Python

Question

我想我已经查看了 google 中的几乎所有示例来解决问题，但仍然无法正常工作。

我的目标是点击按钮后从服务器请求数据。
我此时得到的错误：

Traceback (most recent call last):
  File "/opt/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 1546, in __call__
    return response(environ, start_response)
TypeError: 'str' object is not callable
INFO     2015-01-04 22:16:52,235 module.py:709] default: "POST /nearest_banks/radius HTTP/1.1" 500 662

我的代码：

ajax函数：

<script type="text/javascript">
    $( "#yes" ).click(function() {
        $( "#ask_user" ).hide();
        $.ajax({
            type: "post",
            url: '/nearest_banks/radius',
            contentType: "application/json; charset=utf-8",
            dataType: "json",
           // data: { 'names': {{names}}, 'location': {{location}} },
            success: function (output) {
                output = JSON.parse(output);
                ("#places").empty();
                output.forEach(function (names) {
                    var $row = $('<p>').appendTo("#places");
                });
            }});
    });
</script>

Python 函数：

def post(self):
        names, location, telephone, check = funcs.Findplaces(default_radius)  
        dict = {'names': names, 'location': location}
        output = json.dumps(dict)
        return output

函数 Findplaces 运行良好。它 returns 名称、位置等以 Unicode 类型的正确方式。

这些是我的网址：

application = webapp2.WSGIApplication([
   webapp2.Route(r'/', handler=MainPage, name='mpage', handler_method='get'),
   webapp2.Route(r'/nearest_banks', handler=Nearest_banks, name='ne_banks', handler_method='main_func'),
   #webapp2.Route(r'/nearest_banks/radius', handler=Nearest_banks, name='ne_banks', handler_method='get'),
   webapp2.Route(r'/nearest_banks/radius', handler=Nearest_banks, name='radius', handler_method='post'),
], config=session_module.config, debug=True)

据我所知，错误出在 Python def post 函数中。请帮我解决这个问题...

我只需要从服务器获取数据并将其显示在页面上的某个标记中...

Answer 1

见http://webapp-improved.appspot.com/guide/handlers.html#returned-values

A handler method doesn't need to return anything: it can simply write to the response object using self.response.write().

But a handler can return values to be used in the response. Using the default dispatcher implementation, if a handler returns anything that is not None it must be a webapp2.Response instance. If it does so, that response object is used instead of the default one.

您的 post() 处理程序现在正在返回一个字符串。

Python - 从服务器获取数据 (ajax) - 'str' object is not callable 错误

Python - get data from server (ajax) - 'str' object is not callable error

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