I am having problem with this javascript function.
If I want to submit a form if I do this below it works:
function submitform()
{
var QandAO = document.getElementById("QandA");
QandAO.submit();
}
If I want to add a row into a DB table using AJAX to navigate to the page which INSERTS VALUES, then the code below works:
function submitform()
{
var fieldvalue = $("#QandA").val();
$.post("insertQuestion.php", $("#QandA").serialize ,function(data){
alert("data");
});
}
So I thought to be able to submit the form and add a row into the database, if I do this code below then it should work but it doesn't. It submits the form but does not add a row in the database. How can this code be fixed so it submits the form and also add a row in DB? Below is the code
function submitform()
{
var fieldvalue = $("#QandA").val();
$.post("insertQuestion.php", $("#QandA").serialize ,function(data){
alert("data");
});
var QandAO = document.getElementById("QandA");
QandAO.submit();
}
InsertQuestion.php looks like this below:
<?php
session_start();
$username="xxx";
$password="xxx";
$database="xxx";
mysql_connect('localhost',$username,$password);
#mysql_select_db($database) or die( "Unable to select database");
$insertquestion = array();
$insertquestion[] = "' ". mysql_real_escape_string( $_POST['id'] ) . "'";
$questionsql = "INSERT INTO Question (SessionId)
VALUES (" . implode('), (', $insertquestion) . ")";
mysql_query($questionsql);
mysql_close();
?>
I think the problem is that the second part of your code (the form submit) cuts off the first part before it's complete. Give the AJAX call a chance to finish by putting the form submit inside the AJAX callback:
function submitform()
{
var fieldvalue = $("#QandA").val();
$.post("insertQuestion.php", $("#QandA").serialize ,function(data){
alert("data");
var QandAO = document.getElementById("QandA");
QandAO.submit();
});
}
Related
I am building a comment system in which there is features like: delete main post, delete comment, delete reply, edit main post, edit comment, edit reply, Read more/Read less for post that is >250 character. So i am now at the stage of making the edit for reply post to a comment, everything else is working perfectly except this one, when i click i need to see reply post with Read More/Read Less feature, so to make this happen after ajax response i needed to paste the javascript codes for this feature in the php script which edit the reply, so when i make .html(data) i see the javascript codes inside the span which i want the response to be shown ! please help ! i made the same script for comment and same way placing javascript code in the php page that edited the comment but i do not see the javascript lines ! below are pictures that shows what is happening and my script next :
// THIS TAKES CARE OF THE EDIT FEATURE OF THE REPLY ON BOARD_COMMENT PAGE
$(document).on("click", ".board_reply_edit_button", function() {
// this will select the form in which is contained the edit button
var editBoardButtonAttribute = $(this).attr("id");
var editBoardButtonIdArray = editBoardButtonAttribute.split("-");
var editBoardButtonId = editBoardButtonIdArray[0];
$("#"+editBoardButtonId+"-formBoardReplyEdit").toggle();
$("#"+editBoardButtonId+"-spanBoardReplyEdit").toggle();
// if the cancel button is clicked, this happens
$(document).on("click", ".board_cancel_button", function() {
// this will select the form in which is contained the edit button
var cancelBoardAttribute = $(this).attr("id");
var cancelBoardButtonIdArray = cancelBoardAttribute.split("-");
var cancelBoardButtonId = cancelBoardButtonIdArray[0];
$("#"+cancelBoardButtonId+"-formBoardReplyEdit").hide();
$("#"+cancelBoardButtonId+"-spanBoardReplyEdit").show();
});
// if the edit button is clicked we send this ajax call
$(document).on("click", ".board_edit_save_button", function(e) {
e.preventDefault();
// this will select the form in which is contained the edit button
var saveBoardAttribute = $(this).attr("id");
var saveBoardButtonIdArray = saveBoardAttribute.split("-");
var saveBoardButtonId = saveBoardButtonIdArray[0];
var editBoardTextareaVal = $("#"+saveBoardButtonId+"-textareaBoardReplyEdit").val();
url = "widgets/edit_board_comment_reply.php";
if (editBoardTextareaVal === "") {
CustomSending("This post can't be left blank")
setTimeout(function () {
$("#sending_box").fadeOut("Slow");
$("#dialogoverlay").fadeOut("Slow");
}, 2000);
// this makes the scroll feature comes back
setTimeout(function(){
$("body").css("overflow", "auto");
}, 2001);
} else {
$.ajax({
url: url,
method: "POST",
data: {
reply_id: saveBoardButtonId,
board_reply_textarea: editBoardTextareaVal
},
beforeSend: function() {
CustomSending("Sending...");
},
success: function(data){
$("#sending_box").fadeOut("Slow");
$("#dialogoverlay").fadeOut("Slow");
// this makes the scroll feature comes back
$("body").css("overflow", "auto");
$("#"+saveBoardButtonId+"-spanBoardReplyEdit").html(data); //// THIS IS THE KEY LINE
$("#"+saveBoardButtonId+"-formBoardReplyEdit").hide();
$("#"+saveBoardButtonId+"-spanBoardReplyEdit").show();
}
});
}
});
});
this is the edit_board_comment_reply.php file :
<?php
require_once '../includes/session.php';
require_once '../includes/functions.php';
require_once '../includes/validation_functions.php';
if(isset($_POST['reply_id'], $_POST['board_reply_textarea'])) {
$reply_id = (int)$_POST['reply_id'];
$board_reply_textarea = mysql_prep($_POST['board_reply_textarea']);
// INSERT into table
$query = "UPDATE board_comment_reply_table ";
$query .= "SET reply = '$board_reply_textarea' ";
$query .= "WHERE reply_id = $reply_id";
$result = mysqli_query($connection, $query);
// now we select the updated board post
$query2 = "SELECT * FROM board_comment_reply_table ";
$query2 .= "WHERE reply_id = $reply_id ";
$result2 = mysqli_query($connection, $query2);
confirm_query($result2);
$result_array = mysqli_fetch_assoc($result2);
}
echo nl2br($result_array['reply']);
?>
<script>
// This takes care of the board comment Continue Reading feature ---------------------------------------------------------
$(".reply_content_span").each(function(){
var boardReplyPostThis = $(this);
var boardPostText = $(this).text();
var boardPostLength = boardPostText.length;
var boardIdAttribute1 = $(this).attr("id");
var boardIdAttributeArray1 = boardIdAttribute1.split("-");
var boardPostId = boardIdAttributeArray1[0];
var boardPostUserId = boardIdAttributeArray1[1];
if(boardPostLength > 250) {
var boardPostTextCut = boardPostText.substr(0, 250);
boardReplyPostThis.text(boardPostTextCut+"...");
boardReplyPostThis.append('<a class="board_read_more_link board_reply_read_more" id="'+boardPostId+'-readMoreComment">Read More</a>');
} else {
boardReplyPostThis.text(boardPostText);
}
$("body").on("click", ".board_reply_read_more", function(e){
e.preventDefault();
boardReplyPostThis.text(boardPostText);
boardReplyPostThis.append('<a class="board_read_more_link board_reply_read_less">Read Less</a>');
});
$("body").on("click", ".board_reply_read_less", function(e){
e.preventDefault();
boardReplyPostThis.text(boardPostTextCut+"...");
boardReplyPostThis.append('<a class="board_read_more_link board_reply_read_more">Read More</a>');
});
});
</script>
This is the html code :
<span class="comment_content_span" id="<?php echo $board_comment_id_number;?>-spanBoardCommentEdit"><?php echo nl2br($board_comment_text);?></span>
<form action="" method="post" class="board_comment_edit_form" id="<?php echo $board_comment_id_number;?>-formBoardCommentEdit">
<textarea rows="2" name="board_comment_edit_textarea" class="board_comment_edit_textarea" id="<?php echo $board_comment_id_number;?>-textareaBoardEdit"><?php echo $board_comment_text;?></textarea>
<input type="submit" value="Edit" class="board_edit_save_button" id="<?php echo $board_comment_id_number;?>-saveBoardCommentEdit"/>
<input type="button" value="Cancel" class="board_cancel_button" id="<?php echo $board_comment_id_number;?>-cancelBoardCommentEdit"/>
</form>
Solution found !
instead of the javascript between the script tags, I added this line in the edit_board_comment_reply.php
<script src="js/board.js"></script>
It seems that the appended javascript exitsts in "data" which is send back from your php script. First of all you should try to define the "dataType" property of your ajax-post because the output is preprocessed by jquery depending on that property.
