Dancer2 serializer mutable

perl_help27 has asked for the wisdom of the Perl Monks concerning the following question:

hello monks, I am trying to run this basic app in perl:

use Dancer2;
set serializer => 'Mutable';
get '/user/:id' => sub {
    my $id   = params->{id};
    return { id => $id, name => 'frank' };
}
dance;
[download]

I then call this url curl -H 'Accept-Type: text/xml' http://localhost:5000/user/1 I expect it to return <data name="franck" id="1" /> But instead I am receiving this error:

 {"id" => 1,"name" => "frank"} did not pass type constraint "Value" (i
+n $self->{"content"})
    "Value" is defined as: (defined($_) and not ref($_)) in /usr/local
+/share/perl5/Dancer2/Core/App.pm l. 1473
[download]

I am running hopeless!! Any help would do. Thanks

Comment on Dancer2 serializer mutable Select or Download Code

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Re: Dancer2 serializer mutable by choroba (Cardinal) on Nov 08, 2018 at 21:22 UTC
Note that XML isn't supported by Dancer2::Serializer::Mutable, it handles JSON, YAML, and Data::Dumper only. It works for me when I specify `curl -H 'Accept: application/json' http://localhost:3000/user/1` [download] i.e. I use `Accept` instead of `Accept-Type` (`Content-Type` works, too), and I switch to a supported output format. Update: The code mentions XML, but it seems to treat it the same way as HTML, i.e. it needs a template to fill with the data. I tried to create a new XML serializer, but I don't understand all the details, so I wasn't successful. ($q=q:Sq=~/;[c](.)(.)/;chr(-\|\|-\|5+lengthSq)`"S\|oS2"`map{chr \|+ord }map{substrSq`S_+\|`\|}3E\|-\|`7**2-3:)=~y+S\|`+$1,++print+eval$q,q,a, [download]	[reply] [d/l] [select]
Re^2: Dancer2 serializer mutable by perl_help27 (Acolyte) on Nov 08, 2018 at 22:20 UTC
Thank you LOTS for your answer... this call works however curl -H 'Accept: text/x-yaml' http://localhost:3000/user/1 doesn't return anything either:S do you know why?	[reply]
Re^3: Dancer2 serializer mutable by choroba (Cardinal) on Nov 08, 2018 at 22:25 UTC
It doesn't return anything to me, either. Maybe a specific YAML library is needed? You can always report a bug against Dancer2. ($q=q:Sq=~/;[c](.)(.)/;chr(-\|\|-\|5+lengthSq)`"S\|oS2"`map{chr \|+ord }map{substrSq`S_+\|`\|}3E\|-\|`7**2-3:)=~y+S\|`+$1,++print+eval$q,q,a, [download]	[reply] [d/l]
Re^4: Dancer2 serializer mutable by perl_help27 (Acolyte) on Nov 08, 2018 at 22:29 UTC
Re: Dancer2 serializer mutable by MrCromeDome (Deacon) on Nov 14, 2018 at 22:57 UTC
Hey, good news! This should be possible in the newly-released 0.207000 release of Dancer2. Contact me with any issues.	[reply]
Re^2: Dancer2 serializer mutable by Your Mother (Archbishop) on Nov 14, 2018 at 23:08 UTC
I was actually impressed and pleasantly surprised that Dancer did not support XML, FWIW. Oh, wells.	[reply]