My ajax:
$.ajax(
{
type:'POST',
url: 'ajax.php', //the script to call to get data
data: {request: 'getUser',id:id},
dataType: 'json', //data format
complete: function(data) //on receive of reply
{
console.log(data);
}
});
My php file that handles the ajax request(ajax.php):
elseif ($_POST['request'] == 'getUser')
{
$DAO = new UserDAO;
$q = $DAO->ajaxGetUser($_POST['id']);
echo json_encode($q);
}
ajaxGetUser function:
public function ajaxGetUser($id)
{
$q = $this->db->prepare('SELECT * FROM user WHERE userId=:id');
$q->bindValue(':id', $id, PDO::PARAM_INT);
$q->execute();
$r = $q->fetch(PDO::FETCH_OBJ);
unset($r->userPassword);
return $r;
}
console.log(data) is showing me the object in the "ResponseJSON" on firebug, but when I try something like console.log(data.userName), console.log(data[0].userName), they're undefined, since i'm not very good in ajax i've been looking many threads but couldn't find one that could help me.
I guess the json is already parsed since dataType is set to "json", how can I access the User object with all its properties? Thanks for your help
readyState 4
responseJSON
Object { userId="6", userName="321", more...}
responseText
"{"userId":"6","userName...":null,"userStatus":"0"}"
status 200
statusText "OK"
abort function()
always function()
complete function()
done function()
error function()
fail function()
getAllResponseHeaders function()
getResponseHeader function()
overrideMimeType function()
pipe function()
progress function()
promise function()
setRequestHeader function()
state function()
statusCode function()
success function()
then function()
Set a success handler instead of complete:
The callback hooks provided by $.ajax() are as follows:
[...]
4. success callback option is invoked, if the request succeeds. It
receives the returned data, a string containing the success code,
and the jqXHR object.
[...]
6. complete callback option fires, when the request finishes,
whether in failure or success. It receives the jqXHR object,
as well as a string containing the success or error code.
The code would look like:
success: function(data)
{
console.log(data, data.userId, data.userName);
}
It seems data was an object, I managed to get the user object was by using data.responseJSON, so data.responseJSON.userName for the name.
I don't know why it would return in this way through.
Related
I have the below function in my WordPress functions file, and if I run it as below without the two parameters it works fine, but when I pass the parameters the error handler in the jQuery returns status 500.
If I don't pass the parameters to the PHP function I get status 200 from jQuery, but it's coming from the error handler, and not from the success handler. Why so?
function subscribe_funk(){//$payment_method, $customer_handle){
return "This is a test";
die();
}
It gets called from this ajax:
function subscribe(data) {
jQuery.ajax({
url: PT_Ajax.ajaxurl,
type: "POST",
data: {'action': 'subscribe_funk', 'payment_method': data.payment_method, 'customer_handle': data.customer},
cache: false,
dataType: 'json',
beforeSend: function(){
console.log('Before send subscribe');
},
complete: function(){
},
success: function (response) {
console.log('Message from success handler: ');
console.log(response);
},
error: function(xhr, status, error){
console.log("Message from error handler:")
var errorMessage = xhr.status + ': ' + xhr.statusText
console.log(errorMessage);
}
});
}
Your function expects 2 parameters, however WP/ajax is not passing them directly.
You need to fetch them from $_POST array yourself:
function subscribe_funk(){
$payment_method = $_POST['payment_method'];
$customer_handle = $_POST['customer_handle'];
return "This is a test";
die();
}
Also, you may want to sanitize the post data with sanitize_text_field() or similar function.
Here is a relevant thread in WP StackExchange: how to pass parameters from jQuery ajax to a PHP function
I am trying to send form data using ajax. But there's an error in ajax operation and only "error" callback function is executed.