After that you can try to grab just the content-division from your resonse-html and append that instead of the whole result.
For example like this $(body).append($(data).find('#contentID')).
Trying to get together the sign up validation with PHP and Ajax. Not sure what is wrong but the submission does not happen. If I don't add the validation part everything looks fine and i am able to insert the data to mysql.
<script type="application/javascript">
$("#submit").submit(function (event) {
event.preventDefault();
var datatopost = $(this).serializeArray();
console.log(datatopost);
$.ajax({
url: "signupregister.php",
type: "POST",
data: datatopost,
success: function (data) {
if (data) {
$("#signupmessage".html(data));
}
},
error: function () {
$("#signupmessage").html("<div class = 'alert alert-danger'></div>")
}
});
});
</script>
_
<?php
session_start();
include('mysqlconnection.php');
include('index.php');
function customError($errors, $errorslevel)
{
}
set_error_handler("customError", E_ALL);
if (isset($_POST['submit'])) {
if ($_POST($first_name) == "") {
$errors .= $first_nameError;
} else {
$first_name =
filter_var($_POST["first_name"], FILTER_SANITIZE_STRING);
}
}
if ($errors) {
$resultMessage = '<div class="alert alert-danger">' .
$errors . '</div>';
echo $resultMessage;
exit;
}
$first_nameError = '<p>first name required</p>';
First up, in your validation PHP script, you won't need to include 'index.php'
Try redirecting the form to an empty page where you only include your validation data, while setting a session variable for the first error encountered.
At the end of your validation, if your error variable contains an error, you can redirect to the form and display your said error at a convenient location. Keep in mind you will have to save form data in session variables if you want to preserve all user input (thus removing the hassle of refilling the form over and over again).
If it doesn't, you can proceed to insert the data in your db then redirect to your desired landing page.
Here's a sample code based on your input:
<?php
session_start();
if(isset($_POST['submit'])){
$_SESSION['fname'] = $_POST['fname'];
//so on for your other variables
if($_SESSION['fname'] == ""){
$_SESSION['err'] = "First Name Required";
}
if(//insert your format validation for first name){
$_SESSION['err'] = "First Name Invalid";}
}
//end of validation
if isset($_SESSION['err']){
header('Location: myform.php');
}
else{
//save all your variables into normal ones, i.e $fname-$_POST['fname'];
//insert into database;
//check correct insertion;
//redirect to landing page;
}
}
?>
Building a messaging system for my site and i have been stuck for days. I have this PHP link
<a href='user_msg.php?hash=$hash'>$name</a>
When you click on the link, it takes you to a page where you can send message to a user you've connected to (this connection is binded by the $hash)
in the page for sending the message, i hid the $hash in and hidden input value="$hash" and it sends the message to row in database with the $hash with the following scripts (They have no issue and work fine)
var msg_area = $('.msg_area');
msg_area.scrollTop(msg_area.prop("scrollHeight"));
$('#send_rep').submit(function (e) {
e.preventDefault();
var $form = $(this), url = $form.attr('action');
var posting = $.post(url, {rep_msg: $('#rep_msg').val(), hash: $('#hash').val()});
posting.done(function (data) {
alert('success');
});
});
PHP script to send
require_once ("db.php");
$db = new MyDB();
session_start();
if (isset($_POST['rep_msg']) && !empty($_POST['rep_msg']) || isset($_POST['hash']) && !empty($_POST['hash']))
{
$hash = (int)$_GET['hash'];
$my_id = $_SESSION['log_id'];
$rep_msg = $_POST['rep_msg'];
$hash = $_POST['hash'];
$rsql = <<<EOF
INSERT INTO messager (message, group_hash, from_id) VALUES('$rep_msg', '$hash', '$my_id');
EOF;
$rret = $db->exec($rsql);
$ursql = <<<EOF
SELECT * FROM User WHERE ID = '$my_id';
EOF;
$urret = $db->query($ursql);
while ($urrow = $urret->fetchArray(SQLITE3_ASSOC)) {
$from_fname = $urrow['fname'];
$from_img = $urrow['image'];
header('Location: user_msg.php?hash=' . $hash);
}
}
The above Ajax Request and php script work fone to sedn the messages to database.
