November 2013 - dancer-users - lists.preshweb.co.uk

LPW Dancer2 class - test run
by Andrew Solomon 23 Nov '13

23 Nov '13

I've just prepared an online Dancer2 course which I'll be delivering in person at the London Perl Workshop on Saturday 30th November. http://act.yapc.eu/lpw2013/talk/5030 http://geekuni.com/perl-web-d2 I'd be really pleased if there are one or two Dancer beginners who'd be willing to give it a test run online and let me know if anything's unclear. Please drop me an email if you're interested. Also, I'll be running a survey of the class to learn about the students and how they find the class. If there's anything you're desperate to know about people interested in Dancer, please send me an email with suggested questions. Many Thanks Andrew

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Dancer listen on ip setup
by Attila Bárdi 17 Nov '13

17 Nov '13

Dear Dancers, I want to setup my perl dancer applicaion to listen only on localhost. By default it listen all the ip addresses. So far I have not found anything how to configure it. I use starman and apache reverse proxy (for terminating the SSL). Where can I find howto for that? Best regards, Attila

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Dancer advent calendar 2013
by David Precious 13 Nov '13

13 Nov '13

Hi all, Well, Christmas is fast approaching - another happy year of dancing has flown past. I'd like to see us do another advent calendar as we have in past years (see http://advent.perldancer.org/ for previous years) - and I'm conscious it would make sense to start soon, rather than a last-minute rush; I'm certainly going to be more pressed for time this time round (my nearly 7 weeks old son makes sure of that :) ) so I'd appreciate any offers of help - anyone who would like to contribute an article for the calendar would be greatly appreciated. See previous years for examples of what we've used in the past. I think we definitely need some good Dancer2-focussed articles, as well as Dancer1. Last year I did a couple of mini interviews with people using Dancer in a corporate environment: http://advent.perldancer.org/2012/18 http://advent.perldancer.org/2012/19 I'd like to do more of those - so if anyone would be willing to take part and answer a few questions on their use of Dancer, please raise your hands! 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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HTTP 504 Gateway Time-out when running Dancer2 app as cgi-script
by Maxwell Carey 12 Nov '13

12 Nov '13

I followed the instructions in the Dancer2 deployment guide for running as a cgi-script <http://search.cpan.org/%7Esukria/Dancer2-0.01/lib/Dancer2/Deployment.pod#Ru…> but I am getting HTTP 504 Gateway Time-out when I try to access my application in a browser. I am brand new to the world of PSGI/Plack so I could be way off in my diagnosis, but it looks like when I request http://<hostname>/ from a remote host, dispatch.cgi starts up a server listening on port 3000 and then just sits there waiting for input until the request times out. Here's what I see in my Apache error log: [Mon Nov 04 09:44:32 2013] [error] [client 128.117.20.57] [ip2map:30142] core @2013-11-04 09:44:32> Registered Dancer2::Core::DSL__WITH__Dancer2::Plugin::Ajax=HASH(0x3414560) in /var/www/ip2map/public/../lib/ip2map.pm l. 3 [Mon Nov 04 09:44:32 2013] [error] [client 128.117.20.57] [ip2map:30142] core @2013-11-04 09:44:32> Registered Dancer2::Core::DSL__WITH__Dancer2::Plugin::Ajax__WITH__Dancer2::Plugin::Database=HASH(0x3414560) in /var/www/ip2map/public/../lib/ip2map.pm l. 4 [Mon Nov 04 09:44:32 2013] [error] [client 128.117.20.57] >> Dancer2 v0.10 server 30142 listening on http://0.0.0.0:3000 [Mon Nov 04 09:44:32 2013] [error] [client 128.117.20.57] >> Dancer2::Plugin::Ajax (0.10) [Mon Nov 04 09:44:32 2013] [error] [client 128.117.20.57] >> Dancer2::Plugin::Database (2.10) [Mon Nov 04 09:45:32 2013] [warn] [client 128.117.20.57] Timeout waiting for output from CGI script /var/www/ip2map/public/dispatch.cgi [Mon Nov 04 09:45:32 2013] [error] [client 128.117.20.57] Script timed out before returning headers: dispatch.cgi Here is my Apache configuration (Apache v2.2.15): NameVirtualHost *:80 <VirtualHost *:80> ServerName mcmes21.cgd.ucar.edu ServerAlias mcmes21 DocumentRoot /var/www/ip2map/public ServerAdmin mcarey(a)ucar.edu <Directory "/var/www/ip2map/public"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all AddHandler cgi-script .cgi </Directory> RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^(.*)$ /dispatch.cgi$1 [QSA,L] ErrorLog /var/log/httpd/ip2map-error_log CustomLog /var/log/httpd/ip2map-access_log common </VirtualHost> Note that my application works fine when served with Starman via mod_proxy with the following Apache configuration: NameVirtualHost *:80 <VirtualHost *:80> ServerName mcmes21.cgd.ucar.edu ServerAlias mcmes21 DocumentRoot /var/www/ip2map <Proxy *> Order deny,allow Allow from all </Proxy> ProxyPass / http://localhost:5000/ ProxyPassReverse / http://localhost:5000/ </VirtualHost> Does anyone know how I can get this working as CGI? --Max

