Ajax post does not give value to php file, post becomes get - php

I have this ajax function for login.
Edit: I just noticed that this server runs php7 while other server where the login does work uses php5. What has changed in php that this script doesn't work anymore?
Edit 2: Looks like the server request method isn't post but changed to get, why?
Solution: needed to remove the .php from url: "./ajaxcall/login.php", because I use pretty url htaccess.😅
var InName = $('#InName').val();
var InPass = $('#InPass').val();
alert(InName);
$.ajax({
type: "POST",
url: "./ajaxcall/login.php",
dataType: "json",
data: {InName:InName, InPass:InPass},
error: function (request, error) {
console.log(arguments);
alert("Inlog Can't do because: " + error);
},
success : function(data){
if (data.code == "200"){
$("#InErEr").html(data.msg);
//window.location.reload(true);
} else {
$("#InErEr").html(data.msg);
$('.lds-dual-ring').animate({opacity: 0}, 300);
}
}
});
On the alert(InName); I get the correct value of the username. But when I check in my php file $_POST['InName'] it is empty.
Part of php file
include('../config.php');
if(empty($_POST['InName'])) {
$Ierror = 'Username is required.';
}
if($_POST['InPass'] == '') {
$Ierror = 'Password is required.';
}
$username = $_POST['InName'];
$passwordL = $_POST['InPass'];
// count user in between //
if($Inlognumber_of_rows == 0) {
$Ierror = 'Username not found.';
} else {
// password check //
if(password_verify($salty_pass, $hashed_password)) {
} else {
$Ierror = 'Password incorrect.';
}
}
if ($Ierror == '') {
// do login //
} else {
$showerror = '<span style="color:#F00;">'.$Ierror.$username.$passwordL.$_POST['InName'].$_POST['InPass'].'</span>';
echo json_encode(['code'=>404, 'msg'=>$showerror]);
exit;
}
In the return message, $showerror I only get, Username not found, without the posted values. So the login is not working because of empty values? User is also present in the database of course. I also don't get the empty $_POST errors. So to cap up, in javascript I get the correct value for InName but not in php.

You are close but your error catch is not correct ... try this (Jquery):
var InName = 'something';
var InPass = 'morething';
$.post("./ajaxcall/login.php", {
InName: InName,
InPass: InPass
}, function(data, status) {
console.log(data, status);
}).done(function() {
alert("second success");
})
.fail(function() {
alert("error");
})
.always(function() {
alert("finished");
});
on your php file just do print_r($_POST); and you will receive this in your console...:
Array
(
[InName] => something
[InPass] => morething
)
success
Basically you were trying to print the error where you should have consoled log the request.responeText...
A good trick to know if posts arrived to the php even if the console.log won't show is doing this in the php file:
<?php
print_r($_POST) ;
$newfile = fopen('newfile.txt','a');
fwrite($newfile,json_encode($_POST));
fclose($newfile);
This will print and also store on a local file the post data....

Solution: needed to remove the .php from url: "./ajaxcall/login.php", because I use pretty url htaccess.😅

