable，：registerable，：recoverable，：rememberable，：trackable，：validatable has_attached_file：avatar，：styles => {：medium =>“300x300> “，：thumb =>”100x100＃“} ,: default_url =>”/ images /：style / missing.png“validates_attachment_content_type：avatar，：content_type => /\Aimage/.*\Z/

has_many :followeds, through: :relationships
      has_many :relationships, foreign_key: "follower_id", dependent: :destroy
     has_many :followed_users, through: :relationships, source: :followed
     has_many :reverse_relationships, foreign_key: "followed_id"
     has_many :reverse_relationships, foreign_key: "followed_id",
                               class_name:  "Relationship",
                               dependent:   :destroy
     has_many :followers, through: :reverse_relationships, source: :follower


     has_many:avatar, dependent: :destroy
     has_many :posts, dependent: :destroy # remove a user's posts if his account is deleted.
     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 avatar_url
    avatar.url(:medium)
    end

     # helper methods

     # follow another user
     def follow(other)
       active_relationships.create(followed_id: other.id)
     end

     # unfollow a user
     def unfollow(other)
       active_relationships.find_by(followed_id: other.id).destroy
     end

     # is following a user?
     def following?(other)
       following.include?(other)

     end
     end

我可以获得当前的用户图像，但如果我登录我的帐户，并且我关注某人，我想看到他们的图像不是我的相关帖子 .

<%=image_tag(current_user.avatar.url, class: "img-circle img-responsive img-raised", :size => "100x100") %>