Question

我试图根据第一个保管箱中选择的值来获取第二个保管箱上的记录。我在第一个保管箱中的值正在加载，但是当我选择一个随机值时，第二个值中没有任何值。我在浏览器中检查了控制台，并显示了错误（500个内部服务器错误）。

但是，当它在本地主机上运行时，它绝对可以正常工作。 仅当在Live Server上运行时会发生此错误

我有一个包含此表单的主侧栏文件。而ajax代码是

    $(document).ready(function(){

     $('.dynamic').change(function(){
      if($(this).val() != '')
      {
       var select = $(this).attr("id");
       var value = $(this).val();
       var dependent = $(this).data('dependent');
       var _token = $('input[name="_token"]').val();
       $.ajax({
          url:"{{ route('pagescontroller.fetch') }}",
        method:"POST",
        data:{select:select, value:value, _token:_token, dependent:dependent},
        success:function(result)
        {
         $('#'+dependent).html(result);
        }

       })
      }
     });
)};

我在控制器中的代码：-

public function index(){
  $pc = $this->getPostcodes();
  $cl = $this->carFetch();
  return view('home')->with('postcodes', $pc)->with('carLists', $cl);
 }

public function getPostcodes(){
     $postcodes =  DB::table('postcodes')
              ->get();

            return $postcodes;
}

public function carFetch(){
    $carLists = DB::table('carlists')
            ->groupBy('Make')
            ->get();
            return $carLists;
}


      function fetch(Request $request)
      {
       $select = $request->get('select');
       $value = $request->get('value');
       $dependent = $request->get('dependent');
       $data = DB::table('carLists')
         ->where($select, $value)
         ->groupBy($dependent)
         ->get();
       $output = '<option value="">Select '.ucfirst($dependent).'</option>';
       foreach($data as $row)
       {
        $output .= '<option value="'.$row->$dependent.'">'.$row->$dependent.'</option>';
       }
       echo $output;
      }

我的路线：-

Route::get('/', 'PagesController@index')
Route::post('sidebar/fetch', 'PagesController@fetch')->name('pagescontroller.fetch');

不确定其如何在localhost而不是实时服务器上工作。

错误截图：-

Answer 1

请检查

Making all in man
make[5]: Entering directory '/test/ruby-2.4.5/tst/ext/fiddle/libffi-3.2.1/man'
make[5]: Nothing to be done for 'all'.
make[5]: Leaving directory '/test/ruby-2.4.5/tst/ext/fiddle/libffi-3.2.1/man'
make[5]: Entering directory '/test/ruby-2.4.5/tst/ext/fiddle/libffi-3.2.1'
  CC       src/prep_cif.lo
  CC       src/types.lo
  CC       src/raw_api.lo
  CC       src/java_raw_api.lo
  CC       src/closures.lo
  CC       src/powerpc/ffi_darwin.lo
../../../../ext/fiddle/libffi-3.2.1/src/powerpc/ffi_darwin.c: In function 'ffi_p                                                                                                                                                             rep_args':
../../../../ext/fiddle/libffi-3.2.1/src/powerpc/ffi_darwin.c:112:17: warning: un                                                                                                                                                             used variable 'abi' [-Wunused-variable]
   const ffi_abi abi = ecif->cif->abi;
                 ^
  CPPAS    src/powerpc/aix.lo
libtool: compile: unable to infer tagged configuration
libtool: compile: specify a tag with `--tag'
Makefile:1335: recipe for target 'src/powerpc/aix.lo' failed
make[5]: *** [src/powerpc/aix.lo] Error 1
make[5]: Leaving directory '/test/ruby-2.4.5/tst/ext/fiddle/libffi-3.2.1'
Makefile:1596: recipe for target 'all-recursive' failed
make[4]: *** [all-recursive] Error 1
make[4]: Leaving directory '/test/ruby-2.4.5/tst/ext/fiddle/libffi-3.2.1'
Makefile:730: recipe for target 'all' failed
make[3]: *** [all] Error 2
make[3]: Leaving directory '/test/ruby-2.4.5/tst/ext/fiddle/libffi-3.2.1'
Makefile:370: recipe for target 'libffi-3.2.1/.libs/libffi_convenience.a' failed
make[2]: *** [libffi-3.2.1/.libs/libffi_convenience.a] Error 2
make[2]: Leaving directory '/test/ruby-2.4.5/tst/ext/fiddle'
exts.mk:212: recipe for target 'ext/fiddle/all' failed
make[1]: *** [ext/fiddle/all] Error 2
make[1]: Leaving directory '/test/ruby-2.4.5/tst'
uncommon.mk:220: recipe for target 'build-ext' failed
make: *** [build-ext] Error 2

在carFetch中，您将表格名称用作汽车列表

但是在获取中，您使用表名作为carLists

Linux服务器区分大小写：）

DB::table('carlists')
 (or)
DB::table('carLists')

到

$request->get('select');

Answer 2

您需要检查.htaccess文件。任何语法错误都会导致显示500 Internal Server Error消息。要确认.htaccess配置是否错误是500 Internal Server错误的原因，请暂时删除或重命名.htaccess文件并进行检查。

Answer 3

500错误表示您的控制器存在错误，请将其放入JavaScript代码：

...
success:function(result)
{
    $('#'+dependent).html(result);
},
error: function(result) {
    console.log(result);
}
...

因此，您可以在控制台中读取错误，并在评论中发布图像以进行纠正。

Laravel-jQuery动态下拉列表显示错误500内部服务器错误

3 个答案: