How to pass an id of current item to request table - php

Question

I have an application where a user can send request edit to the admin, now the problem is how to store the id of the requested asset from user_asset table to the request table so I can display it to the admin's page with full details of the asset
when the user clicks on the request edit he gets a form with editable fields filled with current information but how can I store this asset's id so I can fetch it to the admin's table with information from both tables (user_assets, requests)
I have user_asset table
asset_id
asset_category
code
title
userid
and requests table
id
reason
assetid
user_id
this is what I have done so far
if(isset($_POST['submit'])){
// get all values from input with no special charactere
$code = mysqli_real_escape_string($conn, $_POST['code']);
$asset_id = mysqli_real_escape_string($conn, $_GET['id']);
$reason = mysqli_real_escape_string($conn, $_POST['reason']);
if (!$error) {
if (!$error) {
// execute the sql insert
if(mysqli_query($conn, "INSERT INTO `requests`(id,reason,assetid, user_id)
VALUES( null, '" . $reason . "', '". $asset_id ."','" .$_SESSION['user_id'] . "')")) {
// if the insert result was true (OK)
$success_message = "req was successfully added ! ";
} else {
// if the insert result was false (KO)
$error_message = "Error in data...Please try again later!";
}
}
}
}
else{
if(isset($_GET['idedit']) ){
$result = mysqli_query($conn, "SELECT * from user_asset WHERE asset_id=".$_GET['idedit']);
$project = mysqli_fetch_array($result);
}
}
?>
and this is my form
<form method="post" action="req_ade.php" id="adding_new_assets">
<div class="control-group">
<label for="basicinput">الکود : </label>
<div class="controls">
<input type="number" id="basicinput" value="<?php echo $project['code']; ?>" placeholder="الكود" name="code" class="span8">
</div>
</div>
<div class="control-group">
<label for="basicinput">التفاصيل : </label>
<div class="controls">
<input type="text" id="basicinput" value="<?php echo $project['title']; ?>" placeholder="التفاصيل" name="title" class="span8">
</div>
</div>
<div>
<label style="color:black">السبب</label>
<textarea rows="8" cols="8" name="reason" class="form-control" placeholder="اذكر سبب التعديل ..." ></textarea>
</div>
<div class="control-group">
<div class="controls">
<button type="submit" name="submit" class="btn">طلب تعديل</button>
</div>
</div>
</form>
these are the errors I'm getting
Notice: Undefined index: id in D:\wamp64\www\Caprabia-test\req_ade.php on line 28
Fatal error: Uncaught exception 'mysqli_sql_exception' with message 'Incorrect integer value: '' for column 'assetid' at row 1' in D:\wamp64\www\Caprabia-test\req_ade.php on line 37
( ! ) mysqli_sql_exception: Incorrect integer value: '' for column 'assetid' at row 1 in D:\wamp64\www\Caprabia-test\req_ade.php on line 37

Answer 1

Notice: Undefined index: id in D:\wamp64\www\Caprabia-test\req_ade.php on line 28
There is no "id" in your $_GET array. So your $asset_id variable will be empty and a empty string is not a valid int number. You should add (int) in your query:
mysqli_query($conn, "INSERT INTO `requests`(id,reason,assetid, user_id)
VALUES( null, '" . $reason . "', '". (int)$asset_id ."','" .$_SESSION['user_id'] . "')")
Or better check the the $_GET array before you use it. Like this:
If(isset($_GET['id']))
{
$asset_id = mysqli_real_escape_string($conn, $_GET['id']);
}
else
{
...
}

Answer 2

Thank you for all your suggestions.
After trying a lot of suggestions and manipulating with the code I have found a solution for it.
if(isset($_POST['submit'])){
// get all values from input with no special charactere
$code = mysqli_real_escape_string($conn, $_POST['code']);
$asset_id = mysqli_real_escape_string($conn, $_POST['asset_id']);
$reason = mysqli_real_escape_string($conn, $_POST['reason']);
if (!$error) {
if (!$error) {
// execute the sql insert
if(mysqli_query($conn, "INSERT INTO `requests1`(id,reason,assetid, user_id)
VALUES( null, '" . $reason . "', '". $asset_id ."','" .$_SESSION['user_id'] . "')")) {
// if the insert result was true (OK)
$success_message = "req was successfully added ! ";
} else {
// if the insert result was false (KO)
$error_message = "Error in data...Please try again later!";
}
}
}
}
else{
if(isset($_GET['idedit']) ){
$result = mysqli_query($conn, "SELECT * from user_asset WHERE asset_id=".$_GET['idedit']);
$project = mysqli_fetch_array($result);
}
}
and this is the form I have posted the asset_id in a hidden type
<form method="post" action="req_ade1.php" id="adding_new_assets">
<div class="control-group">
<label for="basicinput">الکود : </label>
<div class="controls">
<input type="hidden" value="<?php echo $project['asset_id'];?>" name="asset_id" />
<input type="number" id="basicinput" value="<?php echo $project['code']; ?>" placeholder="الكود" name="code" class="span8">
</div>
</div>
<div class="control-group">
<label for="basicinput">التفاصيل : </label>
<div class="controls">
<input type="text" id="basicinput" value="<?php echo $project['title']; ?>" placeholder="التفاصيل" name="title" class="span8">
</div>
</div>
<div>
<label style="color:black">السبب</label>
<textarea rows="8" cols="8" name="reason" class="form-control" placeholder="اذكر سبب التعديل ..." ></textarea>
</div>
<div class="control-group">
<div class="controls">
<button type="submit" name="submit" class="btn">طلب تعديل</button>
</div>
</div>
</form>