Question

我有Ajax请求这是脚本代码

<script>
$('#variant_model').change(function(){
  var value = $('select#variant_model').val();

  $.ajaxSetup({
    headers: {
      'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
    }
  });
  $.ajax({
    type:"POST",
    url: "showVariantModel",
    data: value,
    success: function(data){
      alert(data);
    }
  })

});
</script>

当我输入web.php代码时

Route::post('/showVariantModel', function(){
	if(Request::ajax()){
		return var_dump(Response::json(Request::all()));
	}
});

一切都很好，我在警报中收到了回复。

但是当我想将所有内容放入控制器时，我在控制台中收到错误500

下面，我将从我的web.php和Controller中添加我的代码。框架是Laravel 5.8

//web.php
Route::post('/showVariantModel', 'VariantsController@checkAttribute');

//VariantsController.php
public function checkAttribute()
{
  if(Request::ajax()){

  return var_dump(Response::json(Request::all()));

}

谁知道我在做什么错，请给个建议...

更新错误

https://i.stack.imgur.com/iDvvG.jpg

感谢谢克尔·阿里博士（Md.Sukel Ali），我更新了控制器。看起来不是

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

use App\Variants;

class VariantsController extends Controller
{ 
  public function checkAttribute(Request $request)

    {

        if($request->ajax()){

        return response()->json($request->all());


        }

    }

}

现在一切正常。谢谢。

Answer 1

缺少结束标记

create TRIGGER ItemTable_OnUpdate
ON ItemTable
INSTEAD OF UPDATE
AS
BEGIN

    Declare @s table( IdNew int,IdOld int)


MERGE INTO ItemTable AS dest
USING INSERTED AS ins ON 1=0   -- always false
    WHEN NOT MATCHED BY TARGET          -- happens for every row, because 1 is never 0
        THEN 
            INSERT (Col, ColOther, Latest)
                     VALUES (Col, ColOther, Latest)
            OUTPUT inserted.ID, ins.ID INTO @s (IdNew, IdOld);


UPDATE ItemTable SET Latest=0 WHERE ID in (select IdOld from @s)


    --updating ProductTable
    INSERT INTO ProductTable (ItemID, [Value], ValueOther, Latest)
    SELECT s.IdNew, pt.[Value], pt.ValueOther, 1 FROM @s s
        inner join ProductTable pt on pt.ItemID=s.IdOld


    UPDATE ProductTable SET Latest=0 WHERE ItemID in (select IdOld from @s)
END;

Answer 2

您需要在控制器中添加导入：

use Illuminate/Http/Request;
use Illuminate/Http/Response;

Answer 3

不要盲目猜测ajax调用背后发生的情况。我建议您学习如何调试Ajax请求。

转到浏览器，右键单击并检查，然后转到“网络”选项卡，您可以看到您的请求。单击您的请求，然后查找响应选项卡。在那里您可以找到发生的确切情况。

public function checkAttribute(Request $request)
{
    if($request->ajax())
    {
        return response()->json($request->all());
    }
}

将每个Ajax的数据发送到Laravel 5.8中的Controller

3 个答案: