getting result value by using ajax - php

I am using Codeigniter platform.
here is the ajax
$.ajax({
type: 'POST',
url: '/account/findpassword/exec',
data: {
'user_email': val
},
cache: false,
async: false,
success: function(result){
if(result == 'FALSE')
alert('Email does not exist.');
else if(result == 'TRUE')
alert('We sent a new password to your email.');
else
alert('There is an error.');
}
});
here is controller
function exec()
{
$email = $this->input->post('user_email');
$this->load->model('account/findpassword_model', 'findpass');
$u_data = $this->findpass->get_user_data($email);
if($u_data == FALSE)
{
$result = 'FALSE';
echo $result;
exit;
}
else
{
$this->findpass->set_user_newpass($u_data['u_id'], $new_pass);
echo 'TRUE';
}
}
here is model
function get_user_data($email)
{
$query = 'SELECT u_id, u_name FROM '.T_USER_ACCOUNT.' WHERE u_email = "'.$email.'"';
$result = $this->db->query($query)->result_array();
if(count($result) > 0)
return $result[0];
else
return FALSE;
}
It supposes to say 'email doesn't exist.' message if there is no email address.
If an email address is exist, it supposes to say the second message.
When I checked the db server, this controller and model commands worked.
However, it only says 'There is an error.' message for all types.
I checked million times, but don't know why it doesn't say right words.

As far as I can tell, you only ever intend to return TRUE or FALSE back to the client. If you're not matching either of them, the question is, what is the value of result in your success handler?
console.log(result);
in your success function should show you what you're getting back from the server, and from there is should be easy to figure out why you're not matching TRUE or FALSE.

Related

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

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.😅

Confirming A Database Row was deleted via PHP in aJax/jQuery

I'm trying to figure out the best way to relay back to ajax if the POST data sent to the .php file successfully deleted the data from the database. I'm not sure what to phrase what I'm looking for, but essentially I thought about a 'if() { } else { }' statement perhaps, but I'm not sure how to send the data back correctly into the success:function. Here is the basic code below that ajax is using. The PHP file is just standard code for running a deletion via php/mysqli.
$.ajax({
url: "../ajax/modules/delete-from-db.php",
data:{},
type:'POST',
success:function(data){
//IF() {
//EXECUTE SUCCESS & REMOVE DIV
//} ELSE {
//GIVE NOTICE OF DELETION FAILURE
//}
}
});
So anyone have any ideas how I could accomplish this?
On your php. depends on what you are using, you can check if the query was successful or not. then you can add anything on your return statement that you could use on your ajax success funtion.
Example:
on the php side using PDO
$success = true;
try {
$conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
$sql = "DELETE FROM MyGuests WHERE id=3";
$conn->exec($sql);
} catch (PDOException $e) {
$success = false;
}
return json_encode([
'success' => $success
])
Then on ajax. you can use this
$.ajax({
url: "../ajax/modules/delete-from-db.php",
data:{},
type:'POST',
success:function(data){
IF(data.success) {
//EXECUTE SUCCESS & REMOVE DIV
} ELSE {
//GIVE NOTICE OF DELETION FAILURE
}
}});
Some changes in your php file. if delete query return success then return true or 1 otherwise false or 0.
$.ajax({
url: "../ajax/modules/delete-from-db.php",
data:{},
type:'POST',
success:function(data){
if(data == 1){
alert("success");
} else {
alert("error");
}
}
});
it depends on what you send back from your php script, i recommend JSON which you could format as such
{
status:"success",//or error if failed
message:"record was successfully deleted"
}
in the php script you could have a Boolean flag to check if the record was deleted eg:
if($deleteFlag){
$response = array('status'=>'success', 'message'=>'record was successfully deleted');
} else {
$response = array('status'=>'error', 'message'=>'could not delete record!');
}
header('Content-type: application/json');
echo json_encode($response);

