ruby-on-rails – Capybara：测试页面创建对象的当前路径

feature 'add lost pet' do
  given(:data) {attributes_for(:lost_pet)}

  background do
    visit  root_path
    click_on 'Register new lost pet'
  end

  scenario 'add new lost pet with valid data' do
    within '#new_lost_pet' do
      fill_in 'Name',with: data[:name]
      fill_in 'Type',with: data[:type]
      fill_in 'Breed',with: data[:breed]
      fill_in 'Gender',with: data[:gender]
      fill_in 'Size',with: data[:size]
      fill_in 'Colour',with: data[:colour]
      fill_in 'Age',with: data[:age]
      fill_in 'Age unit',with: data[:age_unit]
      fill_in 'Description',with: data[:description]
      fill_in 'Collar description',with: data[:collar_description]
      check 'Desexed',:checked
      check 'Microchipped',:checked
      fill_in 'Microchip number',with: data[:microchipped_number]
      select '2015',from: "lost_pet[date_missing(1i)]"
      select 'October',from: 'lost_pet[date_missing(2i)]'
      select '10',from: 'lost_pet[date_missing(3i)]'
      fill_in 'Rewald',with: data[:rewald]
      fill_in 'Image',with: data[:image]
      fill_in 'Adress lost',with: data[:adress_lost]

      click_on 'Create'
    end  

    expect(current_path).to eq lost_pet_path(????)


  end

对于lost_pet_path我需要id,但是我如何创建id？或者如何更好地检查Capybara的路径？