The issue not is getting the messages from database
This is the script i am currently using (not working)
PHP script to get message
require_once ("db.php");
$db = new MyDB();
session_start();
if (isset($_GET['hash']) && !empty($_GET['hash']))
{
$hash = (int)$_GET['hash'];
$us_id = $_SESSION['log_id'];
$mesql =<<<EOF
SELECT from_id, message FROM messager WHERE group_hash = '$hash';
EOF;
$meret = $db->query($mesql);
while ($merow = $meret->fetchArray(SQLITE3_ASSOC))
{
$from_id = $merow['from_id'];
$messages = $merow['message'];
$usql =<<<EOF
SELECT * FROM User WHERE ID = '$from_id';
EOF;
$uret = $db->query($usql);
while ($urow = $uret->fetchArray(SQLITE3_ASSOC)) {
$from_fname = $urow['fname'];
$from_img = $urow['image'];
if ($from_id != $_SESSION['log_id']) {
echo "
<div class='from_bubble'><div class='from_img'><img src='$from_img'></div><div class='from_txt'><p>$messages</p></div></div>";
} else {
echo "
<div class='rep_bubble'><div class='rep_img'><img src='$from_img'></div><div class='rep_txt'><p>$messages</p></div></div>";
}
}
echo "<input style='display: none' type='text' class='hash' name='hash' value='$hash' id='hash'>";
}
}
Ajax Request
setInterval(function() {
$('.msg_area').load("get_msg.php");
}, 2000);
But the get is not working. I suspect fro some reason, its not getting the $hash. Please is there a solution to this or am i trying something impossible.
Any help would be appreciated. If more info is needed please ask. Thanks in advance
Maybe $hash = (int)$_GET['hash']; would be $hash = (int)$_POST['hash'];
And you have more than just one $_GET...
In your ajax request you are using POST so you will need to get the hash with the POST as well: if (isset($_POST['hash']) && !empty($_POST['hash']))
{
$hash = (int)$_POST['hash'];
Using '' in PHP indicates the actual string you are writing.
If you want to use a PHP variable in a string you should use "", so try changing $name
Check this for more info:
http://php.net/manual/en/language.types.string.php
Then, how do you hide your hash in the input?
You could use <input value="$_GET['hash']" ... />
In the script to send , does it enter the if? Try adding statements to see if SQL returns any error.
Hope this helps.
Answer to the question was to create a PHP SESSION for the $hash($_SESSION['hash'] = $hash) and to use this session all over the site with session_start().
I've got a form that I am populating from the database using PHP.
I would like a popup using Javascript confirming if the user would like to delete the movie.
The popup should contain the movie & release year.
Thus far, only the first value will appear in the popup...
print("<script type=\"text/javascript\">\n");
print("function confirmDelete(){");
print("var del = document.getElementById('movie').value;\n");
print("var status = confirm('Are you sure you wish to delete: ' + del + '?');\n");
print("return status;\n");
print("}</script>\n");
print("<h1>Delete Record</h1>");
//Select Movies
$query = "SELECT title release_year
FROM movies
ORDER BY title";
$result = mysql_query($query)
or die("<h1>Error - (Movies) the query could not be executed</h1>\n");
print("<form method=\"post\" action\"\">\n");
print("<select id=\"movie\" name=\"movies\">\n");
while ($row = mysql_fetch_array($result))
print("<option value=\"$row[0], $row[1]\">$row[0]</option>\n");
print("</select>\n");
print("<input name=\"select_delete\" type=\"submit\"
value=\"Delete\" onclick=\"return confirmDelete();\">\n");
print("</form>\n");
Whats the best way to tackle this?
