- dancer-users - lists.preshweb.co.uk

Re: [Dancer-users] What's my route handler?
by David Cantrell 15 Feb '12

15 Feb '12

On Wed, Feb 15, 2012 at 10:40:36AM -0600, Franklin Bristow wrote: > While I haven't actually used it personally (my app doesn't require roles), > I think that Dancer::Plugin::Auth::RBAC ( > http://search.cpan.org/dist/Dancer-Plugin-Auth-RBAC/) does what you're > hoping to achieve. It appears that that needs to be told explicitly when you try to authenticate what it is that the user is trying to do, and so either the call to the authentication code needs to be done inside the route handler (cos that's what knows what the user is trying to do, but this is unnecessary duplication of code), or if I use a 'before' hook, the hook needs to be able to figure that out from the URL (which is also unnecessary duplication of code). Hence why I thought of using subroutine attributes on the route handlers. Once I've got a list of those subroutine attributes, I could well end up using that plugin to do the actual authentication. -- David Cantrell | London Perl Mongers Deputy Chief Heretic You can't spell "slaughter" without "laughter"

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finding Dancer::before
by Puneet Kishor 13 Feb '12

13 Feb '12

Since I upgraded to the latest version of Dancer, I get the following message Dancer::before has been deprecated since version 1.3080. use hooks! at /opt/local/lib/perl5/site_perl/5.14.1/Dancer.pm line 118 Except, as far as I can tell, I have not used `before` anywhere. Perhaps one of the plugins I am using... except, the only plugin I am using is Dancer::Plugin::Database; which is the latest version (1.80). Any suggestions as to how I can locate this offending `before` and change it? -- Puneet Kishor

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strangeness with Dancer prefix and apache proxy
by Puneet Kishor 05 Feb '12

05 Feb '12

I have the following in my apache2 conf file <VirtualHost *:80> ServerName my.computer.edu DocumentRoot "/path/to/Sites" <Proxy *> Options FollowSymLinks MultiViews AllowOverride All Order allow,deny allow from all </Proxy> SetEnv force-proxy-request-1.0 1 SetEnv proxy-nokeepalive 1 ProxyPreserveHost On ProxyPass /d/apps http://127.0.0.1:25012 ProxyPassReverse /d/apps http://127.0.0.1:25012 </VirtualHost> When I go to http://my.computer.edu/d/apps/js/app.js the log shows request: GET //js/app.js from 127.0.0.1 in ../Dancer/Handler.pm l. 52 When I go to http://127.0.0.1:25012/js/app.js the log shows request: GET /js/app.js from 127.0.0.1 in ../Dancer/Handler.pm l. 52 Why do I get to leading slashes in the first request above? Additionally, when I go to http://my.computer.edu/d/apps I get a correct response (the double slashes notwithstanding). However, when I go to http://my.computer.edu/d/apps/foo then I get a 404. My perl code is like so package apps; use Dancer ':syntax'; use Dancer::Plugin::Database; load_app 'eb', prefix => '/foo'; -- Puneet Kishor

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New hooks and extensibility in Dancer::Plugin::Database
by David Precious 04 Feb '12

04 Feb '12

Hi all, A developer version of Dancer::Plugin::Database went to CPAN last night (1.70_01) with a few new features requested by Nick S. Knutov: New hooks: - database_connect_failed - fired when an attempt to connect to the database fails - database_connection_lost - fired when we realise that a database handle is no longer usable (the connection went away) - database_error - fired when any database error is raised by DBI (implemented using DBI's HandleError, so it will catch all SQL errors etc regardless of whether you were using D::P::D's convenience methods or running your own queries direct). Extensibility: - New "handle_class" configuration option allows you to set which class the handle will be blessed into, so you can subclass Dancer::Plugin::Database::Handle and have handles blessed into your subclass instead, so you can add your own custom features etc. Please feel free to test the developer release if you have time, feedback would be welcomed. Once I see decent CPAN testers results come back, I'll get a new stable version out in the next few days. Cheers Dave P -- David Precious ("bigpresh") <davidp(a)preshweb.co.uk> http://www.preshweb.co.uk/ www.preshweb.co.uk/twitter www.preshweb.co.uk/linkedin www.preshweb.co.uk/facebook www.preshweb.co.uk/cpan www.preshweb.co.uk/github

