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Drop Down List Mastery

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Not open for further replies.

YoungManRiver

IS-IT--Management
Feb 9, 2004
220
US
All,

Trying to master the problem with this code:
Code:
<?php
   require('./functions/db_connect.php');
   $cur_cnt = "001";
   $cur_dat = date("m/d/y");
   $sql = "SELECT inv_no, inv_rep FROM invoice WHERE inv_dat=$cur_dat;";
   $result = mysql_query($sql);
   while ($row = mysql_fetch_assoc($result)) {
      $rct = $row['inv_no'];
      $rep = $row['inv_rep'];
   }
   if (isset($rct)) {
      $cur_cnt = $rct + 1;
   }
   $cur_yrr = date("y");
   $cur_day = date("d");
   $cur_mnt = date("m");
   $cur_pre = $cur_yrr."-".$cur_mnt."-".$cur_day;
   $cur_inv = $cur_pre.$cur_cnt;
   $sql = "SELECT cli_no, cli_cnm FROM client ORDER BY cli_cnm;";
   $result = mysql_query($sql);
   $comp_list="";
   while ($row = mysql_fetch_assoc($result)) {
      $cn = $row['cli_no'];
      $vl = $row['cli_cnm'];
      $comp_list .= "<option value=$cn>$vl</option>";
   }
   $frm_date = "<INPUT TYPE='text' SIZE=25 NAME='inv_dat' VALUE=$cur_dat>";
   $frm_cont = "<INPUT TYPE='text' SIZE=25 NAME='inv_ctt'>";
   $frm_invn = "<INPUT TYPE='text' SIZE=25 NAME='inv_num' VALUE=$cur_inv>";
   $frm_emal = "<INPUT TYPE='text' SIZE=25 NAME='inv_eml'>";
   $frm_ordr = "<INPUT TYPE='text' SIZE=25 NAME='inv_ord'>";
   $frm_addr = "<INPUT TYPE='text' SIZE=25 NAME='inv_adr'>";
   $frm_rpnm = "<INPUT TYPE='text' SIZE=15 NAME='inv_rep'>";
   $frm_fobf = "<INPUT TYPE='text' SIZE=8  NAME='inv_fob'>";
   $frm_city = "<INPUT TYPE='text' SIZE=25 NAME='inv_cty'>";
   $frm_stat = "<INPUT TYPE='text' SIZE=2  NAME='inv_stt'>";
   $frm_zipc = "<INPUT TYPE='text' SIZE=9  NAME='inv_zip'>";
   $frm_phon = "<INPUT TYPE='text' SIZE=25 NAME='inv_phn'>";
   $frm_faxn = "<INPUT TYPE='text' SIZE=25 NAME='inv_fax'>";

   if (isset($HTTP_POST_VARS['process'])) {
      $select = (isset($HTTP_POST_VARS['inv_cmp']) ? $HTTP_POST_VARS['inv_cmp'] : '');
echo "Sel => $select <br>";
      $sql = "SELECT * FROM client WHERE cli_no=$select;";
      $result = mysql_query($sql);
      while ($row = mysql_fetch_assoc($result)) {
         $row_cont = $row['$cli_ctt'];
         $row_emal = $row['$cli_eml'];
         $row_addr = $row['$cli_ad1'];
         $row_add1 = $row['$cli_ad2'];
         $row_add2 = $row['$cli_ad3'];
         if (!is_null($row_add1)) {
            $row_addr .= ", ".$row_add1;
         }
         if (!is_null($row_add2)) {
            $row_addr .= ", ".$row_add2;
         }
         $row_city = $row['$cli_cty'];
         $row_stat = $row['$cli_st'];
         $row_zipc = $row['$cli_zip'];
         $row_phon = $row['$cli_ph'];
         $row_faxn = $row['$cli_fax'];
         $frm_date = "<INPUT TYPE='text' SIZE=25 NAME='inv_dat' VALUE=$cur_dat>";
         $frm_cont = "<INPUT TYPE='text' SIZE=25 NAME='inv_ctt' VALUE=$row_cont>";
         $frm_invn = "<INPUT TYPE='text' SIZE=25 NAME='inv_num' VALUE=$cur_inv>";
         $frm_emal = "<INPUT TYPE='text' SIZE=25 NAME='inv_eml' VALUE=$row_emal>";
         $frm_addr = "<INPUT TYPE='text' SIZE=25 NAME='inv_adr' VALUE=$row_addr>";
         $frm_rpnm = "<INPUT TYPE='text' SIZE=15 NAME='inv_rep' VALUE=$rep>";
         $frm_city = "<INPUT TYPE='text' SIZE=25 NAME='inv_cty' VALUE=$row_city>";
         $frm_stat = "<INPUT TYPE='text' SIZE=2  NAME='inv_stt' VALUE=$row_stat>";
         $frm_zipc = "<INPUT TYPE='text' SIZE=9  NAME='inv_zip' VALUE=$row_zipc>";
         $frm_phon = "<INPUT TYPE='text' SIZE=25 NAME='inv_phn' VALUE=$row_phon>";
         $frm_faxn = "<INPUT TYPE='text' SIZE=25 NAME='inv_fax' VALUE=$row_faxn>";
      }

