Need help to resolve ajax call issue
In my view page ( working on codeigniter), there is a dropdown and a div
section. Based on dropdown value, data will get change in div section. I am
using ajax call ( to call method in controller) to upload data in div tag on
dropdown change event. Ajax call working fine on first change event of
dropdown but when i select value for second time in dropdown, ajax function
call is not working ( second select and so on).
My code is:
VIEW PAGE =>
$(document).ready(function() {
$("body").on('change','#assettype_id',function(e){ // "assettype_id" is
dropdown id
//e.preventDefault();
var categoryval = $('#assettype_id :selected').val();
$.ajax({
type: 'POST',
cache: false,
url: 'http://my_path/index.php/assetcontroller/assignpc/'+ categoryval, // Based on "categoryval" data will change in div tag
dataType: 'html',
success: function(data) {
$( "#result" ).load( "http://my_path/index.php/assetcontroller/assignpc/"+ categoryval); // "result" is div tag id
$( "#result" ).html(categoryval);
},
});
return false;
});
});
Why ajax call is not working in dropdown 'second time' change event?
You need to wrap the .on('change') event into a function, so it can be called anytime later.
That's because once you have added new html output through Ajax, this html doesn't yet know about your change event!
So the function my_change_event() needs to be re-called, once your Ajax output has been added to DOM with your $( "#result" ).load()
something like this:
$(document).ready(function() {
my_change_event();
});
function my_change_event(){
$( "#assettype_id" ).on( "change", function() {
$.ajax({
type: 'POST',
cache: false,
url: your_url,
success: function(data) {
// do something with data
// html output
my_change_event();
}
});
}
Related
I'm using ajax to submit pages and return content blocks based on user action for an onboarding sequence.
If have a page which loads and get 1 content element, the user then clicks Yes or No, which loads the next content element into the same space (via ajax).
For some reason my selectors don't seem to be working on that ajax loaded html.
Here is my ajax function which gets the form:
$.ajax({
beforeSend: function() {
$("#loader").toggleClass('progress');
},
type: 'POST',
dataType: 'json',
data: data,
url: baseUrl+'welcome/user_confirmation_form',
complete: function( response ) {
$("#loader").toggleClass('progress');
},
success: function( response ) {
console.log(response);
$("div.welcome-page > .col").html(response.response);
},
error: function( response ) {
$("#next-steps").html(response.response);
}
});
I'm then trying to access the submit button (have tried doing it as a ahref and button type=submit but nothing seems to be selecting the event.
$('div.welcome-page').on('submit', "user_complete", function(e) {
e.preventDefault();
console.log('FOund form');
var user = $(this).serializeArray();
console.log(user);
});
If I view source, the ajax returned HTML is not even in the dom, but it is when viewing the UI normally.
I'm guessing this has something to do with it?
How can I select all the form data?
Any time I click on the button or ahref it just fires the same page again.
If user_complete is a class you are assigning on your submit button in your loaded html, then you are missing a .
$('div.welcome-page').on('submit', ".user_complete", function(e) {
But this will only work if you're using a submit action as this is listening for a submit event. Maybe you want to listen for a click event?
You need to bind the events to your handlers for your newly added HTML elements. Your original call to
$('div.welcome-page').on('submit' ...
Only bound the event handler for the elements that were on the page at that point in time.
You can put your handler into a function ...
var myHandler = function(e) {
e.preventDefault();
var user = $(this).serializeArray();
}
And then after you load the new HTML you need to bind the handler to the event. So, on success with the AJAX you would ...
success: function( response ) {
$("div.welcome-page > .col").html(response.response);
$('div.welcome-page').on('submit', "user_complete", myHandler);
},
I have filters outside of jqGrid that should trigger a grid reload. This entry gave me some good insight into how to implement it, using the postData option: How to filter the jqGrid data NOT using the built in search/filter box
Unfortunately the code snippets are fragments, and I cannot figure out what the overall sequence of calls should be. Here's a condensed view of my current approach:
<script>
$(document).ready(function() {
$("#submit").click(function(e) {
e.preventDefault();
myGrid.trigger('reloadGrid');
});
});
var url="${servicesUrl}/projects";
var myGrid = $("#projectList").jqGrid({
url: url,
datatype: 'json',
mtype: 'GET',
// ...
