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implement client/server side script form validation.

Posted on 2006-11-02
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Last Modified: 2013-11-18
I have this perl script that I need to add some details. Somebody can help me please.

#!/Perl/bin/perl
# Program to read information sent to the server
# from the form in the contact_list.xhtml document.

use CGI qw( :standard );
use DBI;

$dtd =
"-//W3C//DTD XHTML 1.0 Transitional//EN\"
   \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";

print( header() );
print( start_html( { dtd    => $dtd,
                     title  => "Order Response" } ) );

# generic variable to hold output message for user, with default success value
my $message = "<b>Order successful!  <br /> Thanks!</b>";

# try updating database
# open connection to Access database
# no passwords on our database
$databaseHandle = DBI->connect('dbi:ODBC:KTC');

# server-side check of quantity
$requestedQuantity = param( "quantity" );
my $check=quantityValid();
if ( ! $check ) {
   # @TODO add not available message here
} else {
   $customerID=param("customer_id");
   $productID=param("product_id");
   $quantity=param("quantity");
   $deliveryDate=param("delivery_date");

   $query1 = "INSERT INTO Orders (CustomerID, ProductID, OrderQuantity, RequestedShipDate)
              VALUES (?,?,?,?)";

   my $insertHandle = $databaseHandle->prepare_cached($query1);
   die "Couldn't prepare insert query; aborting "
      unless defined $insertHandle;

   my $success = 1;
   $success &&= $insertHandle->execute($customerID,$productID,$quantity,$deliveryDate);

   # autocommit is on, so no need to commit
   # my $result = ($success ? $databaseHandle->commit : $databaseHandle->rollback);
   unless ($success) {
      die "Couldn't finish transaction: " . $databaseHandle->errstr
   }

   $insertHandle->finish();
}

$databaseHandle->disconnect();

print( $message );
print( end_html() );


sub quantityValid {

   # use ProductID to find a product name

   $productID=; # @TODO get product ID from web page

   $query1 = ; #@TODO add query to product table

   $statementHandle1 = # @TODO prepare query with existing database handle
   # @TODO execute query and loop through results
   #       put available amount into $availAmount

   # @TODO test quantity and return 1 (for true) is ok
   #                         return 0 (for false) if not ok

}






The OBJECTIVE is to implement client/server side script form validation.


The Order table contains the following fields which should be populated by our code:

OrderID, long integer, primary key
CustomerID, long integer, foreign key
ProductID, long integer, foreign key
InvoiceID, long integer, foreign key
ShipmentID, long integer, foreign key
OrderDate, Date/Time
OrderQuantity, Number
OrderCost, Currency
RequestedShipDate, Date/Time



 


 
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Comment
Question by:ruthangel
  • 2
  • 2
4 Comments
 
LVL 16

Accepted Solution

by:
manav_mathur earned 500 total points
Comment Utility
# @TODO add not available message here
$message = "Quantity not available" ;
 $productID=; # @TODO get product ID from web page
$product_id = param("product_id");

I can only see you order table. What tabel stores the amount available??
0
 
LVL 16

Expert Comment

by:manav_mathur
Comment Utility
The query you would build be similar to the update query.
After running the querym you'll get the rows throrugh the fetch
my $availAmount
$sth = $dbh->prepare_cached($query);
$rv = $sth->execute;
while($sth->fetchrow_hashref) {
    $availAmount += $_->{'amount_field'}
}
0
 

Author Comment

by:ruthangel
Comment Utility
Hi Manav, thanks. But what do you think that goes here?

$query1 = "INSERT INTO Orders (CustomerID, ProductID, OrderQuantity, RequestedShipDate)
              VALUES (?,?,?,?)";

About this values (????)

Do you know how to set up this?
 # @TODO test quantity and return 1 (for true) is ok
   #                         return 0 (for false) if not ok



thank you
0
 

Author Comment

by:ruthangel
Comment Utility
About here, right in the end of the code

What query goes here? is that one: $query1 = "INSERT INTO Orders (CustomerID, ProductID, OrderQuantity, RequestedShipDate)
                                                    VALUES (?,?,?,?)";


   $query1 = ; #@TODO add query to product table

And here is that loop you taked about before? I am new in perl, I just want to understand these statments. Thank you so much

   $statementHandle1 = # @TODO prepare query with existing database handle
   # @TODO execute query and loop through results
   #       put available amount into $availAmount

   # @TODO test quantity and return 1 (for true) is ok
   #                         return 0 (for false) if not ok

}
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