rails项目使用AJAX的无脑四步骤

ajax in rails

1 view 页面显示

<button id="floor_price_<%=product.id%>" onclick="get_floor_price(<%=product.id%>)">获取最低价</button>

2 view页面添加 ajax

<script>
  function get_floor_price(p_id){
    url = "/admin/products/floor_price/" + p_id
    $.ajax({
      url: url,
      success: function(data){
        $('#floor_price_' + p_id).text(data["floor_price"])
      }
    })
  }
</script>

3 建立routes.rb
  get '/admin/products/floor_price/:id', to: 'admin/products#floor_price'

4 controller 返回
 
  def floor_price
    product = Product.find_by_id(params[:id])
    if product.nil?
      @product = Product.page(1).per(18)
      render :index
    end

    floor_price = product.floor_price
    floor_price = "暂无" iffloor_price.blank? 
    render :json => { floor_price: floor_price }
  end