Roland --<div><br></div><div>The main thing is, a resultset isn't your data, it's a way to *get to* your data. At some point your process needs to iterate thru the rows that your recordset would return, and that's the part you want in your data.</div>
<div><br></div><div>It's not that you're rebuilding the data structure, you just want to get the data you need, omitting the other housekeeping items that would clutter up your results (and take time to encode).</div>
<div><br></div><div>E.g.</div><div><br></div><div> DB<3> |x $rs</div><div><div>0 DBIx::Class::ResultSet=HASH(0xc1e8460)</div><div> '_result_class' => 'WT::Model::Model::Master'</div><div> 'attrs' => HASH(0xc239ed8)</div>
<div> 'alias' => 'me'</div><div> 'where' => HASH(0xc1e55e0)</div><div> 'ix' => '-1'</div><div> 'cond' => HASH(0xc1e55e0)</div><div> -> REUSED_ADDRESS</div>
<div> 'pager' => undef</div><div> 'result_source' => DBIx::Class::ResultSource::Table=HASH(0xbbaa400)</div><div> '_columns' => HASH(0xbbaa7c0)</div><div> 'cat' => HASH(0xbb74b30)</div>
<div> 'data_type' => 'VARCHAR'</div><div> 'default_value' => undef</div><div> 'is_nullable' => 1</div><div> 'size' => 8</div>
<div> 'class' => HASH(0xbb74cb0)</div><div> 'data_type' => 'VARCHAR'</div><div> 'default_value' => undef</div><div> 'is_nullable' => 1</div>
<div> 'size' => 4</div></div><div><b>...snip...300 or more lines later...snip...</b></div><div><div> 'sqlt_deploy_callback' => 'default_sqlt_deploy_hook'</div><div> 'storage' => DBIx::Class::Storage::DBI=HASH(0xbba4470)</div>
<div> '_connect_info' => ARRAY(0xb9ae738)</div><div> 0 HASH(0xac9f618)</div><div> 'dsn' => 'dbi:mysql:dbname=wt'</div><div> 'password' => 'sekrit-goeth-thither'</div>
<div> 'user' => 'blahyaddablah'</div><div> '_dbh_details' => HASH(0xbba78b0)</div><div> empty hash</div><div> '_dbh_gen' => 0</div>
<div> '_dbi_connect_info' => ARRAY(0xab32940)</div><div> 0 'dbi:mysql:dbname=wt'</div><div> 1 'blahyaddablah'</div><div> 2 'sekrit-goeth-thither'</div>
<div> 3 HASH(0xab32860)</div><div> 'AutoCommit' => 1</div><div> 'PrintError' => 0</div><div> 'RaiseError' => 1</div><div> 'ShowErrorStatement' => 1</div>
<div> '_dbic_connect_attributes' => HASH(0xab32860)</div><div> -> REUSED_ADDRESS</div><div> '_in_dbh_do' => 0</div><div> '_sql_maker' => undef</div>
<div> '_sql_maker_opts' => HASH(0xbba78d0)</div><div> empty hash</div><div> 'savepoints' => ARRAY(0xbba4480)</div><div> empty array</div><div> 'schema' => WT::Schema=HASH(0xb93e380)</div>
<div> -> REUSED_ADDRESS</div><div> 'transaction_depth' => 0</div><div> 'source_name' => 'Master'</div><div> 'sqlt_deploy_callback' => 'default_sqlt_deploy_hook'</div>
</div><div><br></div><div>Encoding all that recordset background gunk as JSON is not going to be useful. You just need your data, and $rs->next() is a clean way to get at that.</div><div><br></div><div><br></div><div><br>
<div class="gmail_quote">On Thu, Apr 26, 2012 at 7:21 AM, Roland Philibert <span dir="ltr"><<a href="mailto:rphilibert@aptina.com">rphilibert@aptina.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-US" link="blue" vlink="purple"><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Hi Will,<u></u><u></u></span></p><p class="MsoNormal">
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Thanks for this, am not sure I understand though..<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I don’t really want to re-build the datastructure as the resultset $rs contains all relationships used by the template.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">What I want to achieve is send back $body (from my rendered TT) via JSON back to my $.ajax.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Any example on how to this and I’d be very grateful.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Thanks.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0cm 0cm 0cm"><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> will trillich [mailto:<a href="mailto:will.trillich@serensoft.com" target="_blank">will.trillich@serensoft.com</a>] <br>
<b>Sent:</b> 25 April 2012 14:53<br><b>To:</b> The elegant MVC web framework<br><b>Subject:</b> Re: [Catalyst] TT via AJAX<u></u><u></u></span></p></div><div><div class="h5"><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">
