So I am trying to learn AJAX requests, and in testing purposes, I am trying to use it in my personal project. I set up some test functions here and there, to test out how I can use AJAX in my project, and I got on an issue.
I'm making an AJAX call from script tags in my html, but it appears to just return all the html of that page.
AJAX call code is:
$.ajax({
URL: "<?php echo URLROOT;?>tasks/setcompleted",
type: "GET",
data: {id:'3'},
contentType: "application/json; charset=utf-8",
success: function(res){
console.log(res);
}
});
PHP Tasks controllers method setcompleted() code is just a simple echo of data passed from AJAX request via GET:
public function setcompleted(){
if(isset($_GET['id'])){
echo $_GET['id'];
}
}
I did some research, and found similar questions here, that suggested to check the URL that is passed to AJAX request. I did that, the URL that is passed in AJAX request is correct and works, if I manually write it into browser and add necessary parameters for the GET.
Can anyone suggest what am I doing wrong here?
Your function returns nothing.
public function setcompleted()
{
if(isset($_GET['id']))
{
$output = json_encode($_GET['id']);
}
return $output;
}
Related
I am trying to send a "POST" request to my backend PHP code, which resides in functions.php in Wordpress. I get a readystate:4 and bad request(400 status) error when I run the code, if I change the "POST" to "GET" it works.
This is not the first time I encounter this, but previously it has been in my spare time projects, this time it is for work. as mentioned above I can "solve" it by changing the method to "GET", but that is not the method you are supposed to use when you add to your database. I've tried to comment out the lines with "dataType", "contentType", and "processData", but it doesn't make a difference I still just get a bad request(400) error. I have several "GET"s that work fine elsewhere in functions.php and urlen is pointing directly to functions.php.
JS
function AddToTable(){
Data={"action":"CreateProduct","Password":Password.value,"Varenr":Varenr.value,"Produkttype":Produkttype.value,"Navn":Navn.value,"Billede":Billede.value,"BilledeAlt":BilledeAlt.value,"Farve":Farve.value,"Tykkelse":Tykkelse.value,"Pris":Pris.value};
jQuery.ajax({
type: "POST",
url: urlen,
dataType: "json",
contentType: "application/json",
processData: false,
data: JSON.stringify(Data),
success: successfunction,
error: errorfunction,
});
function successfunction(data){
RefreshTable();
}
function errorfunction(data, status) {
alert("error: "+status+" Content: " + JSON.stringify(data));
};
}
Functions.php
<?php
function CreateProduct(){
exit;
}
add_action('wp_ajax_CreateProduct','CreateProduct');
add_action('wp_ajax_nopriv_CreateProduct','CreateProduct');
?>
I expect it to send the data to the server function, so I can do more with it there. But I get a readystate:4 and state 400 errorcode.
UPDATED: to include the Functions.php part of the code.
I guess your data to be posted is malformed.
You have prepared it like
Data={"action":"CreateProduct","Password":Password.value,"Varenr":Varenr.value,"Produkttype":Produkttype.value,"Navn":Navn.value,"Billede":Billede.value,"BilledeAlt":BilledeAlt.value,"Farve":Farve.value,"Tykkelse":Tykkelse.value,"Pris":Pris.value};
Variables to be posted should not be in quotes so your code there should begin like
Data={action:"CreateProduct",Password: Password.value,Varenr: Varenr.value, .....
and so on
A GET request to a URL will simply tell you whether or not it exists, in basic terms. If you send a GET request to cnn.com it will respond with a 200, if send a GET to cnnbootyshort.com, you will get no response.
In your case, rather than using exit, you could try using die(), along with an echo of what you want to send back to the browser.
<?php
function CreateProduct(){
echo "200";
die();
}
add_action('wp_ajax_CreateProduct','CreateProduct');
add_action('wp_ajax_nopriv_CreateProduct','CreateProduct');
?>
And your JS
function successfunction(data){
console.log(data); // for debugging
RefreshTable();
}
function errorfunction(data, status) {
console.log(data); // for debugging
alert("error: "+status+" Content: " + JSON.stringify(data));
};
Alternatively you can use wp_die() if you want to use a Wordpress specific function. Here is some documentation regarding its use.
<?php
function CreateProduct(){
wp_die();
}
add_action('wp_ajax_CreateProduct','CreateProduct');
add_action('wp_ajax_nopriv_CreateProduct','CreateProduct');
?>
Hi all is it possible to call a an ajax call without using success?
ie from:
$.ajax({
type: "POST",
url: "/project/test/auto",
data: data,
success: function(msg){
//window.location.replace(msg);
}
});
to something simply like:
$.ajax({
type: "POST",
url: "/project/test/auto",
data: data,
});
To give reasoning - I have written some php to insert items into a database and then redirect to another page, I don't want to have to re-write the same code again to insert into the DB and then redirect in JS.
jQuery.post() documentation
$.post( "/project/test/auto", data );
I don't think that you can redirect using PHP within ajax call.
It would be best to create a function out of DB insert and then with ajax call a page that executes that function and returns success:true in json for example. After that, redirect in success part of your ajax call. You can later call the same DB insert function from within your PHP code.
First I am conface that I am Newbie to php,
I am using jquery(knockout js) at client side & PHP at server side. my code.
Client side: I am using knockout js(Javascript). to call my PHP service.
