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POHow can I use JSON and Perl (HTML::Mason) to create dynamic web page with AJAX?
 

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  1. POHow can I use JSON and Perl (HTML::Mason) to create dynamic web page with AJAX?
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    <p>I'm some kind of lost with the way i have to deal with Javascript, JSON and Perl and most of the examples are in PHP which is not helpfull for me.</p> <p>I have a page (called main.html) where i have a with data from MySQL and i have an option to delete a row by id.</p> <p>Then i have the Javascript sending the id to page apagar.html which is some kind mess now cos i was trying to deal with JSON, but with GET it works, and what is missing is a refresh after the delete request. But i wanted to introduce JSON in my code and make the page more dinamic but don't know how. </p> <p>And in my apagar.html i have only the code to delete if there is any id in the url.</p> <p>I have read the IBM Series (Mastering Ajax) : <a href="http://www.ibm.com/developerworks/web/library/wa-ajaxintro11.html?S_TACT=105AGX08&amp;S_CMP=EDU" rel="nofollow noreferrer">http://www.ibm.com/developerworks/web/library/wa-ajaxintro11.html?S_TACT=105AGX08&amp;S_CMP=EDU</a></p> <p>Thank you for your help, above is the javascript i'm using:</p> <pre><code>&lt;script language="javascript" type="text/javascript"&gt; var pedido = false; // pedido = request try { pedido = new XMLHttpRequest(); } catch (failed) { pedido = false } if (!pedido) { alert("O seu browser não é suportado."); // Browser not supported } function Eliminar(rid) { // relativo a main.html &amp; apagar.html //alert("SK"); //debug if ( confirm("Deseja realmente eliminar?") ) { var url = "/back/apagar.html?rid=" + escape(rid); /*POST*/ pedido.open("POST", url, true); pedido.onreadystatechange = updatePage; pedido.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); pedido.send( contacto.toJSONString() ); //pedido.open("GET", url, true); //pedido.send(null); } return false; } </code></pre> <p>AND the Mason apagar.html page</p> <pre><code>&lt;%args&gt; $rid =&gt; '' &lt;/%args&gt; &lt;%once&gt; use lib '/var/www/projectox/'; use db::Conexao; #interacao com a DB use DBI; use Apache2::Cookie; #interacao com cookies &lt;/%once&gt; &lt;%init&gt; % # vê se existem cookies my $cookies = Apache2::Cookie-&gt;fetch($r); if(!$cookies){ #sem cookies é enviado para o login $m-&gt;redirect('login.html'); } if($rid) { # vai eliminar os dados pelo valor do id ($rid) #ligacao à DB my $tomada = db::Conexao-&gt;Conexao(); my $sql = $tomada-&gt;prepare("Delete from Contactos where id=?") || die "Impossivel de realizar a operação: $!"; $sql-&gt;execute($rid) || die "Não foi possivel executar: $!"; #desliga da DB $tomada-&gt;disconnect || warn "Não foi possivel terminar a ligação!"; &lt;/%init&gt; </code></pre>
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