ruby on rails コメント実装時ログインに飛んでしまう

<img src="<%= "/user_images/#{@user.image_name}" %>">

<img src="<%= "/user_images/#{c.user.image_name}" %>">

        <a href="<%= user_path(c.user_id) %>"><%= image_tag c.user.image.to_s,
          class:"rounded-circle icon_image mr-3 mb-3"%></a>

post = Post.find(params[:post_id])

def user_signed_in?
  !!current_user
end

def current_user
  @current_user ||= warden.authenticate(scope: :user)
end

class PostsController < ApplicationController
    before_action :authenticate_user
    before_action :ensure_correct_user, {only: [:edit, :update, :destroy]}
    
  def index
    @posts = Post.all.order(created_at: :desc)
  end
  
  def show
    @post = Post.find_by(id: params[:id])
    @user = @post.user
    @post = Post.find(params[:id])
    @comments = @post.comments
    @comment = @comments.new
  end
   
  def new
      @post = Post.new
  end
  
  def create
    @post = Post.new(
      content: params[:content],
      user_id: @current_user.id
      )
    if @post.save
      flash[:notice] = "投稿を作成しました"
     redirect_to("/posts/index")
    else
     render("posts/new")
    end
  end

 def edit
  @post = Post.find_by(id: params[:id])
 end
 
 def update
 @post = Post.find_by(id: params[:id])
 @post.content = params[:content]
 if @post.save
   flash[:notice] = "投稿を編集しました"
   redirect_to("/posts/index")
 else
   render("posts/edit")
 end
 end
 
 def destroy
   @post = Post.find_by(id: params[:id])
   @post.destroy
   flash[:notice] = "投稿を削除しました"
   redirect_to("/posts/index")
 end
 
 def ensure_correct_user
     @post = Post.find_by(id: params[:id])
     if @post.user_id != @current_user.id
         flash[:notice] = "権限がありません"
         redirect_to("/posts/index")
     end
 end
 
end

class UsersController < ApplicationController
  
  before_action :authenticate_user, {only: [:index, :show, :edit, :update]}
  before_action :forbid_login_user, {only: [:new, :create, :login_form, :login]}
  before_action :ensure_correct_user, {only: [:edit, :update]}
  

  def index
    @users = User.all
  end
  
  def show
    @user = User.find_by(id: params[:id])
  end
  
  def new
    @user = User.new
  end
  
  def create
    @user = User.new(
      name: params[:name],
      email: params[:email],
      image_name: "fashion-985556_1920.jpg",
      password: params[:password]
    )
    if @user.save
      session[:user_id] = @user.id
      flash[:notice] = "ユーザー登録が完了しました"
      redirect_to("/users/#{@user.id}")
    else
      render("users/new")
    end
    
  end
 
  def edit
    @user = User.find_by(id: params[:id])
  end
  
  def update
    @user = User.find_by(id: params[:id])
    @user.name = params[:name]
    @user.email = params[:email]
    
    if params[:image]
      @user.image_name = "#{@user.id}.jpg"
      image = params[:image]
      File.binwrite("public/user_images/#{@user.image_name}", image.read)
    end
    
    if @user.save
      flash[:notice] = "ユーザー情報を編集しました"
      redirect_to("/users/#{@user.id}")
    else
      render("users/edit")
    end
  end
  
  def login_from
  end
 
  
  def login
    @user = User.find_by(email: params[:email])
    if @user && @user.valid_password?(params[:password])
      session[:user_id] = @user.id
      flash[:notice] = "ログインしました"
      redirect_to("/posts/index")
    else
      @error_message = "メールアドレスまたはパスワードが間違っています"
      @email = params[:email]
      @password = params[:password]
      render("users/login_form")
    end
  end
  
  

  
  def auth_failure
    @user = User.new
    render("users/login_form")
  end
  
  def logout
    session[:user_id] = nil
    flash[:notice] = "ログアウトしました"
    redirect_to("/login")
  end
  
  def ensure_correct_user
    if @current_user.id != params[:id].to_i
      flash[:notice] = "権限がありません"
      redirect_to("/posts/index")
    end
  end
  
 
end

class ApplicationController < ActionController::Base
  before_action :set_current_user
  
  def set_current_user
    @current_user = User.find_by(id: session[:user_id])
    
  end
  
  def authenticate_user
    if @current_user == nil
      flash[:notice] = "ログインが必要です"
      redirect_to("/logins")
    end
  end
  
  def forbid_login_user
    if @current_user
      flash[:notice] = "すでにログインしています"
      redirect_to("/posts/index")
    end
  end
  
end