Roland --<u></u><u></u></p><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Assuming your JSON view is trying to encode the 'result' item from your stash, first let's see why encoding a blessed object is fraught with peril.<u></u><u></u></p>
</div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Try running your server in debug mode, and when you get to the ->stash() line, try "x $rs". You really want all that JSON-encoded?<u></u><u></u></p>
</div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Blessed objects (such as a recordset or a request or a response) typically contain many, many layers that are often going to be overkill when encoding stuff as JSON, when really you just want a few top-level items.<u></u><u></u></p>
</div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">So you should iterate through your objects and/or collections and create a hashref that contains plain primitives (or maybe a few more hashrefs or arrayrefs when needed) instead of asking JSON to translate blessed objects that are dozens of layers deep.<u></u><u></u></p>
</div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Instead of doing ...->stash( result => [ $rs ] ) build your own data structure, by doing something like<u></u><u></u></p></div><div>
<p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">my $json = {<u></u><u></u></p></div><div><p class="MsoNormal"> data => [],<u></u><u></u></p></div><div><p class="MsoNormal"> count=> $rs->count,<u></u><u></u></p>
</div><div><p class="MsoNormal"> other => $self->blah,<u></u><u></u></p></div><div><p class="MsoNormal">};<u></u><u></u></p></div><div><p class="MsoNormal">while ( my $rec = $rs->next ) {<u></u><u></u></p></div>
<div><p class="MsoNormal"> my %fields = $self->get_important_values( $rec );<u></u><u></u></p></div><div><p class="MsoNormal"> push @{ $json->{data} }, { %fields );<u></u><u></u></p></div><div><p class="MsoNormal">
}<u></u><u></u></p></div><div><p class="MsoNormal">$c->stash( result => $json );<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">
<u></u> <u></u></p><div><p class="MsoNormal">On Wed, Apr 25, 2012 at 8:26 AM, Roland Philibert <<a href="mailto:rphilibert@aptina.com" target="_blank">rphilibert@aptina.com</a>> wrote:<u></u><u></u></p><div><div><p class="MsoNormal">
<span lang="EN-GB">Hello all,</span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB">I’d like to render some HTML content being formatted from a TT view via AJAX.<br>Can anybody recommend a way to do that please?</span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-GB"> </span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB">The method I am using now for AJAX is REST controller and JSON View.</span><u></u><u></u></p><p class="MsoNormal">
<span lang="EN-GB"> </span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB">...</span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB">sub ajaxaction :Local :ActionClass('REST') {}</span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-GB"> </span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB">sub ajaxaction _GET {</span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB"> </span><u></u><u></u></p><p class="MsoNormal">
<span lang="EN-GB"> my ($self, $c) = @_;</span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB"> my $rs = $c->model(DN)->resultset(Table)->find(...);</span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-GB"> my $body = $c->view(MYTT)->render($c,'dir/temp.mailtt',$c->stash( result => [ $rs ] )); </span><span lang="EN-GB" style="font-family:Wingdings;background:yellow">ß</span><span lang="EN-GB" style="background:yellow"> this is the weird bit I guess.</span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-GB"> my @content =();</span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB"> push @content, $body;</span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB"> $self->status_ok(</span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-GB"> $c,</span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB"> entity => \@content,</span><u></u><u></u></p><p class="MsoNormal">