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Issues with Dancer-Plugin-NYTProf
by Angel Arancibia 03 Feb '12

03 Feb '12

Hi, early today we where discussing this extrange issue with Bigpresh on the IRC. After some fix this is now the situtation. Apache throw: Tue Jan 31 18:15:06 2012] [error] [client 192.168.2.82] Error while loading /home/mg/Mg/bin/app.pl: Devel/NYTProf.pm did not return a true value at /usr/local/share/perl/5.10.1/Dancer/Plugin/NYTProf.pm line 82.\nCompilation failed in require at /home/mg/Mg/lib/Mg.pm line 13.\nBEGIN failed--compilation aborted at /home/mg/Mg/lib/Mg.pm line 13.\nCompilation failed in require at /home/mg/Mg/bin/app.pl line 3.\nBEGIN failed--compilation aborted at /home/mg/Mg/bin/app.pl line 3.\n, referer: http://mg.www.dancer-server.local/es/ [Tue Jan 31 18:15:06 2012] [error] [client 192.168.2.82] Error while loading /home/mg/Mg/bin/app.pl: Devel/NYTProf.pm did not return a true value at /usr/local/share/perl/5.10.1/Dancer/Plugin/NYTProf.pm line 82.\nCompilation failed in require at /home/mg/Mg/lib/Mg.pm line 13.\nBEGIN failed--compilation aborted at /home/mg/Mg/lib/Mg.pm line 13.\nCompilation failed in require at /home/mg/Mg/bin/app.pl line 3.\nBEGIN failed--compilation aborted at /home/mg/Mg/bin/app.pl line 3.\n, referer: http://mg.www.dancer-server.local/es/ [Tue Jan 31 18:15:07 2012] [error] [client 192.168.2.82] Error while loading /home/mg/Mg/bin/app.pl: Attempt to reload Mg.pm aborted.\nCompilation failed in require at /home/mg/Mg/bin/app.pl line 3.\nBEGIN failed--compilation aborted at /home/mg/Mg/bin/app.pl line 3.\n, referer: http://mg.www.dancer-server.local/es/ Background information - Dancer 1.3091 - Dancer-Plugin-NYTProf: the very lastone from Bigpresh repo in github. - Devel::NYTProf (4.06) - apache2: Server version: Apache/2.2.16 (Debian) Server built: Mar 22 2011 20:56:34 (runnign as user www-data) - SO: Debian GNU/Linux 6.0 (Squeeze) /home/mg/Mg/environments/development.yml plugins: DBIC: ... NYTProf: profdir: '/tmp/profiledata' /tmp/profiledata has some files: (CHROOT SQUEEZE)root@mg-domu:/tmp# ls -l profiledata/ total 660 drwxr-xr-x 2 www-data www-data 4096 ene 31 18:17 html -rw-r--r-- 1 www-data www-data 338802 ene 31 18:17 nytprof.out..21573 -rw-r--r-- 1 www-data www-data 319765 ene 31 18:18 nytprof.out.es_s_.21574 Any help would be appreciated. Angel

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Plat_Forms 2012 programming contest
by Lars Dɪᴇᴄᴋᴏᴡ 迪拉斯 31 Jan '12