   }
/*
<SCRIPT LANGUAGE=JavaScript>
<!-- Hide from other browsers
        parent.location = this.form;
// End hiding from other browsers -->
</SCRIPT>
*/
?>

<html>
<head>
<title>MyOps System - Work Order</title>
</head>

<BODY BGCOLOR="#ffFFdd">
   <FORM name="ops" METHOD="POST" ACTION="<?php $_SERVER['PHP_SELF']; ?>">
   <TABLE BORDER=2 CELLPADDING=5 WIDTH=90% height=400 align=center BGCOLOR="#F0F8FF" >
       <TR>
       <TD>
       <TABLE BORDER=0 CELLPADDING=5 WIDTH=95% align=center BGCOLOR="#F0F8FF" class=bd>
           <TR>
           <TD colspan=10 ALIGN=center VALIGN=bottom>
               <H1>MyOps System - Work Order</H1>
               Company Selection Screen
           </td>
           </tr>

           <tr>
           <td width=50 align=right>Company:</td>
           <td width=150 align=left>
               <input type="hidden" name="process" value="">
               <!!SELECT NAME="inv_cmp" onchange="this.form.submit()">
               <SELECT NAME="inv_cmp" onchange="load(this.form)">
               <?php echo $comp_list; ?>
               </SELECT>
           </td>
           <td width=70 align=right>Date:</td>
           <td align=left colspan=7><?php echo $frm_date; ?></td>
           </tr>

           <tr>
           <td align=right>Contact:</td>
           <td align=left><?php echo $frm_cont; ?></td>
           <td align=right>Invoice:</td>
           <td align=left colspan=7><?php echo $frm_invn; ?></td>
           </tr>

           <tr>
           <td align=right>EMail:</td>
           <td align=left><?php echo $frm_emal; ?></td>
           <td align=right>Order No:</td>
           <td align=left width=250 colspan=7><?php echo $frm_ordr; ?></td>
           </tr>

           <tr>
           <td align=right>Address:</td>
           <td align=left><?php echo $frm_addr; ?></td>
           <td align=right>Rep:</td>
           <td align=left colspan=4><?php echo $frm_rpnm; ?></td>
           <td align=right>FOB:</td>
           <td align=left colspan=2><?php echo $frm_fobf; ?></td>
           </tr>

           <tr>
           <td align=right>City:</td>
           <td align=left><?php echo $frm_city; ?></td>
           <td align=right>State:</td>
           <td align=left><?php echo $frm_stat; ?></td>
           <td align=right>Zip:</td>
           <td align=left colspan=5><?php echo $frm_zipc; ?></td>
           </tr>

           <tr>
           <td align=right>Phone:</td>
           <td align=left><?php echo $frm_phon; ?></td>
           <td align=right>Fax:</td>
           <td align=left colspan=7><?php echo $frm_faxn; ?></td>
           </tr>

           <tr>
           <td align=center colspan=10>
               <INPUT TYPE="submit" NAME="submit" VALUE="Submit">
           </td>
           </tr>
       </TABLE>
       </td>
       </TR>
   </TABLE>
   </FORM>
</BODY>
</HTML>
Had previous suggestions to add the hidden field, but processing only worked with click on submit button. Then realized this only works with a javascript to recall the page, but do not have the syntax right, cause now getting a 404 error.

Any help is appreciated.

Thanks!

