为什么我无法通过此AJAX和PHP验证获得预期的结果

时间:2019-03-05 10:47:37

标签: javascript php jquery ajax

我正在尝试将AJAX集成到表单提交中。我目前有一种相当完善的方法来提交表单,但想摆脱整个提交,重新加载页面的事情。

我对AJAX和JQUERY完全陌生,所以学习起来很艰难。我正在努力使现有的PHP可以集成到AJAX表单提交中。我所坚持的是能够将验证结果发送到脚本的功能。

我目前在处理php的表单上有这个

已使用收到的反馈中的新代码进行更新

$return = array();
if($validation->passed()) {
  try {
    $getPassageId = Input::get('passageId'); //Get the passage plan id passed via the form
    $latitude = convertDMSToDecimal(Input::get('lat'));
    $longitude = convertDMSToDecimal(Input::get('long'));
    $insertIntoWaypoints = DB::getInstance()->insert('ym_waypoints', array(
      'vessel_id' => $vid,
      'user_id' => $uid,
      'waypoint_num' => Input::get('waypoint'),
      'waypoint_name' => Input::get('waypointName'),
      'latitude' => $latitude,
      'longitude' => $longitude,
      'cts' => Input::get('courseToSteer'),
      'dtw' => Input::get('DistanceToWaypoint'),
      'hw_time' => Input::get('HWTime'),
      'hw_height' => Input::get('HWHeight'),
      'lw_time' => Input::get('LWTime'),
      'lw_height' => Input::get('LWHeight'),
      'chart_num' => Input::get('chartNumbers'),
      'almanac' => Input::get('almanacPages'),
      'radio_signals' => Input::get('radioPages'),
      'por' => Input::get('por'),
      'por_almanac' => Input::get('porAlmanac'),
      'por_vhf' => Input::get('porVHF'),
      'vhf' => Input::get('vhf'),
      'passage_note' => Input::get('notes')
    ));
    $recordID = $insertIntoWaypoints;
    $insertInto = DB::getInstance()->insert('ym_passageplan_route', array(
      'passageplan_id' => $getPassageId,
      'waypoint_id' => $recordID
    ));
    $return['success'] = True;
    $return['message'] = 'successful!';
    print json_encode($return);
  } catch (Exception $e) {
    $return['success'] = False;
    $return['message'] = 'fail';
    print json_encode($return);
  }
} else {
  foreach (array_combine($validation->errors(), $validation->fields()) as $error => $field) {
    // Append an array of the error data to $return.
    $return['success'] = False;
    $return['message'] .= $error;
  }
  print json_encode($return);
}

这是我用来发送数据的脚本

      $(routePlan_form).submit(function(e){
  e.preventDefault();
  $.ajax({
    type: "POST",
    url: "/pages/voyages/passageplans/createroute.php",
    dataType: 'json',
    data: $("#routePlan_form").serialize(),
    'success': function(data) {
      if(data['success']) {
        //refresh the table
        $("#table").load(location.href + " #table");
        //reset the form
        $('#routePlan_form').trigger("reset");
        //scroll to the top
        window.scrollTo({ top: 0, behavior: 'smooth' });
        //send the user a success message
        resetToastPosition();
        $.toast({
          heading: 'Success',
          text: 'Waypoint added successfully',
          textColor: 'white',
          showHideTransition: 'slide',
          hideAfter : 7000,
          icon: 'success',
          loaderBg: '#f96868',
          position: 'top-center'
        })
      } else {
        // var i;
        // for (i = 0; i < data['message'].length; i++) {
        // this.error(this.xhr, data['message']);
        // }
        this.error(this.xhr, data['message']);
      }
    },
    'error': function(jqXHR, textStatus, errorThrown) {
      console.log(textStatus);
    }
  })
})  
});

当故意提交表单时,我遗漏了必填字段,这些字段应将验证错误发送回去。在下面的出色帮助之后,我现在在控制台中得到了预期的错误。但是,它们被列为“必需的航点号。必需的航点名。必需的纬度。必需的经度。”

我需要做的是将此列表拆分为单独的消息。...

我假设我需要某种foreach或$ .each语句,但是对于JQuery来说是新手,我不确定如何进行操作...

作为一个扩展目标,我还希望将以下内容添加到整个内容中,以便可以提醒用户注意错误的字段

          $("#<?php echo $field ?>").addClass("form-control-danger");
      $('<label id="<?php echo $field ?>-error" class="badge badge-danger" for="<?php echo $field ?>"><?php echo $error ?></label>').insertAfter("#<?php echo $field ?>");

任何指针都很棒!

致谢

马特

快速更新---

我越来越近了!我现在在处理php文件中有以下代码

foreach (array_combine($validation->errors(), $validation->fields()) as $error => $field) {
    // Append an array of the error data to $return.
    $return['success'] = False;
    $return['message'] .= [$error];
  }
  print json_encode($return);

以下内容将循环显示消息

else {
         var i;
         for (i = 0; i < data['message'].length; i++) {
         this.error(this.xhr, data['message']);
         }
        //this.error(this.xhr, data['message']);
      }
    },
    'error': function(jqXHR, textStatus, errorThrown) {
      //send the user a success message
      resetToastPosition();
      $.toast({
        heading: 'Error',
        text: '' + textStatus,
        textColor: 'white',
        showHideTransition: 'slide',
        hideAfter : 10000,
        icon: 'error',
        bgColor: '#f96868',
        position: 'top-center',
        loaderBg: '#405189'
      })
    }

这给了我5条弹出错误消息,但是文本指出ArrayArrayArrayArray,所以我知道它正在按我的预期得到4条错误。我认为发生的事情是我将错误添加到$ return ['message']数组中,因此我们正在输出a,b,c,d等。我认为我需要在'message'数组中添加一个数组??任何指向/如何获取错误消息或我要去哪里的指针?