Try this:
Javascript
var form = document.querySelector('form');
form.addEventListener('submit', function(e) {
e.preventDefault();
var x = confirm('confirmation message here');
if (x) {
form.removeEventListener('submit');
form.submit();
}
});
you can use this function to confirm user action
....
print("<input name=\"select_delete\" type=\"submit\"
value=\"Delete\" onclick=\"confirmDelete();\">\n");
print("</form>\n");
?>
<script>
function confirmDelete()
{
var e = document.getElementById("movie");
var msg = e.options[e.selectedIndex].value;
var x;
var r=confirm("Delete" + msg + "entry?");
if (r==true)
{
//OK button pressed
}
else
{
//Cancel button pressed
}
}
</script>
You can write the 'delete function' using ajax and most of your code you can simply write like this:
<?php
//code in php
?>
code in javascript
<?php
//more code in php
?>
Hi I have a PHP file with data. The value is passed on to another php file which process it successfully. But the first php file does not refresh to update the new result. It have to do it manually. Can any one tell me where I'm wrong or what needs to be done. Please find my code below.
PHP code (1st page, index.php)
function display_tasks_from_table() //Displayes existing tasks from table
{
$conn = open_database_connection();
$sql = 'SELECT id, name FROM todolist';
mysql_select_db('todolist'); //Choosing the db is paramount
$retval = mysql_query( $sql, $conn );
if(! $retval )
{
die('Could not get data: ' . mysql_error());
}
echo "<form class='showexistingtasks' name='showexistingtasks' action='remove_task.php' method='post' >";
while($row = mysql_fetch_assoc($retval))
{
echo "<input class='checkbox' type='checkbox' name='checkboxes{$row['id']}' value='{$row['name']}' onclick='respToChkbox()' >{$row['name']} <img src='images/show_options.gif' /><br>";
}
echo "</form>";
echo "<label id='removeerrormsg'></label>";
close_database_connection($conn);
}
Javascript code which finds the selected value:
var selVal; //global variable
function respToChkbox()
{
var inputElements = document.getElementsByTagName('input'),
input_len = inputElements.length;
for (var i = 0; i<input_len; i++)
{
if (inputElements[i].checked === true)
{
selVal = inputElements[i].value;
}
}
}
jQuery code which passes value to another page (remove_Task.php):
$(document).ready(function() {
$(".checkbox").click(function(){
$.ajax({
type: "POST",
url: "remove_task.php", //This is the current doc
data: {sel:selVal, remsubmit:"1"},
success: function(data){
//alert(selVal);
//console.log(data);
}
});
});
});
PHP code (2nd page, remove_task.php);
session_start();
error_reporting(E_ALL);ini_set('display_errors', 'On');
$task_to_remove = $_POST['sel'];
function remove_from_list() //Removes a selected task from DB
{
$db_connection = open_database_connection();
global $task_to_remove;
mysql_select_db('todolist');
$sql = "DELETE FROM todolist WHERE name = "."'".$task_to_remove."'";
if($task_to_remove!='' || $task_to_remove!=null)
{
mysql_query($sql, $db_connection);
}
close_database_connection($db_connection);
header("Location: index.php");
}
if($task_to_remove != "") {
remove_from_list();
}
The selected value is getting deleted but the display on index.php is not updated automatically. I have to manually refresh to see the updated result. Any help would be appreciated.
By calling header("Location: index.php"); you don't redirect main page. You sent an ajax request - you can think about it as of opening a new page at the background, so this code redirects that page to index.php.
The better way to solve your task is to return status to your success function and remove items which were deleted from the database.
success: function(data){
if(data.success){
//remove deleted items
}
}