Broken Pipe on $.ajax request

Frappe Framework App Development
1

The code in CustomScript (ajax POST request - GET works fine!):

frappe.ui.form.on(“ToDo”, “description”, function (frm) {

        $.ajax({
             url: encodeURI("/api/resource/Customer"), 
             type: "post", 
             beforeSend: function(xhr) {
                xhr.setRequestHeader("X-Frappe-CSRF-Token", frappe.csrf_token);
                xhr.setRequestHeader('Content-Type', 'application/json; charset=utf-8');

             },
             data: {}
        });

});
//# sourceURL=debug_me.js

Need tip how to debug this kind of error:

Traceback (most recent call last):
File “/home/marcin/frappe-bench/apps/frappe/frappe/middlewares.py”, line 15, in call
return super(StaticDataMiddleware, self).call(environ, start_response)
File “/home/marcin/frappe-bench/env/lib/python2.7/site-packages/werkzeug/wsgi.py”, line 599, in call
return self.app(environ, start_response)
File “/home/marcin/frappe-bench/env/lib/python2.7/site-packages/werkzeug/wsgi.py”, line 599, in call
return self.app(environ, start_response)
File “/home/marcin/frappe-bench/env/lib/python2.7/site-packages/werkzeug/local.py”, line 228, in application
return ClosingIterator(app(environ, start_response), self.cleanup)
File “/home/marcin/frappe-bench/env/lib/python2.7/site-packages/werkzeug/wrappers.py”, line 291, in application
return f(*args[:-2] + (request,))(*args[-2:])
File “/home/marcin/frappe-bench/apps/frappe/frappe/app.py”, line 80, in application
response = handle_exception(e)
File “/home/marcin/frappe-bench/apps/frappe/frappe/app.py”, line 135, in handle_exception
response = frappe.utils.response.report_error(http_status_code)
File “/home/marcin/frappe-bench/apps/frappe/frappe/utils/response.py”, line 24, in report_error
frappe.errprint(frappe.utils.get_traceback())
File “/home/marcin/frappe-bench/apps/frappe/frappe/init.py”, line 229, in errprint
print cstr(msg)
IOError: [Errno 32] Broken pipe

This only happens on POST requests, the data provided does not seem to have any impact on this request.

2

For inserting records you seem to use GET instead of POST (not talking about CRUD, but form itself). Is it relevant to the case?

3

This usually happens when the request is taking too long.

When the request takes too long, it is terminated, either by Nginx or by the client itself.

May e this will help you debug.

4

try method instead of type

below is the snippet which works for my use case

	$.ajax({
             url: encodeURIComponent("/api/resource/Customer Plant Variables/" + elem.dataset.name),
             method: "PUT",
             data: {data: JSON.stringify({enabled: elem.checked?1:0})}
        });
5

Yeah - it seems error reporting in Frappe is not always accurate - will fix the documentation for proper Ajax examples.
@BhupeshGupta - thank you for your reply, basically in api.py it waits for “data” key in form_dict. It means you have to go for

data: { data: JSON.stringify( dictOfParams) }

as you wrote.

Thx anyway and topic to be closed.