越来越近!!

考虑到发生了什么的逻辑,我现在又变得更近了。现在,我只收到四个消息(如我期望的那样),但是所有消息都在每个消息框中分组在一起,因此我在其中添加了变量“ i”作为对“消息”部分的引用。消息,正如我所期望的!哇!

只需要弄清楚如何向字段中添加一些类,我们都很好!

我正在处理页面中编辑的零件

$return = array();
$messages = array();
$return['success'] = False;
foreach (array_combine($validation->errors(), $validation->fields()) as $error => $field) {
    // Append an array of the error data to $return.
    array_push($messages, $error);
    //$return['message'] = array($error);
  }
  $return['message'] = $messages;
  echo json_encode($return);

和表单页面上的ajax调用

$(document).ready(function() {
$(routePlan_form).submit(function(e){
  e.preventDefault();
  $.ajax({
    type: "POST",
    url: "/pages/voyages/passageplans/createroute.php",
    dataType: 'json',
    data: $("#routePlan_form").serialize(),
    'success': function(data) {
      if(data['success']) {
        //refresh the table
        $("#table").load(location.href + " #table");
        //reset the form
        $('#routePlan_form').trigger("reset");
        //scroll to the top
        window.scrollTo({ top: 0, behavior: 'smooth' });
        //send the user a success message
        resetToastPosition();
        $.toast({
          heading: 'Success',
          text: 'Waypoint added successfully',
          textColor: 'white',
          showHideTransition: 'slide',
          hideAfter : 7000,
          icon: 'success',
          loaderBg: '#f96868',
          position: 'top-center'
        })
      } else {
         var i;
         for (i = 0; i < data['message'].length; i++) {
         this.error(this.xhr, data['message'][i]);
         }
      }
    },
    'error': function(jqXHR, textStatus, errorThrown) {
      //send the user a success message
      resetToastPosition();
      $.toast({
        heading: 'Error',
        text: '' + textStatus,
        textColor: 'white',
        showHideTransition: 'slide',
        hideAfter : 10000,
        icon: 'error',
        bgColor: '#f96868',
        position: 'top-center',
        loaderBg: '#405189'
      })
    }
  })
})
});

2 个答案:

答案 0 :(得分:0)

当前看来,您似乎在每个迭代中都重新定义$return,而不是对其进行追加$return = array('success' => 'False');,而不是$return["success"] = false;。以下可能是朝正确方向迈出的一步:

<?php
    // Declare an empty $return array.
    $return = array();

    // Iterate through the errors and populate the $return array.
    foreach (array_combine($validation->errors(), $validation->fields()) as $error => $field) {

        // Append an array of the error data to $return.
        $return[] = [
            "success" => false,
            "message" => $error,
            "field"   => $field,
        ];
    }

    // Output JSON-encoded array to front-end.
    echo json_encode($return);

答案 1 :(得分:0)

解决了!

我不得不在处理php中移动逻辑

if 'a' in blah.keys()

以及表单页面本身上的AJAX段

$return = array();
$messages = array();
$fields = array();
$return['success'] = False;
if($validation->passed()) {
  try {
    $getPassageId = Input::get('passageId'); //Get the passage plan id passed via the form
    $latitude = convertDMSToDecimal(Input::get('lat'));
    $longitude = convertDMSToDecimal(Input::get('long'));
    $insertIntoWaypoints = DB::getInstance()->insert('ym_waypoints', array(
      'vessel_id' => $vid,
      'user_id' => $uid,
      'waypoint_num' => Input::get('waypoint'),
      'waypoint_name' => Input::get('waypointName'),
      'latitude' => $latitude,
      'longitude' => $longitude,
      'cts' => Input::get('courseToSteer'),
      'dtw' => Input::get('DistanceToWaypoint'),
      'hw_time' => Input::get('HWTime'),
      'hw_height' => Input::get('HWHeight'),
      'lw_time' => Input::get('LWTime'),
      'lw_height' => Input::get('LWHeight'),
      'chart_num' => Input::get('chartNumbers'),
      'almanac' => Input::get('almanacPages'),
      'radio_signals' => Input::get('radioPages'),
      'por' => Input::get('por'),
      'por_almanac' => Input::get('porAlmanac'),
      'por_vhf' => Input::get('porVHF'),
      'vhf' => Input::get('vhf'),
      'passage_note' => Input::get('notes')
    ));
    $recordID = $insertIntoWaypoints;
    $insertInto = DB::getInstance()->insert('ym_passageplan_route', array(
      'passageplan_id' => $getPassageId,
      'waypoint_id' => $recordID
    ));
    $return['success'] = True;
    $return['message'] = 'successful!';
    print json_encode($return);
  } catch (Exception $e) {
    $return['success'] = False;
    $return['message'] = 'Could&apos;t update the database';
    print json_encode($return);
  }
} else {
  foreach (array_combine($validation->errors(), $validation->fields()) as $error => $field) {
    // Append an array of the error data to $return.
    array_push($messages, $error);
    array_push($fields, $field);
  }
  $return['fields'] = $fields;
  $return['message'] = $messages;
  echo json_encode($return);
}
}