YMR
 
All,

Here is latest code:
Code:
<?php
   require('./functions/db_connect.php');
   $cur_cnt = "001";
   $cur_dat = date("m/d/y");
   $sql = "SELECT inv_no, inv_rep FROM invoice WHERE inv_dat=$cur_dat;";
   $result = mysql_query($sql);
   while ($row = mysql_fetch_assoc($result)) {
      $rct = $row['inv_no'];
      $rep = $row['inv_rep'];
   }
   if (isset($rct)) {
      $cur_cnt = $rct + 1;
   }
   $cur_yrr = date("y");
   $cur_day = date("d");
   $cur_mnt = date("m");
   $cur_pre = $cur_yrr."-".$cur_mnt."-".$cur_day;
   $cur_inv = $cur_pre.$cur_cnt;
   $sql = "SELECT cli_no, cli_cnm FROM client ORDER BY cli_cnm;";
   $result = mysql_query($sql);
   $comp_list="";
   $select = (isset($HTTP_POST_VARS['inv_cmp']) ? $HTTP_POST_VARS['inv_cmp'] : '');
echo "Sel => $select <br>";
   while ($row = mysql_fetch_assoc($result)) {
      if (isset($HTTP_POST_VARS['process']) && $select==$row['cli_no']) {
         $cn = $row['cli_no'];
echo "Sel => $select <=> $cn <br>";
         $vl = $row['cli_cnm'];

         $comp_list = "<option value=$cn selected>$vl</option>";
      } else {
         $cn = $row['cli_no'];
         $vl = $row['cli_cnm'];
         $comp_list .= "<option value=$cn>$vl</option>";
      }
   }
   $frm_date = "<INPUT TYPE='text' SIZE=25 NAME='inv_dat' VALUE=$cur_dat>";
   $frm_cont = "<INPUT TYPE='text' SIZE=25 NAME='inv_ctt'>";
   $frm_invn = "<INPUT TYPE='text' SIZE=25 NAME='inv_num' VALUE=$cur_inv>";
   $frm_emal = "<INPUT TYPE='text' SIZE=25 NAME='inv_eml'>";
   $frm_ordr = "<INPUT TYPE='text' SIZE=25 NAME='inv_ord'>";
   $frm_addr = "<INPUT TYPE='text' SIZE=25 NAME='inv_adr'>";
   $frm_rpnm = "<INPUT TYPE='text' SIZE=15 NAME='inv_rep'>";
   $frm_fobf = "<INPUT TYPE='text' SIZE=8  NAME='inv_fob'>";
   $frm_city = "<INPUT TYPE='text' SIZE=25 NAME='inv_cty'>";
   $frm_stat = "<INPUT TYPE='text' SIZE=2  NAME='inv_stt'>";
   $frm_zipc = "<INPUT TYPE='text' SIZE=9  NAME='inv_zip'>";
   $frm_phon = "<INPUT TYPE='text' SIZE=25 NAME='inv_phn'>";
   $frm_faxn = "<INPUT TYPE='text' SIZE=25 NAME='inv_fax'>";

   if (isset($HTTP_POST_VARS['process'])) {
      $sql = "SELECT * FROM client WHERE cli_no=$select;";
      $result = mysql_query($sql);
      while ($row = mysql_fetch_assoc($result)) {
         $row_cont = $row['$cli_ctt'];
         $row_emal = $row['$cli_eml'];
         $row_addr = $row['$cli_ad1'];
         $row_add1 = $row['$cli_ad2'];
         $row_add2 = $row['$cli_ad3'];
         if (!is_null($row_add1)) {
            $row_addr .= ", ".$row_add1;
         }
         if (!is_null($row_add2)) {
            $row_addr .= ", ".$row_add2;
         }
         $row_city = $row['$cli_cty'];
         $row_stat = $row['$cli_st'];
         $row_zipc = $row['$cli_zip'];
         $row_phon = $row['$cli_ph'];
         $row_faxn = $row['$cli_fax'];
         $frm_date = "<INPUT TYPE='text' SIZE=25 NAME='inv_dat' VALUE=$cur_dat>";
         $frm_cont = "<INPUT TYPE='text' SIZE=25 NAME='inv_ctt' VALUE=$row_cont>";
         $frm_invn = "<INPUT TYPE='text' SIZE=25 NAME='inv_num' VALUE=$cur_inv>";
         $frm_emal = "<INPUT TYPE='text' SIZE=25 NAME='inv_eml' VALUE=$row_emal>";
         $frm_addr = "<INPUT TYPE='text' SIZE=25 NAME='inv_adr' VALUE=$row_addr>";
         $frm_rpnm = "<INPUT TYPE='text' SIZE=15 NAME='inv_rep' VALUE=$rep>";
         $frm_city = "<INPUT TYPE='text' SIZE=25 NAME='inv_cty' VALUE=$row_city>";
         $frm_stat = "<INPUT TYPE='text' SIZE=2  NAME='inv_stt' VALUE=$row_stat>";
         $frm_zipc = "<INPUT TYPE='text' SIZE=9  NAME='inv_zip' VALUE=$row_zipc>";
         $frm_phon = "<INPUT TYPE='text' SIZE=25 NAME='inv_phn' VALUE=$row_phon>";
         $frm_faxn = "<INPUT TYPE='text' SIZE=25 NAME='inv_fax' VALUE=$row_faxn>";
      }

