I have to dynamically populate content into a DIV on clicking a hyperlink which should pass a value (code) to retrieve the content from server.
How can I achieve this using JQuery, Ajax and Hyperlink? I know how to retrieve content from server using JQuery & Ajax but I am struggling on how to Ajaxify an hyperlink and pass a value?
Well, you could start by giving this link an unique id so that you could reference it from client scripts:
<%= Html.ActionLink(
"link text",
"action",
"controller",
null,
new { id = "myLink" }
) %>
and then you could unobtrusively AJAXify it in a separate file javascript file:
$(function() {
$('#myLink').click(function() {
$.ajax({
url: this.href,
success: function(result) {
// TODO: handle the results here
}
});
return false;
});
});
Of course if the result of this action is a partial view HTML that you would like to inject on some placeholder in the DOM you could use the .load() method:
$(function() {
$('#myLink').click(function() {
$('#result').load(this.href);
return false;
});
});
YAnd if you want to pass some additional values with the AJAX request:
$.ajax({
url: this.href,
data: { someParam: 'some value', someOtherParam: 'some other value' },
success: function(result) {
// TODO: handle the results here
}
});
Related
I've created a form submit with ajax, but it submits twice???
Is there anyone who knows whats going wrong?
This is my code:
var form = $('#myForm'); // contact form
var submit = $('#offertesturen'); // submit button
var alert = $('.alert'); // alert div for show alert message
$('#myForm')
.on('invalid.fndtn.abide', function () {
var invalid_fields = $(this).find('[data-invalid]');
console.log(invalid_fields);
})
.on('valid.fndtn.abide', function(e) {
e.preventDefault(); // prevent default form submit
$.ajax({
url: 'send_form_email.php', // form action url
type: 'POST', // form submit method get/post
dataType: 'html', // request type html/json/xml
data: form.serialize(), // serialize form data
beforeSend: function() {
alert.fadeOut();
submit.html('.....'); // change submit button text
},
success: function(data) {
alert.html(data).fadeIn(); // fade in response data
form.trigger('reset'); // reset form
submit.html('Aanvragen!'); // reset submit button text
$(document).scrollTop(0);
$('#secondModal').foundation('reveal', 'open');
},
error: function(e) {
console.log(e)
}
});
});
I have a link that opens a dialog modal asking for a date. When they click submit, javascript takes the form data, generates an ajax call, and returns the response. This works no problem. However if I immediately click the same link again and submit a new date in the form, I get the results from my first ajax POST.
Essentially, subsequent ajax calls are using the original POST data and nothing new. Code has alerts for troubleshooting. Im assuming im setting some var thats not getting reset, but thought this event handler was canceled with the "off", then re-added immediately after and the vars would be in scope to that function alone.
<script>
//Modal submit
$(document).off('click', '#SubmitAllChecks');
$(document).on('click', '#SubmitAllChecks', function(e) {
e.preventDefault();
var form = $('#AllChecks');
var url = form.attr('action');
var method = form.attr('method');
var data = form.serializeArray();
$.each(data, function(k,v) {
alert(v.name + ' : ' + v.value);
});
$.ajax({
url: url,
type: method,
data: data,
dataType: 'json',
beforeSend: function() {
//add load indicator
window.erpui.startload();
},
success: function(data) {
alert('xhr complete');
$.each(data, function() {
alert(this.value + ' data');
if (this.value == 'error' && this.msg != '') {
window.erpui.endload();
window.erpui.notify.error(this.msg);
window.erpui.notify.commit();
}
else if (this.value == 'success') {
window.erpui.endload();
window.erpui.notify.success(this.msg);
window.erpui.notify.commit();
$('.ui-dialog').remove();
//window.location.href="{% url all_checks %}";
//window.location.reload();
}
});
},
error: function() {
alert('error');
//remove load indicator
window.erpui.endload();
}
});
});
</script>
So I'm trying to get the select2 plugin to work with a Backbone.js / CakePHP app. The idea is that this select2 holds email addresses for contacting people as tasks become completed, but the form is editable. What I want to do is (1) load / display all the already saved email addresses for the task being edited, and (2) I want to still have the select2 perform AJAX searches to list recognized emails.
I keep having this issue where I can either show initial data, OR have the AJAX search feature.
