AJAX发布JSOSN数据为空-Codeigniter

问题描述

我发现了很多类似的问题，但是没有人与我的问题相关，但这是我的AJAX请求

I have found a lot of similar questions, yet no one is related to my question, however, This is my AJAX request

data = JSON.stringify(data);
url = base_url + "index.php/home/make_order";
//alert(url);

var request = $.ajax({
  url: url,
  type: 'POST',
  contentType: 'application/json',
  data: data
});
request.done(function(response){
  alert('success');
});
request.fail(function(jqXHR, textStatus, errorThrown){
  alert('FAILED! ERROR: ' + errorThrown);
});

我的问题是，当到达PHP CI控制器 $ this-> input-> post('data')时，到达 empty !!

My problem is that when it arrives to the PHP CI-controller $this->input->post('data') arrives empty!!

更新这是我的数据:如AJAX请求之前所示:

UPDATEThis is my data: as shown before the AJAX request:

请帮助.预先感谢.

推荐答案

首先，我要感谢所有答复.实际上这是两个错误，第一:正如@bipen所说，数据必须作为对象而不是字符串发送.并且当我尝试使用它时，它没有用，因为我没有在数据中使用单引号

First I'd like to thank all responses.Actually it was a couple of mistakes,First: as @bipen said, data must be sent as an object rather than a string. and when I tried it, it didn't work because I didn't put the single-quote around data

$.ajax({
  url: url,
  type: 'POST',
  contentType: 'application/json',
  data: {'data': data}
});

第二:如@foxmulder所述， contentType 拼写错误，应为 ContentType 所以正确的代码是:

Second: as @foxmulder said, contentType was misspelled, and should be ContentTypeso the correct code is:

$.ajax({
  url: url,
  type: 'POST',
  ContentType: 'application/json',
  data: {'data': data}
}).done(function(response){
  alert('success');
}).fail(function(jqXHR, textStatus, errorThrown){
  alert('FAILED! ERROR: ' + errorThrown);
});

仅供参考，以防有人在获取PHP时遇到问题，这是这样做的方法:

and just FYI in case someone had issues with PHP fetching, this is how to do it:

$data = $this->input->post('data');
    $data = json_decode($data);
    $sum = $data->sum;
    $info_obj = $data->info;
    $item_qty = $info_obj[0]->quantity;

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