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POhow can i store an object in perl session
 

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  1. POhow can i store an object in perl session
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    <p>I am having an Emp (class) object with fields <code>name</code>, <code>id</code> and <code>password</code>:</p> <pre><code>$emp = new Emp({name=&gt;'pavan', id=&gt;101, password=&gt;'05cc11'}); $serializble = freeze($emp); </code></pre> <p>Storing in session:</p> <pre><code>$session-&gt;param("emp",$serializble); </code></pre> <p>But when I open the session object which is stored in the tmp directory, the emp value is <code>undef</code>. </p> <h3>Update</h3> <p>Updated after using Storable to serialize the object.</p> <pre><code>$serializble = freeze($emp); $session-&gt;param("emp",$serializble); </code></pre> <p>this is the session file (with added line breaks for readability):</p> <pre><code>$D = {'_SESSION_ID' =&gt; 'dd75c6042893334a6bf26794b4ce5c74', '_SESSION_ATIME' =&gt; 1356628765, 'emp' =&gt; '^D^G^D1234^D^D^D^H^Q^CPEmp^C^B^@^@^@ ^Epavan^D^@^@^@name^H�^B^@^@^@id', '_SESSION_REMOTE_ADDR' =&gt; '127.0.0.1', '_SESSION_CTIME' =&gt; 1356628765};;$D </code></pre> <p>When I try to return the object from the session it returns <code>undef</code>:</p> <pre><code>$recoverable = thaw($session-&gt;param('emp'); print $recoverable; </code></pre> <p>here is my total code</p> <p><strong>Emp class:</strong></p> <pre><code>package Emp; sub new{ my ($class, $args) = @_; my $self = bless{}, $class; $self-&gt;{name} = $args-&gt;{name}; $self-&gt;{id}=$args-&gt;{id}; return $self; } sub getEmpname{ my $self = shift; return $self-&gt;{name}; } 1; </code></pre> <p><strong>emp.cgi</strong></p> <pre><code>$query = new CGI(); $session = new CGI::Session("driver:File", undef, {Directory =&gt; "/tmp"}); $emp = new Emp( { name =&gt; $query-&gt;param('username'), id =&gt; 101 } ); my $serialized = freeze($emp); $session-&gt;param("emp", $serialized); $login = $emp-&gt;getEmpname(); #it is the method of Emp class $cookie = $query-&gt;cookie( -name =&gt; $login, -value =&gt; $session-&gt;id, -expires =&gt; '+3M', ); print $query-&gt;header( -type =&gt; 'text/html', -cookie =&gt; $cookie, ); </code></pre> <p><strong>welcome.cgi</strong></p> <pre><code>$q = new CGI(); $sid = $q-&gt;cookie('login') || $q-&gt;param('login') || undef; $session = new CGI::Session(undef, $sid, {Directory=&gt;'/tmp'}); print $q-&gt;header('text/html'); print $q-&gt;start_html('title'); print "&lt;br&gt;"; print Dumper $session-&gt;param('emp'); my $emp = thaw( $session-&gt;param('emp') ); //which is saved in session object. print $emp-&gt;getEmpname(); print end_html; </code></pre>
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    1. USpavan
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    1. COWhat is $session?
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    2. COIt is an session object where my emp object is stored.
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      1. USpavan
 

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