如何使用jquery ajax将json对象正确传递给flask服务器

i want to pass a json object which contains nested objects from my client to my server.

我想传递一个json对象，其中包含从我的客户端到我的服务器的嵌套对象。

on the client side, my data structure looks like this:

在客户端，我的数据结构如下所示：

var response = {};
response['screening'] = '1';
response['assistance'] = 'wheelchair access';
response['guests'] = {};
response['guests']['1'] = {}
response['guests']['1']['first'] = 'John'
response['guests']['1']['last'] = 'Smith'
response['guests']['2'] = {}
response['guests']['2']['first'] = 'Dave'
response['guests']['2']['last'] = 'Smith'

and my ajax call looks like this:

我的ajax调用看起来像这样：

$.ajax({
  type: "POST",
  url: window.location.pathname,
  data: response
 }).done(function( msg ) {
   alert( "Data Saved: " + msg );
 });

after posting this data to my server, which is run using python flask, i use the request.form object to inspect what was posted from the client. i'd like the data to be structured the same way, however, this is the output on the server:

在将此数据发布到使用python flask运行的服务器之后，我使用request.form对象来检查从客户端发布的内容。我想要以相同的方式构建数据，但是，这是服务器上的输出：

ImmutableMultiDict([('guests[1][first]', u'John'), ('screening', u'2'), ('guests[2][last]', u'Smith'), ('guests[2][first]', u'Dave'), ('assistance', u'wheelchair access'), ('guests[1][last]', u'Smith')])

as you can see, the response['guests'] object got flattened, and all of its children, such as:

正如您所看到的，响应['guests']对象变得扁平化，并且它的所有子节点，例如：

'guests[2][first]'

的客人[2] [第一]'

... are just a strings, not elements of their parent response['guests'].

......只是一个字符串，而不是父母反应的元素['来宾']。

is there a better way to send this block of data from my client to my server, and maintain its structure properly?

有没有更好的方法将这个数据块从我的客户端发送到我的服务器，并正确维护其结构？

thanks!

谢谢！

2 个解决方案

#1

You could send your object as a JSON string:

您可以将对象作为JSON字符串发送：

var data = {
    screening: '1',
    assistance: 'wheelchair access',
    guests: [
        {
            first: 'John',
            last: 'Smith'
        },
        {
            first: 'Dave',
            last: 'Smith'
        }
    ]
};

$.ajax({
    type: 'POST',
    url: window.location.href,
    data: JSON.stringify(response),
    dataType: 'json',
    contentType: 'application/json; charset=utf-8'
}).done(function(msg) {
    alert("Data Saved: " + msg);
});

And then use request.json to access it.

然后使用request.json访问它。

#2

On the client side, you need to convert that javascript object to a json string. To do so, you can use this:

在客户端，您需要将该javascript对象转换为json字符串。为此，您可以使用：

JSON.stringify(my_object) // This will return a string that you can pass in you ajax request

Then on the server side, you need to convert that object to a python dictionnary using the json module:

然后在服务器端，您需要使用json模块将该对象转换为python dictionnary：

import simplejson
my_new_object = simplejson.loads(my_json) // my_json is my_object from the client (previously called my_object)

my_new_object is now a python dictionnary, and you can do whatever you want with it

my_new_object现在是一个python dictionnary，你可以随心所欲地做任何事情

#1