railsでredisのzremが実行できません

環境　vagrant macOS
railsでredisのソート済みセット型を使ってブログ記事のpvランキングを作っています
pv数のカウントや（redis_access）pv数の表示（redis_page_view）はうまくいくのですが、
記事を削除した際にまとめてredisのデータも削除しようと、
・comment.rbにredis_deleteを記述し、
・destroyアクションで@comment.redis_deleteを記述しても
redisにデータがのこってしまいます。
ただ、redis-cliでzrem comments 46などを実行すると消えてくれます。

redis-cli

#奇数番が記事のid、偶数番号が記事のpv数
127.0.0.1:6379> zrevrangebyscore comments +inf -inf withscores
1) "6"
2) "92"
3) "46"
4) "3"
5) "48"
6) "2"
7) "49"
8) "1"
127.0.0.1:6379> zrem comments 46
(integer) 1
127.0.0.1:6379> zrevrangebyscore comments +inf -inf withscores
1) "6"
2) "92"
3) "48" #id46,pv数3の記事が消える
4) "2"
5) "49"
6) "1"

comment.rb

class Comment < ApplicationRecord
    validates :user_id, {presence: true}
    def redis_access
        REDIS.zincrby "comments", 1, self.id
    end

    def redis_page_view
        REDIS.zscore("comments", self.id).floor
    end

    def Comment.most_popular(limit: 3)
        most_popular_ids = REDIS.zrevrangebyscore "comments", "+inf", 0, limit: [0, 3]
        where(id: most_popular_ids).sort_by{ |comment| most_popular_ids.index(comment.id.to_s) }
    end

    def redis_delete
        REDIS.zrem "comments", params[:id]
    end
end

comments.conroller.rb

class CommentsController < ApplicationController

  def test
  end

  def index
    @comments = Comment.all
  end

  def show
    @comment = Comment.find_by(id: params[:id])
    @user = User.find_by(id: @comment.user_id)
    @comment.redis_access
  end

  before_action :authenticate_user, {only: [:new, :create, :edit, :update, :destroy]}

  def new
  end

  def create
    Comment.create(title: comment_params[:title], content: comment_params[:content],user_id: current_user.id)  
    redirect_to("/comments/index")
  end

  def edit
    if Comment.find_by(id: params[:id]).user_id == current_user.id 

      @comment = Comment.find_by(id: params[:id])
    else
      flash[:notice] = "Not yours"
      redirect_to("/comments/index")
    end
  end

  def update
    if Comment.find_by(id: params[:id]).user_id == current_user.id 
      @comment = Comment.find_by(id: params[:id])
      @comment.title = comment_params[:title]
      @comment.content = comment_params[:content]
      @comment.save
      redirect_to("/comments/index")
    else
      flash[:notice] = "Not yours"
      redirect_to("/comments/index")
    end
  end

  def destroy
    if Comment.find_by(id: params[:id]).user_id == current_user.id 
      @comment = Comment.find_by(id: params[:id])
      @comment.redis_delete
      @comment.destroy
      redirect_to("/comments/index")
    else
      flash[:notice] = "Not yours"
      redirect_to("/comments/index")
    end
  end

  private
  def comment_params
    params.permit(:title,:content)
  end
end

試したこと
rails,redisサーバーの再起動
redis_deleteを削除し、def redis_delete
REDIS.zrem "comments", params[:id]
endを追加

class Comment < ApplicationRecord
    validates :user_id, {presence: true}
    after_destroy do 
        REDIS.zrem "comments", self.id
    end
    def redis_access
        REDIS.zincrby "comments", 1, self.id
    end

    def redis_page_view
        REDIS.zscore("comments", self.id).floor
    end

    def Comment.most_popular(limit: 3)
        most_popular_ids = REDIS.zrevrangebyscore "comments", "+inf", 0, limit: [0, 3]
        where(id: most_popular_ids).sort_by{ |comment| most_popular_ids.index(comment.id.to_s) }
    end

    
end