I'm trying to run some tests on some Ajax code we have written, now obviously when tested locally it runs very fast and is great. I need to enforce a delay of 3 seconds so that I can see that the loader is being displayed and the user experiance is good enough.
I have tried the following but recieve the error "Useless settimeout" any other suggestions to achieve this? Any browser plugins?
$('#formAddPost').submit(function() {
//Load the values and check them
var title = $(this).find('#Title');
var description = $(this).find('#Description');
var catId = $(this).find('#Categories');
if (ValidateField(title) == false || ValidateField(description) == false) {
$('.error-message').show();
return false;
}
$('.error-message').hide();
//Show the loading icon
$('.add-post').hide();
$('.add-post-loader').show();
//Temp for testing - allows the showing to the loader icon
setTimeout(MakeAJAXCall(title.val(), catId.val(), description.val()), 1500);
return false;
});
function MakeAJAXCall(title, catId, description) {
$.ajax({
url: "/Message/CreatePost/",
cache: false,
type: "POST",
data: ("title=" + title + "&description=" + description + "&categories=" + catId + "&ajax=1?"),
dataType: "html",
success: function(msg) {
$('#TableMessageList').replaceWith(msg);
$('.add-post-loader').hide();
$('.add-post').show();
}
});
}
As you're testing your page for a delay in the server response, can you put a delay in the server side code instead of client side?
You might be able to do that using fiddler.
The examples scripts include some samples that pause the response.
Would this tool from jsFiddle.net be helpful?
Echo Javascript file and XHR requests
http://doc.jsfiddle.net/use/echo.html
Related
Im having a hard time figuring out how to integrate this ajax request into my view. I'm still learning how to integrate django with ajax requests.
My first question would be: Does the ajax request need to have its own dedicated URL?
In my case I am trying to call it on a button to preform a filter(Preforms a query dependent on what is selected in the template). I have implemented this using just django but it needs to make new request everytime the user preforms a filter which I know is not efficient.
I wrote the most basic function using JQuery to make sure the communication is there. Whenever the user changed the option in the select box it would print the value to the console. As you will see below in the view, I would to call the ajax request inside this view function, if this is possible or the correct way of doing it.
JQuery - Updated
$("#temp").change( function(event) {
var filtered = $(this).val();
console.log($(this).val());
$.ajax({
url : "http://127.0.0.1:8000/req/ajax/",
type : "GET",
data : {
'filtered': filtered
},
dataType: 'json',
success: function(data){
console.log(data)
},
error: function(xhr, errmsg, err){
console.log("error")
console.log(error_data)
}
});
Views.py
def pending_action(request):
requisition_status = ['All', 'Created', 'For Assistance', 'Assistance Complete', 'Assistance Rejected']
FA_status = RequisitionStatus.objects.get(status='For Assistance')
current_status = 'All'
status_list = []
all_status = RequisitionStatus.objects.all()
status_list = [status.status for status in all_status]
# This is where I am handling the filtering currently
if request.GET.get('Filter') in status_list:
user_req_lines_incomplete = RequisitionLine.objects.filter(Q(parent_req__username=request.user) & Q(status__status=request.GET.get('Filter')))
current_status = request.GET.get('Filter')
else:
user_req_lines_incomplete = RequisitionLine.objects.filter(parent_req__username=request.user).exclude(status__status='Completed')
user_reqs = Requisition.objects.filter(par_req_line__in=user_req_lines_incomplete).annotate(aggregated_price=Sum('par_req_line__total_price'),
header_status=Max('par_req_line__status__rating'))
return render(request, 'req/pending_action.html', { 'user_reqs':user_reqs,
'user_req_lines_incomplete':user_req_lines_incomplete,
'requisition_status':requisition_status,
'current_status':current_status,
'FA_status':FA_status})
def filter_status(request):
status = request.GET.get('Filter')
data = {
'filtered': RequisitionLine.objects.filter(Q(parent_req__username=request.user) & Q(status__status=status)),
'current_status': status
}
return JsonResponse(data)
Urls.py
path('pending/', views.pending_action, name='pending_action')
First: you have to divide your template to unchangeable part and the part that you want to modify with your filter.
Second: for your goal you can use render_to_string. See the followning link https://docs.djangoproject.com/en/2.1/topics/templates/#usage
code example (views.py):
cont = {
'request': request, #important key-value
'your_models_instances': your_models_instances
}
html = render_to_string('your_filter_template.html', cont)
return_dict = {'html': html}
return JsonResponse(return_dict)
In your js file you need to determine relative url "{% url 'name in yours url file'%}"
And in success you need to add next line:
success: function(data){
$(".filter-block").html(data.html);
}
i hope it will help you! Good luck!
I am trying to check if the user name is available for use using ajax and codeigniter. I have problem to get the response from the codeingniter controller in my js. file but without success.
Here is the controller function, relevant to the question:
if ($username == 0) {
$this->output->set_output(json_encode(array("r" => true)));
} else {
$this->output->set_output(json_encode(array("r" => false, "error" => "Username already exits")));
}
Rest assured that I do get 1 if username already exists in thedatabase and 0 if it does not exist.