My current code for my select2 box is a Backbone.View, and it looks like:
define([
'backbone',
'jquery',
'jquery.select2'
],
function(Backbone, $, select2) {
var notificationSelector = Backbone.View.extend({
notifications: undefined,
events: {
'change' : 'select2ContactsChanged'
},
initialize: function(attrs) {
this.collection.on('add remove reset', this.render(), this);
this.select2ContactsChanged();
},
render: function() {
var contacts = ["abc#def.com", "joe#banana.com"];
$('.notification-selector').attr('value', contacts);
if(this.select2Control == undefined)
{
// Do Search() + query here
this.select2Control = this.$el.select2({
width: '200px',
placeholder: '#email',
tags: [],
minimumInputLength: 3,
// initSelection: function(element, callback) {
// return $.ajax({
// type: "GET",
// url: "/notifications/fetch/",
// dataType: 'json',
// data: { id: (element.val()) },
// success: function(data) {
// }
// }).done(function(data) {
// console.log(data);
// });
// },
});
}
else
{
// Do Search() + query here
this.select2Control = this.$el.select2({
width: '200px',
placeholder: '#email',
tags: [],
minimumInputLength: 3,
ajax: {
url: '/notifications/search/',
dataType: 'json',
data: function(term, page) {
return {
SearchTerm: term
};
},
results: function(data, page) {
return {
results: data
};
}
}
});
}
},
select2ContactsChanged: function() {
var contacts = this.select2Control.val().split(',');
this.collection.reset(contacts);
}
});
return notificationSelector;
});
I read a response by the creator of Select2 to someone else (https://github.com/ivaynberg/select2/issues/392) in which he says to use a 'custom query' to achieve what seems to be what I want. I'm having trouble finding relevant examples or making enough sense of the docs to figure out what he means.
Can anyone spot what I'm doing wrong / missing?
Thanks for your time!
EDIT
I forgot to mention -- the DOM element this is attached to is <input type="hidden" multiple="true" class="notification-selector select2-result-selectable"></input>
Ok, I finally figured out the solution.
I was misunderstanding $.ajax() -- I did not really think about it actually being an asynchronous call. My code to check for the data being returned from the call was running before the AJAX actually finished, so I was always getting undefined.
I assigned a variable to the AJAX call, and set "async: false", and it worked perfectly.
fetchSetNotifications: function() {
var addresses = $.ajax({
method: 'GET',
dataType: 'json',
context: $('#notifications'),
url: '/Notifications/fetch/',
async: false,
alert(addresses);
}
The jqXHR object I get in 'addresses' then contains the response data I want in the "responseText" attribute.
I am calling an ajax.action link on a page. This will display the name of the document. While i click on the document, an ajax request is fired tot he controller, which will return a File Content Result and I want this file to be shown inline in the browser under the targetID div.
Code - bytestream = fs.ToArray();
fs.Close();
Response.AppendHeader("Content-Disposition", String.Format("inline; filename={0}", fileName));
return File(bytestream, "application/pdf");
The problem is , the file is displayed as the stream and it is not displying the contents correctly.
<legend>Document</legend>
<% if (Model.PresentDocument != null)
{ %>
<li><%: Ajax.ActionLink(Model.PresentDocument, "GetDocumentPage", new RouteValueDictionary(new { controller = "Document", action = "GetDocumentPage", id = Model.PresDocId }), new AjaxOptions { HttpMethod = "Post", UpdateTargetId = "Document" })%></li>
<%} %>
<div id="Document">
</div>
Do i need to do anything specific for this div to display the inline pdf?
You cannot use AJAX to download files. One possible way to achieve this is to have a normal link and when this link is clicked use javascript to dynamically generate an iframe and point the iframe source to the controller action:
<%= Html.ActionLink(
Model.PresentDocument,
"GetDocumentPage",
"Document",
new { id = Model.PresDocId },
new { id = "displayPdf" }
) %>
which is you could AJAXify like this (using jQuery):
$(function() {
$('#displayPdf').click(function() {
$('#Document').html(
$('<iframe/>', {
src: this.href,
width: '300px',
height: '150px'
})
);
return false;
});
});
which assumes that your controller action is accessible through GET requests:
public ActionResult GetDocumentPage(string id)
{
byte[] pdf = ...
Response.AppendHeader("Content-Disposition", String.Format("inline; filename={0}", fileName));
return File(pdf, "application/pdf");
}
I implemented infinite scroll along with masonry on this tumblr: [check revision for link]
The audio player does not appear in posts loaded through infinite scroll, instead it displays the text "[Flash 9 is required to listen to audio.]"