});
</script>
How should I structure the code so that every click of the Submit button will trigger a grid reload? Once I have that sorted out, I'm sure I'll be able to add the posData part, my problem is mostly with the overall sequence of calls. I'm not sure which calls should be inside of the ready() function, and how to call 'reloadGrid' properly. Any help greatly appreciated.
This is what has worked for me: I set a callback on the beforeRequest event which updates the postData property before each request is made.
Note that you will want to put all your jqGrid init code inside the $(document).ready(function(){}); function, otherwise the your table element may not be in the DOM yet
var url="${servicesUrl}/projects";
$(document).ready(function() {
var $table = $("#projectList");
$table.jqGrid({
url: url,
datatype: 'json',
mtype: 'GET',
beforeRequest: function() {
var postData = $table.getGridParam('postData');
//add parameters to postData here
}
// ...
});
$("#submit").click(function(e) {
e.preventDefault();
$table.trigger('reloadGrid');
});
});
I have some strange behaviour going on with the jQuery ajax functionality in my asp.net MVC3 application.
I have several boxes of data each containing a link to open a popup and change the data in each box. To do this I've added a jquery live() click event to process the data via a jQuery ajax call. In the "success" method of the ajax call, i take the return data and open a UI Dialog popup (a partial view) which contains a list of radio buttons. I select a different radio button and press 'close' - the close button fires another live() click event, processes that new data via an ajax call which refreshes the data in the box on the main page.
This works perfectly first time. If you then click to change it again, the popup opens, allows you to select a new value, but this time pressing close on the popup triggers two click events which throws an null error in my MVC controller.
If you repeat this process it triggers 3 click events, so it's clear that live() is appending these events somewhere.
I've tried using on() and click(), but the page itself is made up of panels loaded in via ajax so I used live() to automatically bind the events.
Here is the code I'm using:
HTML
<p><!--Data to update goes here--></p>
Update Data
First Click event calling popup with Partial View
$('a.adjust').live('click', function (e) {
var jsonData = getJsonString(n[1]);
var url = '#Url.Action("ChangeOptions", "Search")';
var dialog = $('<div id="ModalDialog" style="display:none"></div>').appendTo('body');
// load the data via ajax
$.ajax({
url: url,
type: 'POST',
cache: false,
contentType: "application/json; charset=utf-8",
data: jsonData,
success: function (response) {
dialog.html(response);
dialog.dialog({
bgiframe: true,
modal: true
}
});
}
});
e.preventDefault();
});
Second click event the takes the new info to return updated partial view
$('a#close').live('click', function (event) {
var jsonData = getJsonString(n[1]);
var url = '#Url.Action("GetChangeInfo", "Search")';
$.ajax({
url: url,
type: 'POST',
contentType: "application/json; charset=utf-8",
data: jsonData,
success: function (response) {
$('#box-' + #column).html(response); //this refreshes the box on the main page
},
error: function () {
}
});
$('#ModalDialog').dialog('close');
event.preventDefault();
});
Anybody know what might be happening here, and how I could resolve it?
Use namespaces to unbind previous click binds like this:
$('a.adjust').unbind('click.adjustclick');
Then bind the click action to a.adjust:
$('a.adjust').bind('click.adjustclick', function(){
//your code here
//note the return false, this prevents the browser from visiting the URL in the href attribute
return false;
});
If i understand you correctly, you try to run the second click action when the dialog is closed. Therefor I would use the build in close function for the dialog like this:
$('a.adjust').bind('click.adjustclick', function(){
var jsonData = getJsonString(n[1]);
var url = '#Url.Action("ChangeOptions", "Search")';
var dialog = $('<div id="ModalDialog" style="display:none"></div>').appendTo('body');
// load the data via ajax
$.ajax({
url: url,
type: 'POST',
cache: false,
contentType: "application/json; charset=utf-8",
data: jsonData,
success: function (response) {
dialog.html(response);
dialog.dialog({
bgiframe: true,
modal: true,
close: function(){
var jsonData2 = getJsonString(n[1]);
var url2 = '#Url.Action("GetChangeInfo", "Search")';
$.ajax({
url: url2,
type: 'POST',
contentType: "application/json; charset=utf-8",
data: jsonData2,
success: function (response2) {
$('#box-' + #column).html(response2); //this refreshes the box on the main page
},
error: function () {
}
});
}
}
});
}
});
});
If you are using your own button a#close, bind a click event to it to close the dialog, it will automatically fire the close function for the dialog.
