I have multiple grids on a single page so my PHP needs to know which jqGrid POST data came from. I thought I could easily use something such as:
jQuery('#grid1').jqGrid({
...
postData:
{
grid: function() { return $(this).attr('id'); }
},
...
});
POST certainly contains grid but the value is populated. For testing I put...
alert($(this).attr('id'));
...elsewhere in my code and it displayed the grid name. I'm not sure how/where to get the value into POST though.
Your help is appreciated, thank you.
I simply added a new field to the POST which contains the "type" of data being submitted so my API knows what it is being handed.
Related
I set up a datatables that initially gets from server some data and represents it, but then everything is left to the client. Some options are:
serverSide: false,
sAjaxSource: mySource,
My $.fn.DataTable.version is 1.10.2.
Then I need to change, client-side, the aaData under the table because some working on data is performed. I need to update the DT to show the client-altered temporary data without send another request to server (for two reason: prevent useless traffic and because that data is being altered).
I am looking for a way to edit the underlying DT databean to edit it, so then calling again
myTable.draw();
on my table I obtain a refresh realtime without sending another get to the server.
The question is, can I access DT data array, and can I edit it?
How is it done if is possible?
EDIT: I need to feed the table the full bean array as it initially took from the server, same format. So individual row/cell add/edit and client-side building functions are not suitable in my case, unless I manually cicle all objects.
SOLUTION
Use the code below:
// Retrieve data
var data = table.ajax.json();
// Modify data
$.each(data.data, function(){
this[0] = 'John Smith';
});
// Clear table
table.clear();
// Add updated data
table.rows.add(data.data);
// Redraw table
table.draw();
DEMO
See this jsFiddle for code and demonstration.
I am working on a social networking site where user Posts are displayed on the home page. They can be liked and commented on. If a post is liked,
it updates the like table through AJAX and have like count incremented by one.
AJAX code:
$(".mlike").click(function () {
$(".murconform").submit(function(e){
return false;
});
var $this=$(this);
var post_id = $(this).val();
var user_id = $(".user_id").text();
alert('Post: '+post_id +' User: '+user_id);
var request = $.ajax({
url: "likes.php",
type: "POST",
data: { post : post_id , user : user_id },
dataType: "html"
});
request.done(function( msg ) {
$this.prev('.likecount').html( msg );
});
});
In the home.php page I have some PHP variables ($userID, $userName) that are data fetched from MySQL and they all work fine but they
don't work with the variables ($viewedUserID, $viewedUserName) in the user.php. In the user.php, only posts related to profile been
viewed are fetched but when you press the like button and try to comment on any of the post it says undefine variables; $viewedUserID, $viewedUserName. And these
variables are defined from the beginning of the page in user.php.
I have been thinking of what might be the possible cause of this and was also thinking the AJAX was suppossed to have effect on the clicked
button only.
NOTE: The alert works just fine.
Thanks in advance.
Was going to write as a comment, but I guess an answer will be clearer:
Ajax
How does AJAX work?
I think you're getting confused with what Ajax's job is. The problem is Ajax is literally just a connector between your front-end (JS / HTML) and back-end (PHP / Rails etc)
Your statements that "Ajax isn't updating MYSQL" lead me to believe you're relying on Ajax to update your table. It won't
Your table will update by using PHP, which is why most of the comments are focused on the PHP & not the JS
PHP
Your Ajax needs to send the correct data to PHP, but then it's your server-side scripts' job to sort it all out, sending a worthy response
Your JS looks like it will work well, but I think your problem will be with your backend. If you update your question with your PHP you'll get a lot more clearer answers!
I am new to Sencha and was am looking for help in setting a checkbox to checked when retrieving data from local storage. I have a basic form that saves data with no problems, and can even load the retrieved data back into the form when i want to edit. However, the checkboxes do not appear as checked and I was hoping someone could help me out or explain how i would accomplish this.
The following code snippet is activated when the edit button is pressed, slides in the form page and populates the data from local storage into the form;
activateNewEvent: function(record) {
var newEvent = this.getNewEvent();
newEvent.setRecord(record);
// console.log(record);
Ext.Object.each(record.data, function(key,value) {
if(value != 'false') {
// record.set('checked', true);
// key.checked(true);
}
});
Ext.Viewport.animateActiveItem(newEvent, this.left);
},
My console shows all the form data and the checkbox data, so the info is being saved correctly, but I am struggling to figure this out.
It's been over a year since I worked with something like this but I think you want to use setValue(true) on the checkbox object. I don't know if changing the underlying record after rendering will check the box.
Hello people
I'm trying to figured this out, but I still can't do it.
I have a rails 3 app, I'm working with invoices and payments. In the form for payments I have a collection_select where I display all the invoices number (extracted from a postgres database), and what I'm trying to do is when i select an invoice autopopulate others text_fields (provider, address, etc.) without reloading the page, in the same form.
I know I should use ajax, js, jquery, but I'm a beginner in these languages, so i don't know how or where to start
hope you can help me... thanks
What you are going to want to do is route an ajax call to a controller, which will respond with json containing the information. you will then use jquery to populate the different fields.
In your routes:
get "invoice/:id/get_json", :controller=>"invoice", :action=>"get_json"
In your invoice_controller:
def get_json
invoice = Invoice.find(params[:invoice_id])
render :text => invoice.to_json
end
In your invoice model (if the default to_json method is not sufficent):
def to_json
json = "{"
json += "id:'#{self.id}'"
json += ",date_created:'#{self.date}'"
... //add other data you want to have here later
json += "}"
end
In your javascript file,
$("#invoice_selecter").change(function(){ //calls this function when the selected value changes
$.get("/invoice/"+$(this).val()+"/get_json",function(data, status, xhr){ //does ajax call to the invoice route we set up above
data = eval(data); //turn the response text into a javascript object
$("#field_1").val(data.date_created); //sets the value of the fields to the data returned
...
});
});
You are probably going to run into a few issues, i would highly recommend downloading and installing fire bug if you are not on google chrome.. and if you are, make sure you are using the development tools. I believe you can open them up by right clicking and hitting inspect element. Through this, you should be able to monitor the ajax request, and whether or not it succeeded and things.
I have built a calendar in php. It currently can be controlled by GET values from the URL. Now I want the calendar to be managed and displayed using AJAX instead. So that the page not need to be reloaded.
How do I do this best with AJAX? More specifically, I wonder how I do with all GET values? There are quite a few. The only solution I find out is that each link in the calendar must have an onclick-statement to a great many attributes (the GET attributes)? Feels like the wrong way.
Please help me.
Edit: How should this code be changed to work out?
$('a.cal_update').bind("click", function ()
{
event.preventDefault();
update_url = $(this).attr("href");
$.ajax({
type : "GET"
, dataType : 'json'
, url : update_url
, async : false
, success : function(data)
{
$('#calendar').html(data.html);
}
});
return false;
});
Keep the existing links and forms, build on things that work
You have existing views of the data. Keep the same data but add additional views that provide it in a clean data format (such as JSON) instead of a document format (like HTML). Add a query string parameter or HTTP header that you use to decide which view to return.
Use a library (such as YUI 3, jQuery, etc) to bind event handlers to your existing links and forms to override the normal activation functionality and replace it with an Ajax call to the alternative view.
Use pushState to keep your URLs bookmarkable.
You can return a JSON string from the server and handle it with Ajax on the client side.