Here's what I tried:
$("#issue_submit").click(function (e) {
console.log("clicked on the issue submit");
e.preventDefault();
// Validate the form
var procurementForm = $("#it_procuremet_form");
if($(procurementForm).valid()===false){
return false;
}
// Show ajax loader
appendData();
var formData = $(procurementForm).serialize();
// Send request to save the records through ajax
var formRequest = $.ajax({
url: app.baseurl("itprocurement/save"),
data: formData,
type: "POST",
dataType: "json"
});
formRequest.done(function (res) {
console.log(res);
});
formRequest.error(function (res, err) {
console.log(res);
});
formRequest.always(function () {
$("#overlay-procurement").remove();
// do somethings that always needs to occur regardless of error or success
});
});
Routes are defined as:
$f3->route('POST /itprocurement/save', 'GBD\Internals\Controllers\ITProcurementController->save');
Also I added :
$f3->route('POST /itprocurement/save [ajax]', 'GBD\Internals\Controllers\ITProcurementController->save');
I tried returning a simple string to the ajax call at the controller class.
ITProcurementController.php :
public function save($f3)
{
echo 'Problem!';
return;
$post = $f3->get('POST');
}
But only 'error' callback is executed. I cannot locate what is wrong. Please Help.
You are specifying that you expect json back:
// Send request to save the records through ajax
var formRequest = $.ajax({
url: app.baseurl("itprocurement/save"),
data: formData,
type: "POST",
// Here you specify that you expect json back:
dataType: "json"
});
What you send back is not json:
echo 'Problem!';
return;
This is an unquoted string, which is not valid json.
To send valid json back, you would need:
echo json_encode('Problem!');
return;
You could also remove the dataType attribute, depending on your needs.
I have checked around, but can't seem to figure out how this is done.
I would like to send form data to PHP to have it processed and inserted into a database (this is working).
Then I would like to send a variable ($selected_moid) back from PHP to a JavaScript function (the same one if possible) so that it can be used again.
function submit_data() {
"use strict";
$.post('insert.php', $('#formName').formSerialize());
$.get('add_host.cgi?moid='.$selected_moid.');
}
Here is my latest attempt, but still getting errors:
PHP:
$get_moid = "
SELECT ID FROM nagios.view_all_monitored_objects
WHERE CoID='$company'
AND MoTypeID='$type'
AND MoName='$name'
AND DNS='$name.$selected_shortname.mon'
AND IP='$ip'
";
while($MonitoredObjectID = mysql_fetch_row($get_moid)){
//Sets MonitoredObjectID for added/edited device.
$Response = $MonitoredObjectID;
if ($logon_choice = '1') {
$Response = $Response'&'$logon_id;
$Response = $Response'&'$logon_pwd;
}
}
echo json_encode($response);
JS:
function submit_data(action, formName) {
"use strict";
$.ajax({
cache: false,
type: 'POST',
url: 'library/plugins/' + action + '.php',
data: $('#' + formName).serialize(),
success: function (response) {
// PROCESS DATA HERE
var resp = $.parseJSON(response);
$.get('/nagios/cgi-bin/add_host.cgi', {moid: resp });
alert('success!');
},
error: function (response) {
//PROCESS HERE FOR FAILURE
alert('failure 'response);
}
});
}
I am going out on a limb on this since your question is not 100% clear. First of all, Javascript AJAX calls are asynchronous, meaning both the $.get and $.post will be call almost simultaneously.
If you are trying to get the response from one and using it in a second call, then you need to nest them in the success function. Since you are using jQuery, take a look at their API to see the arguments your AJAX call can handle (http://api.jquery.com/jQuery.post/)
$.post('insert.php', $('#formName').formSerialize(),function(data){
$.get('add_host.cgi?moid='+data);
});
In your PHP script, after you have updated the database and everything, just echo the data want. Javascript will take the text and put it in the data variable in the success function.
You need to use a callback function to get the returned value.
function submit_data(action, formName) {
"use strict";
$.post('insert.php', $('#' + formName).formSerialize(), function (selected_moid) {
$.get('add_host.cgi', {moid: selected_moid });
});
}
$("ID OF THE SUBMIT BUTTON").click(function() {
$.ajax({
cache: false,
type: 'POST',
url: 'FILE IN HERE FOR PROCESSING',
data: $("ID HERE OF THE FORM").serialize(),
success: function(data) {
// PROCESS DATA HERE
},
error: function(data) {
//PROCESS HERE FOR FAILURE
}
});
return false; //This stops the Button from Actually Preforming
});
Now for the Php
<?php
start_session(); <-- This will make it share the same Session Princables
//error check and soforth use $_POST[] to get everything
$Response = array('success'=>true, 'VAR'=>'DATA'); <--- Success
$Response = array('success'=>false, 'VAR'=>'DATA'); <--- fails
echo json_encode($Response);
?>
I forgot to Mention, this is using JavaScript/jQuery, and ajax to do this.
