Question

在我的控制器中，我试图在表格中进行批量插入，在我的第一次尝试中它可以工作，但名称会以某种方式被破坏，如下所示:(循环运行24次，这就是我想要的）

test-port-name-0-1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21 test-port-name-0-1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20 test-port-name-0-1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19 test-port-name-0-1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18 test-port-name-0-1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17 test-port-name-0-1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16 test-port-name-0-1-2-3-4-5-6-7-8-9-10-11-12-13-14-15 test-port-name-0-1-2-3-4-5-6-7-8-9-10-11-12-13-14 test-port-name-0-1-2-3-4-5-6-7-8-9-10-11-12-13 test-port-name-0-1-2-3-4-5-6-7-8-9-10-11-12 test-port-name-0-1-2-3-4-5-6-7-8-9-10-11 test-port-name-0-1-2-3-4-5-6-7-8-9-10 test-port-name-0-1-2-3-4-5-6-7-8-9 test-port-name-0-1-2-3-4-5-6-7-8 test-port-name-0-1-2-3-4-5-6 test-port-name-0-1-2-3-4-5-6-7 test-port-name-0-1-2-3-4-5 test-port-name-0-1-2-3-4 test-port-name-0-1-2 test-port-name-0-1-2-3 test-port-name-0 test-port-name-0-1 test-port-name-0-1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22 test-port-name-0-1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22-23

而不是test-port-name-0 .... test-port-name-23

def bulk_port_import
  if request.post?
    #attempt create
    count = 0
    for i in 1..session[:no_ports]
      params[:dp][:name] = params[:dp][:name] + '-' + count.to_s
      @dp = DevicePort.create params[:dp]
      count = count + 1
    end
  end
 @success = "Saved." if @dp.valid?
  @error = ""
  @dp.errors.each_full {|e| @error += e + ", "}
  redirect_to '/device/update/' + params[:dp][:device_id]
end

不同的尝试：

def bulk_port_import
  if request.post?
    #attempt create
    i = 0
    while i < session[:no_ports] do
      params[:dp][:name] = params[:dp][:name] + '-' + i.to_s
      @dp = DevicePort.create params[:dp]
      i++
    end
  end
  session.delete(:no_ports)
  @success = "Saved." if @dp.valid?
  @error = ""
  @dp.errors.each_full {|e| @error += e + ", "}
  redirect_to '/device/update/' + params[:dp][:device_id]
end

但有了这个，我得到了syntax error, unexpected kEND，我无法看到我在哪种情况下做错了，这可能是愚蠢的事情。

Answer 1

因为你正在改变循环中的params [：dp] [：name]

def bulk_port_import
  if request.post?
    #attempt create
    count = 0
    for i in 1..session[:no_ports]
      dp_name = params[:dp][:name] + '-' + count.to_s
      @dp = DevicePort.create(params[:dp].merge(:name => dp_name))
      count = count + 1
    end
  end
  @success = "Saved." if @dp.valid?
  @error = ""
  @dp.errors.each_full {|e| @error += e + ", "}
  redirect_to '/device/update/' + params[:dp][:device_id]
end

Rails - 简单循环不工作

1 个答案: