Select statement using a second select statement from same input page to gather info

[micky125]

Hey guys I have been checking the forum for a way to populate a second select field depending on the choice made from the first one. Basically i am working on projects and the delays that occur. The first select is project and i am asking user to select it by using

<?php
          $sql = "SELECT ProjectName
                  FROM   ProjectDetails";
                 "ORDER BY ProjectName";
                $rs = mysql_query($sql);
                while($row = mysql_fetch_array($rs))
                {
                  echo "<option value=\"".$row['ProjectName']."\">";
                }
?>
 

then for my second select statement i want it to be populated by using

<?php
                $sql = "SELECT Task
                        FROM   Delay
                        WHERE  ProjectName = (the problem) ".
                       "ORDER BY Task";
                $rs = mysql_query($sql);
                while($row = mysql_fetch_array($rs))
                {
                  echo "<option value=\"".$row['Task']."\">";
                }
?>
 

I have seen a forum that says to use AJAX (http://bytes.com/forum/thread790663.html) but i dont have enough time to learn this. Is it possible to call the result found from the first select as a variable so i can then use it in the second query? where (the problem) = var1?

Any1 any ideas on this?

[Markus]

If you don't want a page refresh, you're going to have to learn AJAX (It seriously takes no longer than 1 hour to learn.) Otherwise, you will have to submit the dropdown list to the same page (as a form - using GET possibly) and then $_GET the selected projectName and use this in your second WHERE clause to show the related projects.

[micky125]

thanks for the quick reply appreciated. Ill have another look at some tutorials on AJAX if u say it easy to understand. Thanks for clarifying it.

[Markus]

thanks for the quick reply appreciated. Ill have another look at some tutorials on AJAX if u say it easy to understand. Thanks for clarifying it.

No problem. Once you've had a go, post the code you used (if you have a problem with it) and we'll give you more help!