Example of this as a Function
Var Form_Data = THIS IS THE DATA OF THE FORM;
function YOUR FUNCTION HERE(VARS HERE) {
$.ajax({
cache: false,
type: 'POST',
url: 'FILE IN HERE FOR PROCESSING',
data:Form_Data.serialize(),
success: function(data) {
// PROCESS DATA HERE
},
error: function(data) {
//PROCESS HERE FOR FAILURE
}
});
}
Now you could use this as the Button Click which would also function :3
The code I want to work:
$.ajax({
type: "POST",
url: "_Source/ajap/ajap.nlSrch.php",
data: { sndJson : jsonData },
dataType: "json",
processData: false,
success: function(html) {
$("#srchFrm").append(html);}
});
The code that works:
$.ajax({
type: "POST",
url: "_Source/ajap/ajap.nlSrch.php",
data: { sndJson : jsonData },
success: function(html) {
$("#srchFrm").append(html);}
});
Unfortunately when I send the first one my post data looks like this "Array ()" and when I use the later I get this "Array ( [sndJson] => [\"8\",\"3\",\"6\",\"7\"] )".
I know that there has to be a simple explanation but I haven't been able to figure it out.
Help please!
Try sending your data in a query string...
$.ajax({
type:"POST",
url:"_Source/ajap/ajap.nlSrch.php?json="+jsonData,
dataType:"json",
success: function(data) {
$("#srchFrm").append(data);}
error: function(xhr, ajaxOptions, thrownError)
{alert("Error!");}
});
You can use shorthand $.post instead of using low level ajax class --- because you don't need to advanced handling. So, this one will be great enough.
$(document.ready(function(){
$("#submit_button").click(function(){
$.post('php_script.php', {
// here's what you want to send
// important -- double quotes, 'cause It's evals as valid JSON
"var1" : "val1"
"var2" : "val2"
}, function (respond){
try {
var respond = JSON.parse(respond);
} catch(e){
//error - respond wasn't JSON
}
});
});
});
PHP code:
<?php
/**
* Here you can handle variable or array you got from JavaScript
* and send back if need.
*/
print_r($_POST); // var1 = val1, var2 = val2
?>
Back to your question,
Why my .ajax request doesn't work?
This is because JavaScript throws fatal error and stops further code execution.
You can catch and determine the error occasion, simply by adding
try {} catch(){} block to the statement you think may occur any error
When you specify dataType: json, jQuery will automatically evaluate the response and return a Javascript object, in this case an array. You're taking the result and adding it as html to #srchForm, so it does not make sense to convert it to a javascript object. Use dataType: html, or none at all.
http://api.jquery.com/jQuery.ajax/
The following examples above are not reusable. I am a huge fan of reuseable code. here is my solution.
Software design 101:
DRY Don't repeat your self. You should wrap your code into an object. This way you can call it from anywhere.
var Request = {
version: 1.0, //not needed but i like versioning things
xproxy: function(type, url, data, callback, timeout, headers, contentType)
{
if (!timeout || timeout <= 0) { timeout = 15000; }
$.ajax(
{
url: url,
type: type,
data: data,
timeout: timeout,
contentType: contentType,
success:function(data)
{
if (callback != undefined) { callback(data); }
},
error:function(data)
{
if (callback != undefined) { callback(data); }
},
beforeSend: function(xhr)
{
//headers is a list with two items
if(headers)
{
xhr.setRequestHeader('secret-key', headers[0]);
xhr.setRequestHeader('api-key', headers[1]);
}
}
});
}
};
Usage:
<script type="text/javascript">
var contentType = "applicaiton/json";
var url = "http://api.lastfm.com/get/data/";
var timeout = 1000*5; //five seconds
var requestType = "POST"; //GET, POST, DELETE, PUT
var header = [];
header.push("unique-guid");
header.push("23903820983");
var data = "{\"username\":\"james\"}"; //you should really deserialize this w/ a function
function callback(data)
{
//do logic here
}
Request.xproxy(requestType, url, data, callback, timeout, header, contentType);
</script>
I'm having trouble getting a response from my php jquery / json / ajax. I keep combining all these different tutorials together but I still can't seem to pull it all together since no one tutorial follow what I'm trying to do.
