Get value of select, from a list of users - php

Question

i have a table of users, where a user has a name, a surname, a right, and a "commit changes" button. This way, i want to assign rights to a person. Every column has the userID in it, and the whole thing is created from a database.
This is my dropdown to assign a right.
<form id="myForm" method="post" autocomplete="off">
<select name="rightsDropdownOptions" method="post">
<option value="admin">Admin</option>
<option value="masterEditor">MasterEditor</option>
<option value="modulEditor">ModulEditor</option>
<option value="teacher">Lehrer</option>
<option value="teacherAndEditor">Lehrer+Editor</option>
</select>
</form>
This is my php-code, which is executed by clicking the commitchangestorightsbutton
if ( isset($_POST['commitChangesOnRightsButton']) ){
$user = $_POST['commitChangesOnRightsButton'];
echo "<script>alert(".$user.");</script>";
$var = $_POST['rightsDropdownOptions'];
if($var == "1"){
echo "<script>alert(".$var.");</script>";
}
}
If i click the button now i get the following error:
Undefined index: rightsDropdownOptions in C:\xampp\htdocs\Iiigel\PHP\AdminGivePermission.php
I've been working on this for a while now, and i dont knwo how to solve this, id be glad if someone could help.

Answer 1

As highlighted by #Dharman you are making mistake in your code firstly you have to define post parameter "commitChangesOnRightsButton" into your code like this:
<form id="myForm" method="post" autocomplete="off" action"">
<select name="rightsDropdownOptions" method="post">
<option value="admin">Admin</option>
<option value="masterEditor">MasterEditor</option>
<option value="modulEditor">ModulEditor</option>
<option value="teacher">Lehrer</option>
<option value="teacherAndEditor">Lehrer+Editor</option>
</select>
<button type="submit" value="Assign" name="commitChangesOnRightsButton" />
</form>
Hope this will help!