CGI::Portal::Scripts - Building Applications
package CGI::Portal::Scripts::some_name;
use CGI::Portal::Scripts;
use vars qw(@ISA);
@ISA = qw(CGI::Portal::Scripts);
1;
sub launch {
my $self = shift;
....
}
package CGI::Portal::Scripts::some_name;
use CGI::Portal::Scripts;
use CGI::Portal::Scripts::other_name;
use vars qw(@ISA);
@ISA = qw(CGI::Portal::Scripts);
1;
sub launch {
my $self = shift;
....
bless $self, "CGI::Portal::Scripts::other_name";
$self->launch;
}
CGI::Portal applications are build by creating modules that reside in the
CGI::Portal::Scripts namespace and extend CGI::Portal::Scripts. These modules
must provide a subroutine launch() that CGI::Portal calls as an object method to
run your modules code.
A subroutine new() is not necessary or helpful as you are extending CGI::Portal::Scripts.
In your modules, do not print() or exit(). Instead of "print"ing append to $self->{'out'}
or $self->{'cookies'} and instead of "exit"ing, "return" from launch().
Extending CGI::Portal::Scripts, gives you access to an object with the following attributes.
$self->{'conf'} references a hash containing all values as set in the startup script.
$self->{'in'} references a hash containing all input parameters, stripped off any HTML tags.
$self->{'user'} is set by $self->authenticate_user() if logon succeeds.
$self->{'rdb'} is a CGI::Portal::RDB database object holding a database handle.
$self->{'out'} supposed to collect all output.
$self->{'cookies'} collects cookie headers you might want to set. It is also used for Sessions, so you might want to append to it.
$self->authenticate_user() takes no arguments and does not return anything. It sets
$self->{'user'} and starts a session if user logon succeeds. If user logon fails
it writes the HTML for a logon form to $self->{'out'}. It also maintains the sessions
during subsequent calls.
$self->authenticate_user();
return unless $self->{'user'};
....
$self->logoff() takes no arguments and does not return anything. It removes the current
users session id from the database and unsets the session cookie.
$self->{'rdb'}->exec($sql) is an object method for the database object. It takes a SQL
statement as argument and returns a DBI statement handle.
The database handle can be directly retrieved from $self->{'rdb'}{'dbh'}.
$self->{'rdb'}->escape(@values) takes an array of SQL values. It uses DBI's quote() on those
values and returns them as a string seperated by commas.
Alexander David P