Can't get error message in ajax function from Flask server

Question

In my Flask applòication, I am sending an error message as response from an AJAX submit funciton, this way:

return jsonify(message='An error occurred!'),500

In the client I have this function:

 $("#submit_button").click(function(){
                .....
                $.ajax({
                    url: '/',
                    data: $("#startcopy").serialize(),
                    type: "POST",
                    success: function(response) {
                        console.log(response);
                        $("#wait").hide();
                        alert(response);
                        },
                    error: function(request,status, message) {
                        console.log(request);
                        $("#wait").hide();  
                        alert("Error\n"+message);
                        }
                    });
                }
            });

But I can't get the error message displayed in the alert box. Where am I wrong?

saltire · Accepted Answer · 2017-06-09 16:27:20Z

3

In the error callback, the response body will be a property of the first argument, which in the jQuery docs is named jqXHR and in your code is named request.

Since you returned JSON, try this: alert("Error\n" + request.responseJSON.message);

answered Jun 9, 2017 at 16:27

saltire

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1 Comment

Fabio Marzocca Over a year ago

Great! Shame on me for that!

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