python - Flask Python，试图将列表或字典返回给 Ajax 调用

Question

在 Flask 应用程序中，我有以下 ajax 调用：

    $.ajax({
            url: "{{ url_for( 'bookings.get_customer' ) }}",
            type: "POST",
            data: nameArray,
            success: function( resp ){
                console.log( resp )
            }
        })

如您所见，我正在传递一个数组，我将根据该数组搜索我的 mongo 数据库，该数据库将返回或不返回客户。

所以，负责处理这个 ajax 调用的 python def 是：

@bookings.route( '/get_customer', methods=[ 'POST' ] )
def get_customer():
    name = {}
    for key, value in request.form.items():
     name[ key ] = value

    customer_obj = customer_class.Customer()
    results = customer_obj.search_customer( name )

    return results    

为了论证的缘故，假设 customer_obj 调用返回以下列表：

[{'customer': {
               u'first_name': u'Dave', 
               u'tel': u'0121212121458', 
               u'country': u'UK',     
               u'address2': u'Townington', 
               u'address3': u'Cityville', 
               u'email': u'dave@smith.com', 
               u'postcode': u'A10 5BC', 
               u'address1': u'10 High Street', 
               u'second_name': u'Smith'
             }, 
 'customer_id': u'DaveSmithA10 5BCCat_Vegas1346244086'
}]

当我尝试将此返回给ajax调用时

return results

我收到以下错误：

 TypeError: 'list' object is not callable

这是回溯：

Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1701, in __call__
return self.wsgi_app(environ, start_response)
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1689, in wsgi_app
response = self.make_response(self.handle_exception(e))
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1687, in wsgi_app
response = self.full_dispatch_request()
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1361, in
full_dispatch_request
response = self.make_response(rv)
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1450, in make_response
rv = self.response_class.force_type(rv, request.environ)
File "/usr/local/lib/python2.7/dist-packages/werkzeug/wrappers.py", line 711, in
force_type
response = BaseResponse(*_run_wsgi_app(response, environ))
File "/usr/local/lib/python2.7/dist-packages/werkzeug/test.py", line 818, in
run_wsgi_app
app_iter = app(environ, start_response)
TypeError: 'list' object is not callable

有没有人有什么建议？

谢谢

Answer 1

Flask 不希望您list从视图函数返回对象。之前试试jsonify：

from flask import jsonify

@bookings.route( '/get_customer', methods=[ 'POST' ] )
def get_customer():
    name = {}
    for key, value in request.form.items():
        name[ key ] = value

    customer_obj = customer_class.Customer()
    results = customer_obj.search_customer( name )

    return jsonify(customers=results)    

Answer 2

josonify 工作..但如果你打算只传递一个没有“结果”键的数组，你可以使用 python 中的 json 库。以下转换对我有用..

 import json

 @app.route('/test/json')
 def test_json():
 list = [
        {'a': 1, 'b': 2},
        {'a': 5, 'b': 10}
       ]
 return json.dumps(list)

Answer 3

你需要做

return jsonify(result=your_result)

还要检查可能真的很有帮助的文档。