$('a#close').unbind('click.closedialog');
$('a#close').bind('click.closedialog', function () {
$('#ModalDialog').dialog('close');
return false;
}
Try this:
$('a#close').unbind('click').bind('click', function (event) {
//Your Code
});
I am trying to update a dropdown using knockout and data retrieved via an ajax call. The ajax call is triggered by clicking on a refresh link.
The dropdown is successfully populated when the page is first rendered. However, clicking refresh results in clearing the dropdown instead of repopulating with new data.
Html:
<select data-bind="options: pages, optionsText: 'Name', optionsCaption: 'Select a page...'"></select>
<a id="refreshpage">Refresh</a>
Script:
var initialData = "[{"Id":"231271443653720","Name":"Car2"},{"Id":"439319486078105","Name":"Electronics1.2"},{"Id":"115147185289433","Name":"Product"},{"Id":"145033098963549","Name":"Product2"}]";
var viewModel = {
pages : ko.mapping.fromJS(initialData)
};
ko.applyBindings(viewModel);
$('#refreshpage').click(function() {
$.ajax({
url: "#Url.Action("GetPageList", "FbWizard")",
type: "GET",
dataType: "json",
contentType: "application/json charset=utf-8",
processData: false,
success: function(data) {
if (data.Success) {
ko.mapping.updateFromJS(data.Data);
} else {
displayErrors(form, data.Errors);
}
}
});
});
Data from ajax call:
{
"Success": true,
"Data": "[{"Id":"231271443653720","Name":"Car2"},{"Id":"439319486078105","Name":"Electronics1.2"},{"Id":"115147185289433","Name":"Product"},{"Id":"145033098963549","Name":"Product2"}]"
}
What am I doing wrong?
The problem you have is that you are not telling the mapping plugin what to target. How is it suppose to know that the data you are passing is supposed to be mapped to the pages collection.
Here is a simplified version of your code that tells the mapping what target.
BTW The initialData and ajax result were the same so you wouldn't have noticed a change if it had worked.
http://jsfiddle.net/madcapnmckay/gkLgZ/
var initialData = [{"Id":"231271443653720","Name":"Car2"},{"Id":"439319486078105","Name":"Electronics1.2"},{"Id":"115147185289433","Name":"Product"},{"Id":"145033098963549","Name":"Product2"}];
var json = [{"Id":"231271443653720","Name":"Car2"},{"Id":"439319486078105","Name":"Electronics1.2"},{"Id":"115147185289433","Name":"Product"}];
var viewModel = function() {
var self = this;
this.pages = ko.mapping.fromJS(initialData);
this.refresh = function () {
ko.mapping.fromJS(json, self.pages);
};
};
ko.applyBindings(new viewModel());
I removed the jquery click binding. Is there any reason you need to use a jquery click bind instead of a Knockout binding? It's not recommended to mix the two if possible, it dilutes the separation of concerns that KO is so good at enforcing.
Hope this helps.
I have a requirement where jquery modal popup (skeleton) should be re-usable only the content inside the dialog should change probably using partial view.
I have a partialview with modal popup skeleton ( intention is i want to re-use this code across the project)
On click of jqgrid column image i trigger a function
function RenderModalPopup(rowid, tableid, event) {
debugger;
$.ajax({
url: '/Edit/GetPopupPartial',
type: 'POST',
async: false,
success: function (data) {
debugger;
$('#showDialog').load(data);
}
});
which i will call a action method which inturn will load partial view
create a common js like common.js and put the function in it
function RenderModalPopup(rowid, tableid, event) { debugger;
$.ajax({
url: '/Edit/GetPopupPartial',
type: 'POST',
async: false,
success: function (data) {
debugger;
$('#showDialog').load(data);
}
});
and call the function from any page like
RenderModalPopup();