リロードしないとコメントが反映されない

rialsでtwitterのようなものを作っています。
非同期でコメント機能作ったを際にリロードしないとコメントが反映されない事で詰まっています。


### 発生している問題・エラーメッセージ
  
ActionView::Template::Error (No route matches {:action=>"show", :controller=>"users", :id=>nil}, missing required keys: [:id]):
    12:                 <%= image_tag comment.user.image, style: "width: 60px; border-radius: 50%;" %>
    13:             </div>
    14:             <div class="comment-text">
    15:                 <p><%= link_to "@#{comment.user.name}", user_path(@user) %></p>
    16:                 <div class="comment-entry">
    17:                     <%= comment.content %>
    18:                     <% if comment.user == current_user %>

該当のソースコード

UsersController
1class UsersController < ApplicationController
2  before_action :redirect_loggedin_user, only: [:new, :create]
3  before_action :redirect_unlogin_user, only: :show
4
5  def new
6    @user = User.new
7  end
8
9  def create
10    @user = User.new(user_params)
11    if @user.save
12      session[:user_id] = @user.id
13      redirect_to new_profile_path, notice: "サインインしました"
14    else
15      render :new
16    end
17  end
18  def show
19    @user = User.find(params[:id])
20  end
21
22  private
23  
24  def user_params
25    params.require(:user).permit(:email, :password, :password_confirmation)
26  end
27end
28

user
1class User < ApplicationRecord
2  has_secure_password
3  validates :email, presence: true, uniqueness: true
4  has_one :profile, dependent: :destroy
5  has_many :posts, dependent: :destroy
6  has_many :likes
7  def liked_by?(post_id)
8    likes.where(post_id: post_id).exists?
9  end
10  
11  has_many :comments, dependent: :destroy
12  delegate :name, :study, :purpose, :image, to: :profile
13

PostsController
1class PostsController < ApplicationController
2    before_action :redirect_unlogin_user
3    before_action :find_post, only:[:edit, :update, :destroy]
4    before_action :find_public_post, only:[:show]
5
6    def index
7         @posts = Post.all.order(created_at: :desc)
8         @post = current_user.posts.new
9    end 
10    
11    def show
12        @post = Post.find(params[:id])
13        @comment = Comment.new
14        @comments = @post.comments.order(created_at: :desc)
15    end
16    
17    def edit
18    end
19    
20     def new
21        return redirect_to new_profile_path, alert: "プロフィールの登録をしてください" if current_user.profile.blank? 
22        @post = Post.new
23    end
24    
25    def create
26        @post = Post.new(post_params)
27        @post.user_id = current_user.id
28        if @post.save
29            redirect_to root_path, notice: "投稿しました"
30        else
31            render :new
32        end
33    end
34    
35    def update
36        if @post.update(post.params)
37            redirect_to root_path, notice: "投稿を更新しました"
38        else
39            render :edit
40        end
41    end
42    
43    def destroy
44        if @post.destroy
45            redirect_to root_path, notice: "削除しました"
46        else
47            redirect_to root_path, alert: "削除できませんでした"
48        end
49    end
50    
51    def post_params
52        params.require(:post).permit(:content, images: []).tap do |v|v[:user_id] = session[:user_id]
53    end
54    end
55    
56    private
57    
58    def find_post
59        @post = Post.where(user_id: session[:user_id]).find(params[:id])
60        @user = User.find(@post.user_id)
61    end
62    
63    def find_public_post
64        @post = Post.find(params[:id])
65        @user = User.find(@post.user_id)
66    end
67end
68