Right now I'm trying to pass two arrays (since there's no easy way to pass associative arrays) to my jquery ajax function and just alert it out. Here's my code:
PHP
$names = array('john doe', 'jane doe');
$ids = array('123', '223');
$data['names'] = $names;
$data['ids'] = $ids;
echo json_encode($data);
Jquery
function getList(){
$.ajax({
type: "GET",
url: 'test.php',
data: "",
complete: function(data){
var test = jQuery.parseJSON(data);
alert(test.names[0]);
alert("here");
}
},
"json");
}
getList();
In my html file all I'm really calling is my javascript file for debugging purposes. I know i'm returning an object but I'm getting an error with null values in my names section, and i'm not sure why. What am I missing?
My PHP file returns
{"names":["john doe","jane doe"],"ids":["123","223"]}
It seems to be just ending here
Uncaught TypeError: Cannot read property '0' of undefined
so my sub0 is killing me.
You could prob use the $.getJSON facade that jQuery provides, this will setup all the required ajax params for a standard JSON request:
$.getJSON('test.php', function(response) {
alert(response.names[0]); // john doe
});
However i think the route of the issue is that 1) your server may not be returning the correct response codes and/or the correct headers (ie: JSON data) - however the above method at least for the latter should force this conclusion.
See: http://api.jquery.com/jQuery.getJSON
It looks like the problem is that you're using the complete callback instead of the success callback:
function getList(){
$.ajax({
type: "GET",
url: 'test.php',
data: "",
success: function(data) { /* success callback */
var test = jQuery.parseJSON(data);
alert(test.names[0]);
alert("here");
}
},
"json");
}
getList();
From jQuery AJAX Docs:
success(data, textStatus, jqXHR)
A function to be called if the request succeeds. The function gets passed three arguments: The data returned from the server, formatted according to the dataType parameter; a string describing the status; and the jqXHR (in jQuery 1.4.x, XMLHttpRequest) object. As of jQuery 1.5, the success setting can accept an array of functions. Each function will be called in turn. This is an Ajax Event.
complete(jqXHR, textStatus)
A function to be called when the request finishes (after success and error callbacks are executed). The function gets passed two arguments: The jqXHR (in jQuery 1.4.x, XMLHTTPRequest) object and a string categorizing the status of the request ("success", "notmodified", "error", "timeout", "abort", or "parsererror"). As of jQuery 1.5, the complete setting can accept an array of functions. Each function will be called in turn. This is an Ajax Event.
jQuery wants to know what kind of data to expect as a response, otherwise it wont know how to parse it.
So, as has been said before here, you tell jQuery using the dataType = 'json' attribute.
function getList() {
$.ajax({
type: "GET",
url: 'test.php',
data: "",
dataType: "json",
success: function(data) {
console.log(data);
}
});
}
On top of this it is a good idea to have PHP present its content as json rather than html. You use the header for this by setting header('Content-type: application/json'); before any output in your PHP script. So:
$names = array('john doe', 'jane doe');
$ids = array('123', '223');
$data['names'] = $names;
$data['ids'] = $ids;
header('Content-type: application/json');
echo json_encode($data);
You should pass all parameters for ajax() function in single object. So, there should be "dataType" option. Also, if you set data type explicitly, jQuery will parse JSON data for you. Complete callback will receive parsed JavaScript object as parameter.
function getList() {
$.ajax({
type: "GET",
url: 'test.php',
data: "",
dataType: "json",
success: function(test) {
alert(test.names[0]);
alert("here");
}
});
}