Related

AJAX: How to send back a success/error message

This is my first baby step with Ajax and I'm already struggling. I have a request that inserts into the DB but my code for the moment is behaving like all the requests are successful, but I want to be able to handle the errors when updating the DB. I want to alert() a success/error message depending on the MYSQL response.
My Ajax call:
$("a.bgbtb").click(function(){
var btnid = $(this).attr("id").split('newbudbtn-')[1];
var newbudget = $("INPUT[id=newbud-"+btnid+"]").val();
var platform = $("span#"+btnid).text();
$.ajax({
url:"campbdgtedit.php",
method:"POST",
data:{platform:platform, btnid:btnid, newbudget:newbudget},
success:function(data){
myAlertTop();
}
});
});
campbdgtedit.php:
$query = "INSERT INTO campaigns (camp_budget, camp_campaignid) VALUES ('".$_POST['newbudget']."', '".$_POST['btnid']."')";
if ($conn->query($query) === TRUE) {
echo "Success<br/>";
} else {
echo "Error: " . $query . "<br>" . $conn->error;
}
How can I catch if there is an error in the query and handle my alerts accordingly? I've tried many solutions I've found here but I can't seem to make them work.
I would recommend returning JSON from your PHP code, this can be interpreted directly as an object in the JavaScript if you use dataType: 'json' on your ajax call. For example:
if ($conn->query($query) === TRUE) {
echo json_encode(array('success' => true));
} else {
echo json_encode(array('success' => false,
'message' => "Error: Insert query failed"
)
);
}
Note that in general it's not secure to pass back query details and connection errors to the end user, better to pass back a generic message and log the actual error to a file or other location.
In your JavaScript:
$("a.bgbtb").click(function(){
var btnid = $(this).attr("id").split('newbudbtn-')[1];
var newbudget = $("INPUT[id=newbud-"+btnid+"]").val();
var platform = $("span#"+btnid).text();
$.ajax({
url:"campbdgtedit.php",
method:"POST",
data:{platform:platform, btnid:btnid, newbudget:newbudget},
dataType: 'json',
success:function(data){
if (data.success) {
// all good!
myAlertTop();
}
else {
// problems
alert(data.message);
}
}
});
});
If i understand correctly, you need to analyze the "echo" from the php side in the JS side in order to alert the appropriate error.
Use the "data" that is returned here:
success:function(data){
myAlertTop();
}
and do the following:
success:function(data){
myAlertTop(data);
}
function myAlertTop(replyfromPHPside)
{
if (replyfromPHPside =="abc")
{
alert('..');
}
else
{
...
}
}
I believe the best way is to echo out a json-string from PHP and "catch" the response in javascript like this:
campbdgtedit.php:
$query = "INSERT INTO campaigns (camp_budget, camp_campaignid) VALUES ('".$_POST['newbudget']."', '".$_POST['btnid']."')";
$arr = array();
if ($conn->query($query) === TRUE) {
$arr['response'] = true;
} else {
$arr['response'] = false;
}
echo json_encode($arr);
Javascript:
$("a.bgbtb").click(function(){
var btnid = $(this).attr("id").split('newbudbtn-')[1];
var newbudget = $("INPUT[id=newbud-"+btnid+"]").val();
var platform = $("span#"+btnid).text();
$.ajax({
url:"campbdgtedit.php",
method:"POST",
data:{platform:platform, btnid:btnid, newbudget:newbudget},
success:function(data){
if (data.response == 'true') {
alert('DB success');
}
else {
alert('DB fail');
}
}
});
});

Ajax form validation without caching

I am building an inline code validation for a web form. With my current script, When a bad code is entered and it is being corrected (same length), POST data is not using the latest value. For example, I first enter "QFFE" and then correct it to "QFFF", but the latter is not stored in $_POST. See Firebug extract ("QFFF" passed but "QFFE" processed):
Here is the code (AJAX part):
var data = {};
$(document).ready(function() {
$('input[type="submit"]').on('click', function() {
resetErrors();
var url = 'process.php';
$.each($('form input, form select'), function(i, v) {
if (v.type !== 'submit') {
data[v.name] = v.value;
}
}); //end each
console.log(data);
$.ajax({
dataType: 'json',
type: 'POST',
url: url,
data: data,
cache: false,
success: function(resp) {
if (resp === true) {
//successful validation
alert("OK, processing with workflow...");
// $('form').submit();
return false;
} else {
$.each(resp, function(i, v) {
console.log(i + " => " + v); // view in console for error messages
var msg = '<label class="error" for="'+i+'">'+v+'</label>';
$('input[name="' + i + '"], select[name="' + i + '"]').addClass('inputTxtError').after(msg);
});
var keys = Object.keys(resp);
$('input[name="'+keys[0]+'"]').focus();
console.log('QD: error val');
}
return false;
},
error: function() {
console.log('there was a problem checking the fields');
}
});
return false;
});
});
function resetErrors() {
$('form input, form select').removeClass('inputTxtError');
$('label.error').remove();
}
And here my PHP script (process.php):
<?php
//List of accepted codes
$code_list = array("QWOLVE", "QFFF");
session_start();
if(isset($_POST)){
if (empty($_POST['promo_code'])) {
$_SESSION['errors']['promo_code'] = 'Please enter a promo code to access the beta site';
}elseif(! in_array($_POST['promo_code'], $code_list)){
$_SESSION['errors']['promo_code'] = $_POST['promo_code']." is not a valid code";
unset($_POST);
}
if(count($_SESSION['errors']) > 0){
//This is for ajax requests:
if(!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest') {
echo json_encode($_SESSION['errors']);
// header('Location: redirect.php');
exit;
}
//This is when Javascript is turned off:
echo "<ul>";
foreach($_SESSION['errors'] as $key => $value){
echo "<li>" . $value . "</li>";
}
echo "</ul>";exit;
}else{
//Form validation successful - process data here:
echo json_encode(true);
}
}
?>
How can I make sure that the process.php is always using the latest form data?
I'm not sure why you store errors in the the session, but since you don't seem to clear that session, the next time you call the POST method $_SESSION['errors'] will still have the previous error in it (QFFE), hence the output.