Send custom error message in Ajax error in codeigniter

I am currently using Codeigniter and working on CRUD operation in one HTML form.
I am using Ajax for this create/read/update.
I have also used Transaction Management as best practices in a database query.
The Problem:
(1) I want separate Error message for Update and Insert Error. Which I did not get in the ajax error section.
(2) I have used the debugger to debug this problem but I do not get it proper.
Here is the Code of my controller.
Controller:
public function save_candidate_experience() {
$this->db->trans_start();
if(empty($postId))){
$query_staus = $this->test_model->insert_function( $data );
if($query_staus != TRUE) {
$msg = array('message'=>'Failed To Save! Erroe Wile Inserting.');
} else{
$msg = array('message'=>'Successfully Insert');
}
} else {
$query_staus2 = $this->test_model->update_function( $data );
if($query_staus2 != TRUE) {
$msg = array('message'=>'Failed To Save! Erroe Wile Updateing.');
}else{
$msg = array('message'=>'Successfully Updated');
}
}
if ($this->db->trans_status() === FALSE)
{
$this->db->trans_rollback();
echo json_encode ($msg);
}
else
{
$this->db->trans_commit();
echo json_encode ($msg);
}
}
This is the Model Code:
public function insert_function() {
$this->db->insert('table_name', $data);
if($this->db->affected_rows() > 0){
return TRUE;
} else{
return FALSE;
}
}
public function update_function() {
$this->db->where('id', $id);
$this->db->update('test_table', $data);
if($this->db->affected_rows() > 0){
return TRUE;
} else{
return FALSE;
}
}
Ajax Code in my view.
$.ajax({
type: 'POST',
async: true,
dataType: 'Json',
url: save_experience,
data: $('#candidata_exp_form').serialize(),
success: function (response) {
//doing something with ajax success
},error: function (msg)
{
alert(msg.message);
// I know I can give alert message here but.
//I don't want to give alert message here.
//I want to indicate user that the error occure whilt insert or update seperately.
}
});
You have to understand 2 things.
Form validation error and ajax error is different.
Ajax error - Is not validation error.
It means, suppose you call a function and there is php error in that function, or 404 error. At that time .error() will be called.
Ajax Success - No error(No syntax error).
So now you should write the logic in ajax success().
$.ajax({
type: 'POST',
async: true,
dataType: 'Json',
url: save_experience,
data: $('#candidata_exp_form').serialize(),
success: function (response) {
alert(response.message);// this will alert you the message which you have put in `json_encode()`
}
});

PHP json_encode for JQuery

I'm working on a method in my class that outputs error messages for both ajax and regular post request. The PHP part works fine, but the json part doesn't seem to. Here is my method:
public $formError = false;
public $phpErrors = '';
public $jsonErrors = array();
// ------------------------------------------------------------
// ERROR PROCESSING
// ------------------------------------------------------------
private function responseMessage($bool, $msg) {
$return['error'] = $bool;
$return['msg'] = $msg;
if (isset($_POST['plAjax']) && $_POST['plAjax'] == true) {
$this->jsonErrors[] = $return;
} else {
foreach ((array) $msg as $key => $value) {
$this->phpErrors .= $msg;
}
}
$this->formError = true;
}
I think, the problem is that no matter if it is just a single error message or multiple, the json object is always wrapped with square brackets. I couldn't find anything online that would show an example. The messages look like this:
SINGLE ERROR:
[{"error":true,"msg":"Error message 1 ..."}]
MULTIPLE ERRORS:
[{"error":true,"msg":"Error message 1 ..."},{"error":true,"msg":"Error message 2 ..."}]
Firebug shows 200 OK but my JQuery does not output any messages:
$.ajax({
type: 'POST',
url: plSubmitUrl,
data: plFormData,
dataType: 'json',
cache: false,
timeout: 10000,
success: function (data) {
if (data.error === true) {
// display error message
plResponse(data.msg, true);
...
} else if (data.error === false) {
// display success message
plResponse(data.msg, true);
...
}
},
When I was showing only one message at a time, the JQuery was working fine.
Any help would be great. Thanks
Dont use strict equality operator === since from PHP you are actually sending string, instad of:
if (data.error === true)
Use:
if (data.error == true)
Since multiple error contains more than one index, so it might not picking data.
check length for more than error.
$.ajax({
type: 'POST',
url: plSubmitUrl,
data: plFormData,
dataType: 'json',
cache: false,
timeout: 10000,
success: function (data) {
var x = data.length;
if(x == 1){
if (data.error === true) {
// display error message
plResponse(data.msg, true);
...
} else if (data.error === false) {
// display success message
plResponse(data.msg, true);
}
}else{
jQuery.each(data,function(key,val){
// do whatever you need
}
}
header('Content-Type: application/json');
Add this right before echoeing in your PHP script to let jquery know it has to parse the whole string as JSON.
And use "==" to compare instead of "==="

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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