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Posted by HawkEye on 10/21/05 01:02
Ian Davies wrote:
> Hello
>
> In a php file I have a drop down list with index numbers in whos default
> value is feed into an sql query that filters records from my database and
> displays them in an html table. Trouble is this happens as soon as the php
> is run so bringing up the same records filtered from the default index. Also
> when I select a new index no from the drop down list is doesnt refilter the
> records bringing up the ones for the new list. It still shows the old
> default ones and the dropdown list changes back to the default value. What
> alterations do I need to make?
> Some of my code below (Ive taken irrelevent bits out and simplified the SQL
> Statements to show only the important bits)
>
> Also I dont want to display the index no in the dropdown box. I wish to
> display its accociated description and only use the index for filtering. How
> do I acheive this?
>
> <?php
>
> $query_NC = "SELECT NCIndex, TopicDesc FROM NC WHERE StatusID = 1 ORDER BY
> TopicDesc ASC";
> $NC = mysql_query($query_NC, $conn) or die(mysql_error());
> $row_NC = mysql_fetch_assoc($NC);
> $totalRows_NC = mysql_num_rows($NC);
> ?>
>
>
> <html>
> <head>
> </head>
>
> <body>
>
> </p>
> <p>Use the drop down lists to filter the database:</p>
> <blockquote>
> <form name="form2" method="post" action="<?php echo
> $_SERVER['PHP_SELF']?>">
> <p>
> <select name="select">
> <?php
> do {
> ?>
> <option value="<?php echo $row_NC['NCIndex']?>"<?php if
> (!(strcmp($row_NC['NCIndex'], $row_NC['NCIndex']))) {echo "SELECTED";}
> ?>><?php echo $row_NC['NCIndex']?></option>
> <?php
> } while ($row_NC = mysql_fetch_assoc($NC));
> $rows = mysql_num_rows($NC);
> if($rows > 0) {
> mysql_data_seek($NC, 0);
> $row_NC = mysql_fetch_assoc($NC);
> }
> ?>
> </select>
> </p>
> <p>
> <input type="submit" name="Submit2" value="Submit">
> </p>
> </form>
> <p>
> <form name="form3" method=post action="">
> <p>
> <?php
> // Request the text of all the Questions
> $result = mysql_query("SELECT Mystuff FROM MyTables WHERE Questions.TypeID =
> QuestionType.TypeID AND NCIndex= '".$row_NC['NCIndex']."' ORDER BY
> QuestionNo");
> if (!$result) {
> exit('<p>Error performing query: ' . mysql_error() . '</p>');
> }
> $row = mysql_fetch_assoc($result);
> extract($row);
>
>
> ?>
> <input type="submit" name="Submit" value="Submit">
> </p>
> <table width="983" border="2" align="left" cellpadding="0"
> cellspacing="0">
> <tr>
> <td width="50"><div align="left"><span
> class="style2">Select</span></div></td>
> <td width="89"><span class="style2">Question No </span></td>
> <td width="247"><span class="style2">Question</span></td>
> <td width="118"><span class="style2">Type</span></td>
> <td width="282">Options</td>
> <td width="181"><span class="style2">Image</span></td>
> </tr>
> <tr>
> <?php
> while($row =& mysql_fetch_assoc($result)) {
> extract($row);
>
> ?>
> <tr class="<?php echo $class; ?>">
> <td width="50" rowspan="5" valign="top">
> <div align="center">
> <input type="checkbox" name="checkbox[]" value="<? echo
> $QuestionNo?>"
>
> </div></td>
> <td width="89" rowspan="5" valign="top"><?php echo $QuestionNo;
> ?> </td>
> <td width="247" rowspan="5" valign="top"><?php echo $Question;
> ?></td>
> <td width="118" rowspan="5" valign="top"><div
> align="center"></div>
> <?php echo $TypeDesc; ?></td>
> <td width="282" valign="top"><div align="left"></div>
> <?php echo $Optiona; ?></td>
> <tr class="<?php echo $class; ?>">
> <td width="282" valign="top"><?php echo $Optionb; ?></td>
> </tr>
> <tr class="<?php echo $class; ?>">
> <td width="282" valign="top"><?php echo $Optionc; ?></td>
> </tr>
> <tr class="<?php echo $class; ?>">
> <td width="282" valign="top"><?php echo $Optiond; ?></td>
> </tr>
> <tr class="<?php echo $class; ?>">
> <td width="282" height="20" valign="top"><?php echo $Optione;
> ?></td>
> </tr>
> <?php
> } // end while
> ?>
> </table>
> <p> </p>
> <p> </p>
> </form>
> <p></blockquote>
> </body>
> <html>
>
>
Without putting the code on a php server it's a bit difficult to be certain
but I think what you need is an if(isset($select.... Then feed that into
your sql query and it should work. Below is a cut down exmaple from
something I did for a friend a while ago. Hopefully it will make it a
little clearer what I mean
<form method="post" action="seasons.php">
<table width="20%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="60%">Choose Season</td>
<td width="40%"><div align="right">
<select name="season">
<option> </option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
</div>
</td>
</tr>
</table>
<input type="submit" value="Go"> <input type="reset" value="Clear">
</form>
<?
include ('connect.php');
if(isset($season))
{
$sql="SELECT * from sgate WHERE season like '$season' ORDER BY episode";
$result=mysql_query("$sql");
print '<b>Season :- '.$season."</b>";
print"<div align='center'>";
print"<table border='1' width='60%'>";
while($row=mysql_fetch_array($result))
{
print "<tr><td>".$row[episode]."</td><td>".$row[air_date]."</td><td><a
href='edit.php?id=".$row[id]."'>Edit</a></td></tr>";
print "<tr><td colspan='2'><b>".$row[title]."</b></td><td> </td></tr>";
print "<tr><td colspan='3'><font
size='-1'>".$row[synopsis]."</font></td></tr>";
print "<tr><td colspan='3'><hr></td></tr>";
}
}
?>
--
Regards
Neil
Registered Linux User 324599
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