How can I get form data to php via jquery

I have some validation code something like this -
if ($('#address').val()) {
if ($('#address').val().length > 60 || $('#address').val().length < 5) {
errorMessage += "Length of Your Address must be between 5 and 60.\n";
valid = false;
} else {
var rege = /^[a-zA-Z]([0-9a-z_\s])+$/i;
if(!rege.test($('#address').val())){
errorMessage += "Please enter Valid Address.\n";
valid = false;
} else {
var address = $('#address').val();
//alert ('My address is : ' + address);
}
}
} else {
errorMessage += "please enter your address\n";
valid = false;
}
My problem is how I get this value to php. My value have here - var address = $('#address').val();
I need to check this value again in PHP and need to echo the value on the same page.
I use it something like this -
if( !valid && errorMessage.length > 0){
alert(errorMessage);
} else {
$.ajax({
type: "POST", // HTTP method POST or GET
url: "demo2.php", //Where to make Ajax calls
data: {
myname: name,
myaddress: address,
myemail: email
}
});
}
demo2.php page is the same page which my form have.
Above of my page I tried to print $_POST array but nothing display there.
echo '<pre>', print_r( $_POST).'</pre>';
Hope someone will help me.
Thank you.
First put a check in demo2.php for if POST is set
if( isset($_POST['myaddress']) ) {
// your echo statement here
}
Then you just need to add some code to the jquery handle the response.
if( !valid && errorMessage.length > 0){
alert(errorMessage);
} else {
$.ajax({
type: "POST", // HTTP method POST or GET
url: "demo2.php", //Where to make Ajax calls
data: {
myname: name,
myaddress: address,
myemail: email
}
}).done(function(response) {
$('#address-display-div').html(response);
});
}
replacing #address-display-div with whatever selector you're going to display the address in.
Request page:
var request =$.ajax({
type: "POST",
url: "demo2.php",
data: {myname: name,myaddress: address,myemail: email}
dataType: "json",
success: function (a) {
alert(a[0]);
}
});
request.fail(function(jqXHR, textStatus){alert('Ajax Error: '+ textStatus);});
And in your php file:
<?php
if(isset($_POST['myname']) && isset($_POST['myaddress']) && isset($_POST['myemail'])){
[do your stuff]
echo json_encode(array(0=>'<pre>'.print_r( $_POST,true).'</pre>'));
}
else
echo json_encode(array(0=>'Missed Variable'));
exit();
?>
Otherwise can you also post your php page?