   }
/*
<SCRIPT LANGUAGE=JavaScript>
<!-- Hide from other browsers
        parent.location = this.form;
// End hiding from other browsers -->
</SCRIPT>
*/
?>

<html>
<head>
<title>MyOps System - Work Order</title>
</head>

<BODY BGCOLOR="#ffFFdd">
   <FORM name="ops" METHOD="POST" ACTION="<?php $_SERVER['PHP_SELF']; ?>">
   <TABLE BORDER=2 CELLPADDING=5 WIDTH=90% height=400 align=center BGCOLOR="#F0F8FF" >
       <TR>
       <TD>
       <TABLE BORDER=0 CELLPADDING=5 WIDTH=95% align=center BGCOLOR="#F0F8FF" class=bd>
           <TR>
           <TD colspan=10 ALIGN=center VALIGN=bottom>
               <H1>MyOps System - Work Order</H1>
               Company Selection Screen
           </td>
           </tr>

           <tr>
           <td width=50 align=right>Company:</td>
           <td width=150 align=left>
               <input type="hidden" name="process" value="">
               <SELECT NAME="inv_cmp" onchange="location.reload(true)">
               <?php echo $comp_list; ?>
               </SELECT>
           </td>
           <td width=70 align=right>Date:</td>
           <td align=left colspan=7><?php echo $frm_date; ?></td>
           </tr>

           <tr>
           <td align=right>Contact:</td>
           <td align=left><?php echo $frm_cont; ?></td>
           <td align=right>Invoice:</td>
           <td align=left colspan=7><?php echo $frm_invn; ?></td>
           </tr>

           <tr>
           <td align=right>EMail:</td>
           <td align=left><?php echo $frm_emal; ?></td>
           <td align=right>Order No:</td>
           <td align=left width=250 colspan=7><?php echo $frm_ordr; ?></td>
           </tr>

           <tr>
           <td align=right>Address:</td>
           <td align=left><?php echo $frm_addr; ?></td>
           <td align=right>Rep:</td>
           <td align=left colspan=4><?php echo $frm_rpnm; ?></td>
           <td align=right>FOB:</td>
           <td align=left colspan=2><?php echo $frm_fobf; ?></td>
           </tr>

           <tr>
           <td align=right>City:</td>
           <td align=left><?php echo $frm_city; ?></td>
           <td align=right>State:</td>
           <td align=left><?php echo $frm_stat; ?></td>
           <td align=right>Zip:</td>
           <td align=left colspan=5><?php echo $frm_zipc; ?></td>
           </tr>

           <tr>
           <td align=right>Phone:</td>
           <td align=left><?php echo $frm_phon; ?></td>
           <td align=right>Fax:</td>
           <td align=left colspan=7><?php echo $frm_faxn; ?></td>
           </tr>

           <tr>
           <td align=center colspan=10>
               <INPUT TYPE="submit" NAME="submit" VALUE="Submit">
           </td>
           </tr>
       </TABLE>
       </td>
       </TR>
   </TABLE>
   </FORM>
</BODY>
</HTML>
The location.reload(true) reloads the DD list, but nothing else seems to work. Do I really need to bring back the javascript and try to get it to work this out?

Thanks!