31 Jan '12

Crossposted: catalyst(a)lists.scsys.co.uk, dancer-users(a)perldancer.org, mojolicious(a)googlegroups.com, psgi-plack(a)googlegroups.com, https://www.perl-community.de/bat/poard/thread/17120 Hello Perl web programmers, the organisers of the [Plat_Forms contest](http://plat-forms.org/platforms-2012) have published the call for application. See the [announcement overview](http://plat-forms.org/platforms-2012-announcement#overview) for why this contest is very important for the community as a whole. Once again, Perl's esteem is at stake. ☺ Up to 4 teams comprised of 3 members each are needed to represent our favourite programming language. Like in the preceding contests in 2007 and 2011, the Perl teams are likely self-organised and not company-backed. To facilitate that, I have set up [a page on the official Perl 5 wiki](https://www.socialtext.net/perl5/events_2012_plat_forms). Action required: 1. Communicate as you see fit and form more teams. 2. Post summaries to the wiki page to keep everyone updated. 3. Fill in the [application Web form](http://plat-forms.org/platforms-2012-application).

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Problem with Dancer::Plugin::Ajax under Plack
by Gurunandan Bhat 30 Jan '12

30 Jan '12

I am trying to run multiple Dancer apps under Plack, One of my routes is an "ajax" route using Dancer::Plugin::Ajax My $app inside the psgi file is defined as: my $app = sub { local $ENV{DANCER_APPDIR} = 'MyAppDir'; setting appdir => 'MyAppDir'; load_app "MyApp"; Dancer::App->set_running_app('MyApp'); Dancer::Config->load; my $request = Dancer::Request->new( env => $env ); Dancer->dance($request); }; Unfortunately, the "ajax" route is not recognised and it gives me a 404 However I find that when I add Dancer::Handler->init_request_headers($env); in the sub, the Ajax route works fine. Dancer::Handler docs are not available and I need to understand why this works Would appreciate if someone could explain Thank you

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Simple Dancer OO approach.
by Роман Галеев 27 Jan '12

27 Jan '12

Simple Dancer OO approach. The idea is simple -- we need to defer route handler declaration. It could be done with re-definition Dancer DSL words like get, post, any, etc. It's done in Dancer::OO::Dancer module. Deferred declarations are stored in package _handler array variable. This approach allows to define and use common handlers and to write extendable modules that could be mounted to later declared uris. To use this deferred technique package must be inherited from Dancer::OO::Object package, which sole purpose is to install deffered handlers. It does so by building inheritnance tree and calling Dancer::* methods with obvious alterations. Handlers are installed to prefixed routes, thus limiting the route syntax to simple strings. I've included a sample Sample application, which has common Sample::Base for Sample::Root and Sample::Demo packages. https://github.com/jamhed/Dancer-OO -- With best regards, Roman Galeev

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D::P::Database: Changing Databases dynamically between routes
by Gurunandan Bhat 27 Jan '12

27 Jan '12

Hi, I am trying to use Dance::Plugin::Database with SQLite in a situation where different databases must be connected to in different routes. For example: get route_1 => sub { my $dbfile_1 = "..."; my $dbh = database({ driver: 'SQLite', database => $dbfile_1, .... Other Options }); ... Work with $dbh } get route_2 => sub { my $dbfile_2 = "..."; my $dbh = database({ driver: 'SQLite', database => $dbfile_2, .... Other Options }); ... Work with $dbh } My Config file contains: plugins: Database: driver: 'SQLite' Since I dont know what the database is going to be I dont have the database setting here (probably incorrect, but I dont know any better) After a few routes I begin to get this error: Can't connect to data source 'dbi:SQLite' because I can't work out what driver to use (it doesn't seem to contain a 'dbi:driver:' prefix and the DBI_DRIVER env var is not set) at /home/nandan/perl5/perlbrew/perls/perl-5.14.2/lib/site_perl/5.14.2/Dancer/Plugin/Database.pm line 163 Could you suggest the correct way to set the database dynamically in each route? Thank you

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Dancer and EV/thread-based servers
by Nick Knutov 26 Jan '12

26 Jan '12

Hello all, the question may be not about Dancer itself, but what should I know to write Dancer' plugins and applications compatible with EV- and threads-based servers? -- Best Regards, Nick Knutov http://knutov.com ICQ: 272873706 Voice: +7-904-84-23-130

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