Validating against DB

10/26/2010 12:58 pm | #1 fdotmedia

I have a total number of people allowed in a class... I would like to have the class disappear from the dynamic drop down based on wether the count is <= 25...

This is what I have so far, I'm thinking there's an easier way using our WA tools...

<?php 
do {  
?>
<option value="<?php echo $row_ClassDetails['CDID']; ?>" >
  <?php
        $mysqldate = $row_ClassDetails['CDDate']; 
	$mydate = date("M, d Y",strtotime($mysqldate)); 
	echo $mydate;
  ?> -
  <?php echo $row_ClassDetails['CDName']; ?> - 
  <?php
    $cdid = $row_rtnUser['CDID'];

    $sql = "SELECT COUNT(CDID) AS total FROM rtnUser WHERE CDID = $cdid"; 
    $query = mysql_query($sql);
    $recordset = mysql_fetch_assoc($query);
    $count = $recordset["total"];

    echo "$count";
?> of <?php echo $row_ClassDetails['CDMaximum']; ?> max.
</option>
<?php
} while ($row_ClassDetails = mysql_fetch_assoc($ClassDetails));
?>

This returns a "1" for all of the 7 classes.

The first class has a single user, the rest have 0...

Any help would be great!

Ted

10/26/2010 1:22 pm | #2 Jason ByrnesWebAssist

This isn't something the webassist tools can make any easier.

The count function counts the number of rows returned.

how are you storing the registered users?

Looking at your sql, it seams logical that it would return 1 for each of them.

10/26/2010 2:31 pm | #3 fdotmedia

Thanks for the reply Jason... I was assuming that the Server Validation may have some use here... Apparently no :-)...

I am returning the user in the 'rtnUser' recordset and using the 'CDID' row in both the 'ClassDetails' and 'rtnUsers' tables... Do I need to left join the 2 tables together?

10/26/2010 3:04 pm | #5 fdotmedia

rtnUsers table

`rtnUser` (
  `rtnUID` int(10) NOT NULL auto_increment,
  `rtnFName` varchar(255) NOT NULL,
  `rtnLName` varchar(255) NOT NULL,
  `rtnDOB` varchar(255) default NULL,
  `rtnSSN` varchar(255) default NULL,
  `rtnState` varchar(255) NOT NULL,
  `rtnCity` varchar(255) NOT NULL,
  `rtnEmail` varchar(255) NOT NULL,
  `rtnPassword` varchar(255) NOT NULL,
  `rtnPhone` varchar(255) NOT NULL,
  `rtnPhone2` varchar(255) default NULL,
  `rtnZipcode` varchar(255) default NULL,
  `rtnReferred` varchar(255) default NULL,
  `CTDID` int(10) default NULL,
  `rtnCourtOther` varchar(255) default 'none',
  `rtnCase` varchar(255) default NULL,
  `CDID` int(10) default NULL,
  `rtnPaid` varchar(255) default 'no',
  `FDID` int(10) NOT NULL,
  `rtnUserLevel` int(10) NOT NULL default '1',
  PRIMARY KEY  (`rtnUID`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8 AUTO_INCREMENT=81 ;

ClassDetails table

`ClassDetails` (
  `CDID` int(10) NOT NULL auto_increment,
  `FID` int(10) NOT NULL,
  `CDName` varchar(255) NOT NULL,
  `CDAddress` varchar(255) NOT NULL,
  `CDCity` varchar(255) NOT NULL,
  `CDState` varchar(255) NOT NULL,
  `CDZipcode` varchar(255) NOT NULL,
  `CDPhone` varchar(255) NOT NULL,
  `CDPrice` varchar(255) NOT NULL,
  `CDDate` date NOT NULL,
  `CDStartTime` varchar(255) NOT NULL,
  `CDLastTime` date default NULL,
  `CDLength` varchar(255) NOT NULL,
  `CDMaximum` int(3) default NULL,
  PRIMARY KEY  (`CDID`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 AUTO_INCREMENT=15 ;

10/27/2010 6:39 am | #7 fdotmedia

When I use the following code, I get 4... 4 is the total number of records I have in the db... only 1 has a class assigned to them...

<?php 
do {  
?>
<option value="<?php echo $row_ClassDetails['CDID']; ?>" >
<?php
$mysqldate = $row_ClassDetails['CDDate']; 
$mydate = date("M, d Y",strtotime($mysqldate)); 
echo $mydate;
?> -
<?php echo $row_ClassDetails['CDName']; ?> - <?php
$cdid = $row_rtnUser['CDID'];
$rtnUID = $row_rtnUser['rtnUID'];

$sql = "SELECT COUNT(CDID) AS total FROM rtnUser GROUP BY CDID"; 
$query = mysql_query($sql);

$count=0;
while ($recordset = mysql_fetch_assoc($query))
{
   $count++;
}
echo "$count";
?> of <?php echo $row_ClassDetails['CDMaximum']; ?> max.
</option>
<?php
} while ($row_ClassDetails = mysql_fetch_assoc($ClassDetails));
?>

10/27/2010 7:18 am | #8 fdotmedia

I think I'm making it too hard...

All I need to do is count the number of users with a CDID = 'whatever' and not display the class in my dynamic dropdown...

On that same page, in a different query, I compare NOW() < `CDLastTime`

SELECT * FROM ClassDetails WHERE NOW() < `CDLastTime` ORDER BY ClassDetails.CDDate ASC

The idea behind that is, if the class start time is INSIDE 48 hours (or whatever the 'CDLastTime' is) it doesn't show... So maybe I use the same strategy and not display the class once the users total >= `CDMaximum`...

The problem(?) is, the 'CDMaximum' row is in the 'ClassDetails' table and the 'CDID' row I'm counting is in the 'rtnUser' table... Does it make sense to do something like this?

SELECT * FROM rtnUser LEFT JOIN ClassDetails on rtnUser.CDID = ClassDetails.CDID COUNT(rtnUID) AS total FROM rtnUser GROUP BY CDID

In which case, do I need to LEFT JOIN the 'ClassDetails' and 'rtnUser' tables then count the CDID??? Or can I because the 'ClassDetails' table has a different CDID count???

Your thoughts?

10/27/2010 7:50 am | #10 fdotmedia

here is my DB and .php page...

the dynamic dropdown in question is line 456

Any help you could muster would rock!

Ted

Attached Files

Step1-ClassDetails-rtnUser.zip

Technical Support Forums

Free, outstanding support from WebAssist and your colleagues

Validating against DB

10/26/2010 12:58 pm | #1 fdotmedia