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12.12.2004 at 08:09AM PST, ID: 21239577
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6.2

Populating a dropdown menu dynamically

Asked by aphix in PHP and Databases

Tags: ,

I have a form with 2 drop down menus (list menus) populating from a mysql database.

vdesc_manid (manafacturer)
vdesc_modid (model)

Currently when the user selects the model menu, they get all the models from every manafactuer thats listed in the table. I would like to add some javascript that would filter the model dropdown so that it only displays models by the manafacturer selected from the manafacturer menu previously.

Ive seen lots of examples on the itnernet, but havent had any luck editing them to make them work for me.

Im sure its farily simple to do, but ive burnt out trying to do it.

Heres the html code for my page.

-----------------------------------------------------------------------------------------
<html>
<head>
</head>
<center>
<form method="post" action="newstock_script.php">
<input type="hidden" name="vdesc_id" value="">
    <table>
      <tr>
        <td align="left">Year</td>
        <td> <select name="vdesc_year" id="vdesc_year">
            <option value="NEW">NEW</option>
            <option value="2004/54">2004/54</option>
            <option value="2004/04">2004/04</option>
            <option value="2004/53">2004/53</option>
            <option value="2003/53">2003/53</option>
            <option value="2003/03">2003/03</option>
            <option value="2003/52">2003/52</option>
            <option value="2002/52">2002/52</option>
            <option value="2002/02">2002/02</option>
            <option value="2002/51">2002/51</option>
            <option value="2001/51">2001/51</option>
            <option value="2001/Y">2001/Y</option>
            <option value="2000/Y">2000/Y</option>
            <option value="2000/X">2000/X</option>
          </select></td>
      </tr>
      <tr>
        <td width="127" align="left">Manafacturer </td>
        <td width="166">
          <?
                  include("db.php");
                  
                  //populate manafacturer dropdown
                  $sql_vmod_man="SELECT vman_man FROM vman";
                  $result_vmod_man=mysql_query($sql_vmod_man);
                  $options_vmod_man="";
                  while ($row_vmod_man=mysql_fetch_array($result_vmod_man)) {
                $man=$row_vmod_man["vman_man"];
                $options_vmod_man.="<OPTION VALUE=\"$man\">".$man;
                  }

                  //populate model dropdown
                  $sql_vmod_mod="SELECT vmod_mod FROM vmod";
                  $result_vmod_mod=mysql_query($sql_vmod_mod);
                  $options_vmod_mod="";
                  while ($row_vmod_mod=mysql_fetch_array($result_vmod_mod)) {
                $mod=$row_vmod_mod["vmod_mod"];
                $options_vmod_mod.="<OPTION VALUE=\"$mod\">".$mod;
                  }
            
                  //populate ecol dropdown
                  $sql_ecol_ecol="SELECT ecol_ecol FROM ecol";
                  $result_ecol_ecol=mysql_query($sql_ecol_ecol);
                  $options_ecol_ecol="";
                  while ($row_ecol_ecol=mysql_fetch_array($result_ecol_ecol)) {
                $ecol=$row_ecol_ecol["ecol_ecol"];
                $options_ecol_ecol.="<OPTION VALUE=\"$ecol\">".$ecol;
                  }
                  
                  //populate icol dropdown
                  $sql_icol_icol="SELECT icol_icol FROM icol";
                  $result_icol_icol=mysql_query($sql_icol_icol);
                  $options_icol_icol="";
                  while ($row_icol_icol=mysql_fetch_array($result_icol_icol)) {
                $icol=$row_icol_icol["icol_icol"];
                $options_icol_icol.="<OPTION VALUE=\"$icol\">".$icol;
                  }
            ?>
          <SELECT NAME=vdesc_manid>
            <OPTION VALUE=0>Choose
            <?=$options_vmod_man?>
          </SELECT> </td>
      </tr>
      <tr>
        <td align="left">Model</td>
        <td> <SELECT NAME=vdesc_modid>
            <OPTION VALUE=0>Choose
            <?=$options_vmod_mod?>
          </SELECT> </td>
      </tr>
      <tr>
        <td align="left">Variant</td>
        <td> <input type="text" name="vdesc_variant"></td>
      </tr>
      <tr>
        <td align="left">Transmission</td>
        <td> <select name="vdesc_trans">
            <option value="Auto" selected>auto</option>
            <option value="Manual">manual</option>
          </select></td>
      </tr>
      <tr>
        <td align="left">Transmission Spec</td>
        <td> <input type="text" name="vdesc_transs"></td>
      </tr>
      <tr>
        <td align="left">Price</td>
        <td> <input type="text" name="vdesc_price"></td>
      </tr>
      <tr>
        <td align="left">Exterior Colour</td>
        <td> <SELECT NAME=vdesc_ecol>
            <OPTION VALUE=0>Choose
            <?=$options_ecol_ecol?>
          </SELECT> </td>
      </tr>
      <tr>
        <td align="left">Interior Colour</td>
        <td> <SELECT NAME=vdesc_icol>
            <OPTION VALUE=0>Choose
            <?=$options_icol_icol?>
          </SELECT> </td>
      </tr>
      <tr>
        <td align="left">&nbsp;</td>
        <td>&nbsp; </td>
      </tr>
      <tr>
        <td align="left">Wheels</td>
        <td> <input type="text" name="vdesc_wheels"></td>
      </tr>
      <tr>
        <td align="left">Option 1</td>
        <td> <input type="text" name="vdesc_opt1"></td>
      </tr>
      <tr>
        <td align="left">Option 2</td>
        <td> <input type="text" name="vdesc_opt2"></td>
      </tr>
      <tr>
        <td align="left">Option 3</td>
        <td> <input type="text" name="vdesc_opt3"></td>
      </tr>
      <tr>
        <td align="left">Option 4</td>
        <td> <input type="text" name="vdesc_opt4"></td>
      </tr>
      <tr>
        <td align="left">Option 5</td>
        <td> <input type="text" name="vdesc_opt5"></td>
      </tr>
      <tr>
        <td align="left">Option 6</td>
        <td> <input type="text" name="vdesc_opt6"></td>
      </tr>
      <tr>
        <td align="left">Option 7</td>
        <td> <input type="text" name="vdesc_opt7"></td>
      </tr>
      <tr>
        <td align="left">Option 8</td>
        <td> <input type="text" name="vdesc_opt8"></td>
      </tr>
      <tr>
        <td align="left">Option 9</td>
        <td> <input type="text" name="vdesc_opt9"></td>
      </tr>
      <tr>
        <td align="left">Option 10</td>
        <td> <input type="text" name="vdesc_opt10"></td>
      </tr>
      <tr>
        <td align="left">Option 11</td>
        <td> <input type="text" name="vdesc_opt11"></td>
      </tr>
      <tr>
        <td align="left">Millage</td>
        <td><input type="text" name="vdesc_miles"></td>
      </tr>
      <tr></tr>
        <td colspan="2"> </td>
      </tr>
      <tr>
        <td align="left">&nbsp;</td>
        <td>
          <p align="center">
            <input type="submit" value="Enter record">
        </td>
      </tr>
    </table>
</form>
</center>
</html>

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[+][-]12.14.2004 at 05:24PM PST, ID: 12826029

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About this solution

Zone: PHP and Databases
Tags: mysql, javascript
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Solution Provided By: jkna_gunn
Participating Experts: 1
Solution Grade: B
 
 
[+][-]12.16.2004 at 02:55AM PST, ID: 12839000

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[+][-]12.16.2004 at 03:36AM PST, ID: 12839243

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