I have the following js.file
// list all variables used here...
var
regform = $('#reg-form'),
memberusername = $('#memberusername'),
memberpassword = $('#memberpassword'),
memberemail = $('#memberemail'),
memberconfirmpassword = $('#memberconfirmpassword');
regform.submit(function(e) {
e.preventDefault();
console.log("I am on the beggining here"); // this is displayed in console
var memberusername = $(this).find("#memberusername").val();
var memberemail = $(this).find("#memberemail").val();
var memberpassword = $(this).find("#memberpassword").val();
var url = $(this).attr("action");
$.ajax({
type: "POST",
url: $(this).attr("action"),
dataType: "json",
data: {memberusername: memberusername, memberemail: memberemail, memberpassword: memberpassword},
cache: false,
success: function(output) {
console.log('I am inside...'); // this is never displayed in console...
console.log(r); // is never shonw in console
console.log(output); is also never displayed in console
$.each(output, function(index, value) {
//process your data by index, in example
});
}
});
return false;
})
Can anyone help me to get the username value of r in the ajax, so I can take appropriate action?
Cheers
Basically, you're saying that the success handler is never called - meaning that the request had an error in some way. You should add an error handler and maybe even a complete handler. This will at least show you what's going on with the request. (someone else mentioned about using Chrome Dev Tools -- YES, do that!)
As far as the parse error. Your request is expecting json data, but your data must not be returned as json (it's formatted as json, but without a content type header, the browser just treats it as text). Try changing your php code to this:
if ($username == 0) {
$this->output->set_content_type('application/json')->set_output(json_encode(array("r" => true)));
} else {
$this->output->set_content_type('application/json')->set_output(json_encode(array("r" => false, "error" => "Username already exits")));
}
Newbie to this - This code is works - in that the call to the script does what it is supposed to but returns the condition 500 and I can not see why. I am looking for any suggestions or changes that I should be making to make this work.
Thanks to all who respond.
function get_update_odometer(vehicle_key,odometer_value){
var url = "[%Catalyst.uri_for('/invoice/dispatch_util/get_update_odometer')%]";
new Ajax.Request(url, {
method: 'get',
parameters: {
key: vehicle_key,
ovalue: odometer_value
},
asynchronous:false,
onSuccess: successFunc,
onFailure: failureFunc
});
var return_v = $('rcontainer').innerHTML;
document.getElementById('odometer').value = return_v;
return true;
}
function successFunc(response){
if (200 == response.status){
var container = $('rcontainer');
var content = response.responseText;
container.update(content);
}
}
function failureFunc(response){
alert("Call has failed " + response.status );
}
Error code is coming from server side, and you provided the client part.
So have a look if your server script get_update_odometer is working, is callable by your web server and etc ...
I have a web application that must work with IE7 (yeah i know..) where the frontend is entirely made with ExtJS4, and theres a servlet used to download files. To download a file i send some parameters so i cant simply use location.href. it must be a POST.
So far it works, but when an exception is thrown in the servlet i dont know how to handle it to show the user some alert box or some message without redirecting to another page.
In my webapp im also using DWR and im aware of the openInDownload() function, but it triggers a security warning in IE.
So, (finally!) the question is
Using this code:
post = function (url, params) {
var tempForm=document.createElement("form");
tempForm.action=url;
tempForm.method="POST";
tempForm.style.display="none";
for(var x in params) {
// ...snip boring stuff to add params
}
document.body.appendChild(tempForm);
tempForm.submit();
return tempForm;
}
is it possible to stay in the same page after submitting ?
or with this other one:
Ext.Ajax.request({
url: './descargaArchivoNivs',
method: 'POST',
autoAbort: true,
params: {
nivs: jsonData
},
success: function(response){
// HERE!!
// i know this is wrong
document.write('data:text/plain,' + response.responseText );
/* this looked promising but a warning pops up
var newwindow = window.open();
newwindow.document.open();
newwindow.document.write('data:text/plain, ' + response.responseText );
newwindow.document.close();*/
},
failure: function(resp){
alert('There was an error');
}
});
is it possible to open the file download dialog // HERE!! with the response content??
or is there some other way to open the file download dialog on success, and on failure show a friendly message without losing the users input (the params of the POST) ?
(sorry if this post was too long)
the following code works on firefox,chrome and IE9 on my PC.
But the callback function doesn't return when I run it in WP7 device using phonegap.
function downloadXML(
$.ajax({
async: true,
cache: false,
type: 'GET',
dataType: "xml",
crossDomain: true,
url: yql_url('http://some-cross-domain-url'),
error:function(xhr, status, errorThrown){
navigator.notification.alert(errorThrown+'\n'+status+'\n'+xhr.statusText);
},
success: function (xml) {
navigator.notification.alert("successful");
}
});
}
yql_url = function(source_url) {
return "http://query.yahooapis.com/v1/public/yql?q=select * from xml where url=\"" + source_url + "\"";
}
Does anyone point out what EXTRA has to be done to make it run on WP7 ? THX
OR let me re-frame the question,
Can someone give me a code snippet which works on WP7 with phonegap that can fetch XML from a cross domain URL.
I have been trying a lot to make it run on WP7 without any success :(
You need to set the following to true:
$.support.cors
and
$.mobile.allowCrossDomainPages
Check the jQuery Mobile Docs
Seems to be similar to Phonegap for Windows Phone jQuery ajax callback not executed
Try the following: comment everything in phonegap-1.3.0.js starting from line 3551 to the end of the file
//(function(win,doc){
//
// doc.addEventListener("DOMContentLoaded",function()
// {
// ......
// if(!docDomain || docDomain.length == 0)
// {
// //console.log("adding our own Local XHR shim ");
// var aliasXHR = win.XMLHttpRequest;
//
// win.XMLHttpRequest = function(){};
//
// var UNSENT = 0;
// ......
//
//
//})(window,document);
PS. For XSS on WP7 you also need the following flag for jQuery $.support.cors = true;
EDIT
PhoneGap 1.4.0rc1 is commited
https://github.com/purplecabbage/callback-windows-phone
Changes include fixes for XHR to local files, + fixes to allow jQM single/multipage apps function correctly.