Echoed Javascript appearing in alert instead of processing

I have created a registration system that uses AJAX to process the form so that I can return false. The relevant js is the top block of code. I pass this data to join.php, which sends it to the database. I run a check in join.php to make sure that nobody with a duplicate email has already signed up. As you can see, if the email already exists, I want to insert a message using javascript. Instead of reading the script tags, it simply pastes them into my alert in plaintext...so my alert has the datastring and then actually says the code <script>...</script>. How can I get this js to process instead?
Javascript:
$(".submit").click(function() {
var dataString = {
school : $("#school").val(),
studentEmail : $("#studentEmail").val(),
studentPassword : $("#studentPassword").val(),
parentEmail : $("#parentEmail").val(),
parentPassword : $("#parentPassword").val(),
studentFirstName : $("#studentFirstName").val(),
studentLastName : $("#studentLastName").val(),
studentPhone : $("#studentPhone").val(),
parentFirstName : $("#parentFirstName").val(),
parentLastName : $("#parentLastName").val(),
parentPhone : $("#parentPhone").val()
};
$.ajax({
type: "POST",
url: "join.php",
data: dataString,
success: function(data) {
alert ("data sent: "+ data);
}
});
return false;
}
});
join.php
if($_POST) {
$school = mysql_real_escape_string($_POST['school']);
$studentEmail = mysql_real_escape_string($_POST['studentEmail']);
$parentEmail = mysql_real_escape_string($_POST['parentEmail']);
$studentFirstName = mysql_real_escape_string($_POST['studentFirstName']);
$studentLastName = mysql_real_escape_string($_POST['studentLastName']);
$studentPhone = mysql_real_escape_string($_POST['studentPhone']);
$parentFirstName = mysql_real_escape_string($_POST['parentFirstName']);
$parentLastName = mysql_real_escape_string($_POST['parentLastName']);
$parentPhone = mysql_real_escape_string($_POST['parentPhone']);
$check = mysql_query("SELECT studentEmail FROM clients WHERE studentEmail = '{$studentEmail}';");
$num = mysql_num_rows($check);
if (($num) == 0) {
$sql = "INSERT INTO clients ".
"(`studentEmail`, `studentPassword`, `parentEmail`, `parentPassword`, ".
"`studentFirstName`, `studentLastName`, `studentPhone`, `parentFirstName`, ".
"`parentLastName`, `parentPhone`, `school`) ".
" VALUES ('$studentEmail', '$studentPassword', '$parentEmail', ".
"'$parentPassword', '$studentFirstName', '$studentLastName', ".
"'$studentPhone', '$parentFirstName', '$parentLastName', '$parentPhone', '$school')";
$result = mysql_query($sql);
if ($result) {
echo "Database query successful!";
}
else {
die("Database query failed: " . mysql_error());
}
include "emails/signUp.php";
}
else {
echo 'FAIL
<script>
$(".formErrorMessage").html("Email already exists");
</script>';
}
}
The alert shows your script block because you've got this in your success handler:
alert ("data sent: "+ data);
Data is going to be whatever text you output in your PHP. If you want to have variable behavior based on whether your request was successful or not, I'd recommend that your PHP returns JSON containing a success flag and the message. Your JavaScript callback would then look like this:
function(data) {
if (data.success) {
alert ("data sent: "+ data.message);
} else {
$(".formErrorMessage").text(data.message);
}
}
Your PHP should then change your content-type to JSON:
header('Content-Type: application/json');
... and your echos would change to something like this:
echo '{"success": false, "message": "Email already exists."}';
Your server call shouldn't be returning raw HTML. Should return JSON that contains all the status information the server needs to handle things. i.e. in the usual case:
{'success': true}
or
{'success': false, 'emailAlreadyExists': true, 'msg': 'Email Already Exists'}
of
{'success': false, 'msg': 'Database query failed: blahblahMySqlError'}
Then your client JS should handle it...
$.ajax({
type: "POST",
url: "join.php",
data: dataString,
success: function(data) {
if(data.success) {
alert ("success!");
}
else{
alert("error: " + data.msg);
if(data.emailAlreadyExists){
$(".formErrorMessage").html("Email already exists");
}
}
}
});
from php, you have give formatted status responses
on success:
echo '{"status":"success", message:"Database query successful!"}';
if account already exists:
echo '{"status":"failed", message:"Email already exists"}';
So you will be able to identify this in JavaScript callback function
$.ajax({
type: "POST",
url: "join.php",
data: dataString,
success: function(data) {
if(status.error == "failed"){
$(".formErrorMessage").html(data.message);
}
}
});
This is the best way to do it. Or if you just want to execute a string received from php, you can use eval
success: function(data) {
eval(data);
}
In that case there is no need of script tags in response, only the Javascript statement that has to be executed.

php validation using jquery and ajax

i have a jquery ajax form.
i have validation at server side for repeated username and email ID.
which works fine without jquery/ajax.
in my php code i have used die() to return if any error occurs. my main problem is at ajax
here is the code
$(document).ready(function () {
$("form#regist").submit(function () {
var str = $("#regist").serialize();
$.ajax({
type: "POST",
url: "submit1.php",
data: $("#regist").serialize(),
success: function () {
$("#loading").append("<h2>you are here</h2>");
}
});
return false;
});
});
The success function works properly. if my data is valid then it is added in the db, if my data is repeated then it is not added in the db. Now what i want to know is how do i return the error from my php file and use it at success event. Thanks in advance..
edit : this is how my php script looks
$query = "SELECT username from userdetails WHERE username = '$username'";
$q = mysql_query($query) or die("error" . mysql_error());
$numrows = mysql_num_rows($q);
if($numrows > 0)
{
die("username already exixt");
//should i put something like this
//$error = "username already exists";
//return $error; --->> i am not sure about this..
}
thanks in advance
Php side:
if($numrows > 0)
{
echo "username already exist";
}
Javascript side:
success: function(msg)
{
if(msg == 'username already exist') alert(msg);
}
But this is so crude, If you plan to develop this further try to read some articles on JSON, so you can use json to communicate to server side. And also you should try to use some default error controlling, like return an array with php:
echo json_encode(array('error' => true, 'notice' => 'username exists'));
Then on the javascript side (jquery), use json ajax request and always check if error variable is true or not, if it is maybe you can use a default function for error controlling.
Hope this helped.
In the function definition which you have done like:
success: function(){
introduce a parameter like: success: function(retVal){
Now in the function you can check for the value of retVal.
Say, you return from your PHP script, "successful" for success case and "this email exists" for failure.
Now you can directly compare this here and do whatever you want to, like:
if(retVal == 'this email exists')
{
window.alert('please re-enter the email, this record exists!');
}
and so on...
Hope this helps.
$(document).ready(function () {
$("form#regist").submit(function () {
var str = $("#regist").serialize();
$.ajax({
type: "POST",
url: "submit1.php",
data: $("#regist").serialize(),
success: function (msg) {
alert(msg);
}
});
return false;
});
});
Here from server side send the message and show it, how i have shown it :)

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