<span lang="EN-GB"> );</span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB">}</span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB">sub end :Private {</span><u></u><u></u></p><p class="MsoNormal">
<span lang="EN-GB"> my ($self, $c) = @_;</span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB"> $c->forward("View::JSON");</span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB">}</span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-GB"> </span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB">..but doing this I get the error:</span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB"> </span><u></u><u></u></p>
<p class="MsoNormal">Caught exception in MyApp::View::JSON->process "encountered object 'MyApp::Model::DB::Table=HASH(0xdb2c330)', but neither allow_blessed nor convert_blessed settings are enabled at (eval 1606) line 151."<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p><p class="MsoNormal">Thanks for your help.<u></u><u></u></p><p class="MsoNormal">Roland<u></u><u></u></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><u></u><u></u></p><p class="MsoNormal"><span lang="EN-GB"> </span><u></u><u></u></p></div></div><pre>Aptina (UK) Limited, Century Court, Millennium Way, Bracknell, Berkshire, RG12 2XT. Registered in England No. 06570543.<u></u><u></u></pre>
<pre><u></u> <u></u></pre><pre>This e-mail and any attachments contain confidential information and are solely for the review and use of the intended recipient. If you have received this e-mail in error, please notify the sender and destroy this e-mail and any copies.<u></u><u></u></pre>
<pre><u></u> <u></u></pre><p class="MsoNormal" style="margin-bottom:12.0pt"><br>_______________________________________________<br>List: <a href="mailto:Catalyst@lists.scsys.co.uk" target="_blank">Catalyst@lists.scsys.co.uk</a><br>
Listinfo: <a href="http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst" target="_blank">http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst</a><br>Searchable archive: <a href="http://www.mail-archive.com/catalyst@lists.scsys.co.uk/" target="_blank">http://www.mail-archive.com/catalyst@lists.scsys.co.uk/</a><br>
Dev site: <a href="http://dev.catalyst.perl.org/" target="_blank">http://dev.catalyst.perl.org/</a><u></u><u></u></p></div><p class="MsoNormal"><br><br clear="all"><u></u><u></u></p><div><p class="MsoNormal"><u></u> <u></u></p>
</div><p class="MsoNormal" style="margin-bottom:12.0pt">-- <br><span style="font-family:"Verdana","sans-serif";background:white">"We act as though comfort and luxury were the chief requirements of life, when all that we need to make us happy is something to be enthusiastic about." -- Albert Einstein</span><u></u><u></u></p>
</div></div></div></div></div><div class="HOEnZb"><div class="h5">
<pre>Aptina (UK) Limited, Century Court, Millennium Way, Bracknell, Berkshire, RG12 2XT. Registered in England No. 06570543.
This e-mail and any attachments contain confidential information and are solely for the review and use of the intended recipient. If you have received this e-mail in error, please notify the sender and destroy this e-mail and any copies.
</pre></div></div><br>_______________________________________________<br>
List: <a href="mailto:Catalyst@lists.scsys.co.uk">Catalyst@lists.scsys.co.uk</a><br>
Listinfo: <a href="http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst" target="_blank">http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst</a><br>
Searchable archive: <a href="http://www.mail-archive.com/catalyst@lists.scsys.co.uk/" target="_blank">http://www.mail-archive.com/catalyst@lists.scsys.co.uk/</a><br>
Dev site: <a href="http://dev.catalyst.perl.org/" target="_blank">http://dev.catalyst.perl.org/</a><br>
<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><span style="font-family:verdana;background-color:rgb(255,255,255)">"We act as though comfort and luxury were the chief requirements of life, when all that we need to make us happy is something to be enthusiastic about." -</span><span style="font-family:verdana;background-color:rgb(255,255,255)">- Albert Einstein</span><br style="font-family:verdana;background-color:rgb(255,255,255)">
<br>
</div>