YMR
 
All,

Final code:
Code:
<?php
   require('./functions/db_connect.php');
   $cur_cnt = "001";
   $cur_dat = date("m/d/y");
   $sql = "SELECT inv_no, inv_rep FROM invoice WHERE inv_dat=$cur_dat;";
   $result = mysql_query($sql);
   while ($row = mysql_fetch_assoc($result)) {
      $rct = $row['inv_no'];
      $rep = $row['inv_rep'];
   }
   if (isset($rct)) {
      $cur_cnt = $rct + 1;
   }
   $cur_yrr = date("y");
   $cur_day = date("d");
   $cur_mnt = date("m");
   $cur_pre = $cur_yrr."-".$cur_mnt."-".$cur_day;
   $cur_inv = $cur_pre.$cur_cnt;
   $sql = "SELECT cli_no, cli_cnm FROM client ORDER BY cli_cnm;";
   $result = mysql_query($sql);
   $comp_list="";
   $select = (isset($HTTP_POST_VARS['inv_cmp']) ? $HTTP_POST_VARS['inv_cmp'] : '');
   while ($row = mysql_fetch_assoc($result)) {
      $cn = $row['cli_no'];
      $vl = $row['cli_cnm'];
      if ($select==$row['cli_no']) {
         $comp_list = "<option value=$cn selected>$vl</option>";
      } else {
         $comp_list .= "<option value=$cn>$vl</option>";
      }
   }
   $frm_date = "<INPUT TYPE='text' SIZE=25 NAME='inv_dat' VALUE=$cur_dat>";
   $frm_cont = "<INPUT TYPE='text' SIZE=25 NAME='inv_ctt'>";
   $frm_invn = "<INPUT TYPE='text' SIZE=25 NAME='inv_num' VALUE=$cur_inv>";
   $frm_emal = "<INPUT TYPE='text' SIZE=25 NAME='inv_eml'>";
   $frm_ordr = "<INPUT TYPE='text' SIZE=25 NAME='inv_ord'>";
   $frm_addr = "<INPUT TYPE='text' SIZE=25 NAME='inv_adr'>";
   $frm_rpnm = "<INPUT TYPE='text' SIZE=15 NAME='inv_rep'>";
   $frm_fobf = "<INPUT TYPE='text' SIZE=8  NAME='inv_fob'>";
   $frm_city = "<INPUT TYPE='text' SIZE=25 NAME='inv_cty'>";
   $frm_stat = "<INPUT TYPE='text' SIZE=2  NAME='inv_stt'>";
   $frm_zipc = "<INPUT TYPE='text' SIZE=9  NAME='inv_zip'>";
   $frm_phon = "<INPUT TYPE='text' SIZE=25 NAME='inv_phn'>";
   $frm_faxn = "<INPUT TYPE='text' SIZE=25 NAME='inv_fax'>";

   if (isset($HTTP_POST_VARS['process'])) {
      $sql = "SELECT * FROM client WHERE cli_no=$select;";
      $result = mysql_query($sql);
      $rowcnt = mysql_num_rows($result);
      while ($row = mysql_fetch_assoc($result)) {
         $row_cont = $row['cli_ctt'];
         $row_emal = $row['cli_eml'];
         $row_addr = addslashes($row['cli_ad1']);
         $row_add1 = $row['cli_ad2'];
         $row_add2 = $row['cli_ad3'];
         if (!isset($row_add1)) {
            $row_addr .= ", ".addslashes($row_add1);
         }
         if (!isset($row_add2)) {
            $row_addr .= ", ".addslashes($row_add2);
         }
         $row_city = $row['cli_cty'];
         $row_stat = $row['cli_st'];
         $row_zipc = addslashes($row['cli_zip']);
         $row_phon = addslashes($row['cli_ph']);
         $row_faxn = $row['cli_fax'];
         $frm_date = "<INPUT TYPE='text' SIZE=25 NAME='inv_dat' VALUE=$cur_dat>";
         $frm_cont = "<INPUT TYPE='text' SIZE=25 NAME='inv_ctt' VALUE=$row_cont>";
         $frm_invn = "<INPUT TYPE='text' SIZE=25 NAME='inv_num' VALUE=$cur_inv>";
         $frm_emal = "<INPUT TYPE='text' SIZE=25 NAME='inv_eml' VALUE=$row_emal>";
         $frm_addr = "<INPUT TYPE='text' SIZE=25 NAME='inv_adr' VALUE='".$row_addr."'>";
         $frm_rpnm = "<INPUT TYPE='text' SIZE=15 NAME='inv_rep' VALUE=$rep>";
         $frm_city = "<INPUT TYPE='text' SIZE=25 NAME='inv_cty' VALUE=$row_city>";
         $frm_stat = "<INPUT TYPE='text' SIZE=2  NAME='inv_stt' VALUE=$row_stat>";
         $frm_zipc = "<INPUT TYPE='text' SIZE=9  NAME='inv_zip' VALUE=$row_zipc>";
         $frm_phon = "<INPUT TYPE='text' SIZE=25 NAME='inv_phn' VALUE=$row_phon>";
         $frm_faxn = "<INPUT TYPE='text' SIZE=25 NAME='inv_fax' VALUE=$row_faxn>";
      }

