railsで検索機能　あいまい検索を実装中

前提・実現したいこと

現在rails で在庫管理のサイトを作成しているところで検索機能を導入し検索できるようにしようとしているよところでエラーなってしまい検索結果が表示できずにいます。

発生している問題・エラーメッセージ

NoMethodError in SearchesController#index
undefined method `search' for #<Class:0x00007f84c25e7ec0>
Extracted source (around line #3):
1
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5
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class SearchesController < ApplicationController
  def index
    @items = Item.search(params[:search]).limit(132)
    @search = params[:search]
  end
end

Rails.root: /Users/yukihiro/stock

Application Trace | Framework Trace | Full Trace
app/controllers/searches_controller.rb:3:in `index'
Request
Parameters:

{"utf8"=>"✓", "search"=>"松永"}

該当のソースコード

rails
1class SearchesController < ApplicationController
2  def index
3    @items = Item.search(params[:search]).limit(132)
4    @search = params[:search]
5  end
6end
7

.search
.search-container
.search-left
= render 'searches/form-bar'
.search-right
%section.items-box-container
-if @search.present?
%h2.search-result-head
=@search
%span.search-result-head-text
の検索結果
.search-result-number
="1-#{@item.count}件表示"
-else
%h2.search-result-nil
新着商品
.items-box-content
= render @item

Rails.application.routes.draw do
  root to: "items#index"
  resources :items, only: [:index, :new,:create, :edit, :destroy, :update, ] 
  resources :searches,only:[:index]
  
    
     
end

.top
  .top_header
    .top_header_name
      NETASTOCKS
    .top_header_search
      = form_tag(searches_path,method: :get) do
        = text_field_tag :search, "",placeholder:"何かお探しですか？"
        = submit_tag 'search', :name => nil
    検索 
  .top_main
    .top_main_text
      ネタ在庫一覧
    .top_main_btn
      =link_to "追加",new_item_path
    .top_main_stock
      .top_main_stock_box
        .top_main_stock_box_type
          .type_name
            ネタ名
          .type_capacity
            内容量
          .type_unit
            単位
          .type_quantity
            個数
          .type_place
            場所
          .type_delivery
            納品日
          .type_edit
            編集
        - @items.each do |item|
          .top_main_stock_box_item
            .item_name
              = item.name
            .item_capacity
              = item.capacity
            .item_unit
              = item.until
            .item_quantity
              = item.quantity
            .item_place
              = item.place
            .item_delivery
              = item.deliverydate
            .item_edit
              =link_to "編集","/items/#{item.id}/edit", method: :get
        = paginate @items

class ItemsController < ApplicationController
  PER = 8
  def index
    @items = Item.page(params[:page]).per(PER)
  end
  
  def new
    @item = Item.new
  end

  def create
    @item = Item.new(item_params)
    if  @item.save
      redirect_to root_path
    else
      render  :new
    end
  end


  def destroy
    item = Item.find(params[:id])
    item.destroy
    redirect_to root_path
  end

  def edit
    @item = Item.find(params[:id])
  end

  def update
    @item = Item.find(params[:id])
    if @item.update(item_params)
       redirect_to root_path
    else
       redirect_to edit_item_path(item.id)
    end
  end


  def self.search(search)
    return Item.all unless search
    Item.where(['name LIKE ?', "%#{search}%"])
  end