My Code:
self.VMSaveEditUserMode = function () {
try {
var params = { "ClientData": [controllerVM_.ClientID(), controllerVM_.VMList[0].ClientName(), controllerVM_.VMList[0].ShortName(), controllerVM_.VMList[0].Address(), controllerVM_.VMList[0].CreatedBy(), controllerVM_.VMList[0].CityName(), controllerVM_.VMList[0].PostalCode(), controllerVM_.VMList[0].ContactEmail(), controllerVM_.VMList[0].ContactPhone(), controllerVM_.VMList[0].IsCorporate()] };
$.ajax({
type: "POST",
url: URL + "index.php/phpService/SaveClient/" + controllerVM_.TokenKey(),
data: JSON.stringify(ko.toJS(params)),
contentType: "application/json",
async: true,
dataType: 'json',
cache: false,
success: function (response) {
},
error: function (ErrorResponse) {
if (ErrorResponse.statusText == "OK") {
}
else {
alert("ErrorMsg:" + ErrorResponse.statusText);
}
}
});
}
catch (error) {
alert("Catch:" + error);
}
}
Server Side My Code, I am using this PHP code to connect with DB.
PHP Code:
public function SaveClient($userToken)
{
$value = json_decode($Clientdata);
echo $value->ClientData[0];
}
*My Question *:
I am not clear on how to POST data in PHP ? I tried with $_POST[''] method as well as many more.
I am using eclipse as a php framework. so, not able to debug it when i post the data.Normally mode i am able to debug my code.but not from remotely.for that i made changes on php.ini file also.
How to get Response of Post Data on php code ?
How to debug via remote post ?
My Request sample:
suppose i use:
For, data: params, only at that time my request format is.
ClientData%5B%5D=4&ClientData%5B%5D=kamlesh&ClientData%5B%5D=KAM&ClientData%5B%5D=Junagadh&ClientData%5B%5D=me&ClientData%5B%5D=SANTA+ROSA&ClientData%5B%5D=76220&ClientData%5B%5D=kamlesh.vadiyatar%40gmail.com&ClientData%5B%5D=9998305904&ClientData%5B%5D=false
For, data: JSON.stringify(ko.toJS(params)),
{"ClientData":["4","kamlesh","KAM","Junagadh","me","SANTA ROSA","76220","kamlesh.vadiyatar#gmail.com","9998305904",false]}
If I understand correctly you need to create a PHP service which is able to receive REST-like requests from client.
In order to do thad you need to access raw POST data. In PHP its being done like this:
$ClientData = file_get_contents('php://input');
You can read more about php://input in the wrappers documentation.
Of course from the client's side the data need to be sent using the POST method and as raw data, i.e. as a string. You can obtain a string from object using JSON.stringify() which you already do.
If you pass an object, it will be converted to string internally by jQuery using query-string format. More on that in the jQuery documentation for $.ajax (the most importatnt options being data and processData).
Just pass the ajax data param as an object, don't convert it into JSON. Then in PHP use $_POST directly.
Use firebug or chrome dev tools to analyze the ajax request and see which data is sent
Use this simple jquery function to accomplish your task
$.ajax({
type: "POST",
url:"scripts/dummy.php",
data:"tbl="+table,
dataType:"json", //if you want to get back response in json
beforeSend: function()
{
},
success: function(resp)
{
},
complete: function()
{
},
error: function(e)
{
alert('Error: ' + e);
}
}); //end Ajax
in PHP use:
if(isset($_POST['ClientData'])){
$client_data = $_POST['ClientData']
}
now $client_data variable should contain the array.
For debugging purpose you can use php's built-in print_r() function. It's pretty handy.
here's is an example:
//make sure it's post request
if(isset($_POST)){
//now print the array nicely
echo "<pre>";
print_r($_POST);
echo "</pre>";
}
Within an ajax request how can the error callback be tested ? Is it possible to simulate a network connection error ?
$.ajax({
url: "myUrl",
type: 'post',
dataType : "json",
data : ({
myJson
}),
success : function(jsonSaveResponse) {
},
error: function (xhr) {
}
});
You could simply put an incorrect URL into the URL attribute of the AJAX call.
What I do is just turn my server off before I make the AJAX request, which will simulate the server not responding.
Remember it'll need to be switched back on before you can refresh for changes.
You have to stub the ajax request, and return a custom response that will trigger the error callback. You can do this easily with Javascript testing frameworks such as Jasmine.
If your URL is a PHP page, you can do something like this:
<?php
header("HTTP/1.0 404 Not Found");
exit();
//the rest of your code
You can simply comment it out later when you're done testing your error function.
Is it possible to have a piece of code or a function that does the following.
I would like for a javascript file to send a request to a different domain of mine with a variable. This webpage would check the variable against the database and return to the original javascript file the result of being either TRUE or FALSE
If you are sending requests between domains, you should have a look at http://api.jquery.com/jQuery.ajax/ with the dataType set to jsonp to load the response using a script tag.
More details on JSONP: https://stackoverflow.com/search?q=jsonp
I didn't know of JSONP and used a diffrent approach
$.ajax({
type: "GET",
crossDomain:true,
url: 'http://otherdomain/check.php',
success: function(data) {
// check.php response
}
});
and in check.php
<?php
$allowable_hosts = array('http://originaldomain','http://anotherdomain');
if (in_array($_SERVER['HTTP_ORIGIN'],$allowable_hosts))
header('Access-Control-Allow-Origin: *');
//echo "ok"; - your check code
?>