   }
?>

<html>
<head>
<title>MyOps System - Work Order</title>
</head>

<BODY BGCOLOR="#ffFFdd">
   <FORM name="ops" METHOD="POST" ACTION="<?php $_SERVER['PHP_SELF']; ?>">
   <TABLE BORDER=2 CELLPADDING=5 WIDTH=90% height=400 align=center BGCOLOR="#F0F8FF" >
       <TR>
       <TD>
       <TABLE BORDER=0 CELLPADDING=5 WIDTH=95% align=center BGCOLOR="#F0F8FF" class=bd>
           <TR>
           <TD colspan=10 ALIGN=center VALIGN=bottom>
               <H1>MyOps System - Work Order</H1>
               Company Selection Screen
           </td>
           </tr>

           <tr>
           <td width=50 align=right>Company:</td>
           <td width=150 align=left>
               <SELECT NAME="inv_cmp" onchange="document.forms['ops'].submit();">
               <?php echo $comp_list; ?>
               </SELECT>
           </td>
           <td width=70 align=right>Date:</td>
           <td align=left colspan=7><?php echo $frm_date; ?></td>
           </tr>

           <tr>
           <td align=right>Contact:</td>
           <td align=left><?php echo $frm_cont; ?></td>
           <td align=right>Invoice:</td>
           <td align=left colspan=7><?php echo $frm_invn; ?></td>
           </tr>

           <tr>
           <td align=right>EMail:</td>
           <td align=left><?php echo $frm_emal; ?></td>
           <td align=right>Order No:</td>
           <td align=left width=250 colspan=7><?php echo $frm_ordr; ?></td>
           </tr>

           <tr>
           <td align=right>Address:</td>
           <td align=left><?php echo $frm_addr; ?></td>
           <td align=right>Rep:</td>
           <td align=left colspan=4><?php echo $frm_rpnm; ?></td>
           <td align=right>FOB:</td>
           <td align=left colspan=2><?php echo $frm_fobf; ?></td>
           </tr>

           <tr>
           <td align=right>City:</td>
           <td align=left><?php echo $frm_city; ?></td>
           <td align=right>State:</td>
           <td align=left><?php echo $frm_stat; ?></td>
           <td align=right>Zip:</td>
           <td align=left colspan=5><?php echo $frm_zipc; ?></td>
           </tr>

           <tr>
           <td align=right>Phone:</td>
           <td align=left><?php echo $frm_phon; ?></td>
           <td align=right>Fax:</td>
           <td align=left colspan=7><?php echo $frm_faxn; ?></td>
           </tr>

           <tr>
           <td align=center colspan=10>
               <INPUT TYPE="submit" NAME="next" VALUE="Submit">
           </td>
           </tr>
       </TABLE>
       </td>
       </TR>
   </TABLE>
   <input type="hidden" name="process" value="">
   </FORM>
</BODY>
</HTML>
Solution to the problem was two fold:
1. Correct "onchange=" line: <SELECT NAME="inv_cmp" onchange="document.forms['ops'].submit();">,
2. Making sure there is only one "submit" on the form. I had to change the submit button name to "next".

Thanks all for you help!

Note to moderators:

I don't know if you think this is worthy, but DD-List updating is common, so maybe this should be in the knowledge base?

YMR
 
YMR

can you clarify what you mean by DD list updating? We don't have moderators that contribute to the FAQs but I would be happy to consider writing a FAQ if you could explain what you were looking for. Remember that we are a PHP forum though - the nub of your issues appear to be javascript related.

If I have guessed right: I always do my cascading drop downs using ajax-php calls or, if the choices are limited, using json objects stored client side. these are all javascript interactions primarily, and so would be best handled over in the js forum. Unsurprisingly there are at least two FAQs in that forum that deals with dynamically populating list boxes.
 
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