The Inspire Well tumblr theme (I can't post another hyperlink but you can easily google it) seems to have solved this problem through this code:
if(InspireWell.infiniteScrolling && InspireWell.indexPage){
$masonedColumn.infinitescroll({
navSelector : 'ul.page_nav', // selector for the paged navigation
nextSelector : 'ul.page_nav li.page_next a', // selector for the NEXT link (to page 2)
itemSelector : '.post', // selector for all items you'll retrieve
loadingImg : '',
donetext : 'No more pages to load.',
errorCallback: function() {
// fade out the error message after 2 seconds
//$('#infscr-loading').animate({opacity: .8},2000).fadeOut('normal');
}
},
// call masonry as a callback
function( newElements ) {
$(newElements).css({ visibility: 'hidden' });
$(newElements).each(function() {
if($(this).hasClass("audio")){
var audioID = $(this).attr("id");
var $audioPost = $(this);
$audioPost.find(".player span").css({ visibility: 'hidden' });
var script=document.createElement('script');
script.type='text/javascript';
script.src="http://assets.tumblr.com/javascript/tumblelog.js?16";
$("body").append(script);
$.ajax({
url: "http://thetestinggrounds.tumblr.com/api/read/json?id=" + audioID,
dataType: "jsonp",
timeout: 5000,
success: function(data){
$audioPost.find(".player span").css({ visibility: 'visible' });
$audioPost.find("span:first").append('<script type="text/javascript">replaceIfFlash(9,"audio_player_' + audioID + '",\'\x3cdiv class=\x22audio_player\x22\x3e' + data.posts[0]['audio-player'] +'\x3c/div\x3e\')</script>');
}
});
}
});
I tried to adapt this for my tumblr (with placeholder text to see if it was finding the correct element):
$(window).load(function(){
$('#allposts').masonry({
singleMode: true,
itemSelector: '.box'
});
$('#allposts').infinitescroll({
navSelector : "div.navigation",
nextSelector : "div.navigation a:first",
itemSelector : ".box",
debug : true
},
function( newElements ) {
$(this).masonry({ appendedContent: $( newElements ) });
$(newElements).each(function(){
if($(this).hasClass("audio")){
var audioID = $(this).attr("id");
var $audioPost = $(this);
$audioPost.find(".audio span");
var script=document.createElement('script');
script.type='text/javascript';
script.src="http://assets.tumblr.com/javascript/tumblelog.js?16";
$("body").append(script);
$.ajax({
url: "http://fuckyeahempathy.tumblr.com/api/read/json?id=" + audioID,
dataType: "jsonp",
timeout: 5000,
success: function(data){
$audioPost.find(".audio span");
$audioPost.find("span:first").append("<p>audio player not working</p>");
}
});
}
});
}
);
});
But there is no sign of the text. Any help would be greatly appreciated.
Here is a solution I came up with when I needed to implement the same functionality in the template I was creating.
In your HTML, include your AudioPlayer Tumblr tag between comments. This is to prevent loaded scripts from being called. Also add a class "unloaded" to keep track whether or not we've loaded the audio player for this post or not.
...
{block:AudioPlayer}
<div class="audio-player unloaded">
<!--{AudioPlayerBlack}-->
</div>
{/block:AudioPlayer}
...
If you look at the commented code after the page is loaded, you will notice an embed tag being passed to one of the Tumblr javascript functions. Since we commented it, it will not execute. Instead we will want to extract this string and replace the div contents with it.
Create a javascript function which will do this. This can be done with regular javascript, but to save time I will do it with jQuery since this is how I did it for my template:
function loadAudioPosts() {
// For each div with classes "audio-player" and "unloaded"
$(".audio-player.unloaded").each(function() {
// Extract the <embed> element from the commented {AudioPlayer...} tag.
var new_html = $(this).html().substring(
$(this).html().indexOf("<e"), // Start at "<e", for "<embed ..."
$(this).html().indexOf("d>")+2 // End at "d>", for "...</embed>"
);
// Replace the commented HTML with our new HTML
$(this).html(new_html);
// Remove the "unloaded" class, to avoid reprocessing
$(this).removeClass("unloaded");
});
}
Call loadAudioPosts() once on page load, then every time your infinite scrolling loads additional posts.
html
<div class="audio" id="{postID}">{AudioPlayerBlack}</div>
css
.audio {
height:30px;
overflow-y: hidden;
}
.audio span {
display:none;
}
java
setTimeout(function() {
$wall.masonry({ appendedContent: $(newElements) });
/* repair audio players*/
$('.audio').each(function(){
var audioID = $(this).attr("id");
var $audioPost = $(this);
$.ajax({
url: 'http://yoolk.tumblr.com/api/read/json?id=' + audioID,
dataType: 'jsonp',
timeout: 50000,
success: function(data){
$audioPost.append('\x3cdiv style=\x22background-color:white;height:30px\x22 class=\x22audio_player\x22\x3e' + data.posts[0]['audio-player'] +'\x3c/div\x3e');
}
});
});
}, 2000);