Ruby on rails Rspec错误。（找不到使用的询问）

下面是spec/controllers/askings\u controller\u spec.rb

   require 'rails_helper'

    RSpec.describe AskingsController, type: :controller do
     describe 'Get #show' do
      before do 
          @asking=create(:asking)
          get :show , id: @asking.id
      end
      it 'should render show' do
          expect(response).to render_template(:show)
      end
      it 'should Undertaking new' do
          expect(assigns(:undertaking)).to be_a_new(Undertaking)
      end
      it 'should response status 200' do
          expect(response.status).to eq(200)
      end
     end
    end

rspec结果如下

     1) AskingsController Get #show should render show
       Failure/Error: @asking=Asking.find(id: params[:id]) 
       ActiveRecord::RecordNotFound:
       Couldn't find Asking with 'id'={:id=>"2"}
    2) AskingsController Get #show should Undertaking new
       Failure/Error: @asking=Asking.find(id: params[:id])     
       ActiveRecord::RecordNotFound:
       Couldn't find Asking with 'id'={:id=>"2"}
   3) AskingsController Get #show should response status 200
      Failure/Error: @asking=create(:asking)    
      ActiveRecord::RecordInvalid:
      mailaddress exists.(<- I translate Japanese error.)

1）AskingsController Get#show应呈现show
失败/错误：@asking=asking.find（id:params[：id]）
ActiveRecord:：RecordNotFound:
找不到具有'id'={:id=>“2”}的询问
2） 要求控制员出示新的
失败/错误：@asking=asking.find（id:params[：id]）
ActiveRecord:：RecordNotFound:
找不到具有'id'={:id=>“2”}的询问
3） AskingsController获取#显示应响应状态200
失败/错误：@asking=create（：asking）
ActiveRecord:：RecordInvalid:
mailaddress存在。（您可能传递了错误的参数。请尝试
get:show，{{id:@asking.id}}
谢谢您的评论！抱歉，我尝试了您的解决方案，但仍然存在相同的错误。好的，您可以尝试一下吗？
get:show，@asking.id
1）AskingsController get#show应该呈现show失败/错误：get:show，@asking.id NoMethodError:2:FixnumI的未定义方法'key'，请参阅，
asking.find（id:params[:id]）
应为
asking.find（params[:id]）
。