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Dancer-Plugin-Auth-Extensible in FreeBSD ports
by Henk van Oers 12 Nov '13

12 Nov '13

@bigpresh congrats with smallpresh. DPAE is in the FreeBSD collection now. Expect more users, aka more PRs. If ENOTIME just forward the PRs to me. -- Henk

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DBD::Proxy with Dancer
by Hugues 11 Nov '13

11 Nov '13

Hello I use my DBD::Proxy to connect my program to ODBC Access Database. with: my $dsn = "DBI:Proxy:hostname=$IP;port=$PORT;dsn=DBI:ODBC:$ODBC"; my $dbh = DBI->connect($dsn, "", "") || die "Erreur de connexion à la base"; $dbh->{AutoCommit} = 1; $dbh->{RaiseError} = 1; I would like to transpose this same connection using Dancer, in config.yml, but I do not arrive to pass good settings. login and password are empty plugins: Database: connections: accesssav: driver: "Proxy:hostname=192.168.0.19;port=2000;dsn=DBI:ODBC:accesssav" database: 'accesssav' username: '' password: '' port: 2000 connection_check_threshold: 3 #dbi_params: # RaiseError: 1 # AutoCommit: 1 #on_connect_do: ["SET NAMES 'utf8'", "SET CHARACTER SET 'utf8'" ] log_queries: 0 [5268] error @0.140813> [hit #1]Database connection failed - Cannot log in to DBI::ProxyServer: Refused by server: User is not permitted to connect. at /usr/local/share/perl5/RPC/PlClient.pm line 82. in /usr/local/share/perl5/Dancer/Plugin/Database.pm l. 16 I try lot of settings as driver: "Proxy:hostname=192.168.0.19;port=2000;dsn=DBI:ODBC:accesssav" driver: "Proxy:hostname=192.168.0.19;port=2000;dsn=DBI:ODBC:accesssav, '', '' " nothing works , someone has already test Dancer with DBD::Proxy ?

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Recommendations for NGINX + Dancer deployment, no Starman
by Assaf Gordon 04 Nov '13

04 Nov '13

Hello, I'm looking to deploy a small (or multiple small) Dancer application on a small server (512MB). Memory efficiency and stability are more important than high-performance in this instance. I've switched from Apache to NGINX, which saved a lot of memory. I'm now looking to use either FastCGI or CGI with NGINX + Dancer - are there any examples for this kind of deployment? other recommendations? I want to avoid running an external process (e.g. plackup/starman/twiggy/etc.). Thanks! -gordon

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Changing configuration for testing
by Gabor Szabo 01 Nov '13

01 Nov '13

In development.yml I have the default: log: "core" which is good for development, but when I run a test script it fills the screen unnecessarily. How can I set the log level to "warning" in the test script? Gabor

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Template Toolkit Engine (Recursion flag)
by Tiago Quintela 01 Nov '13

01 Nov '13

Hi, On the project I'm working on I've been using a recursive template call, so after some digging, on Dancer1 i was able to set this up on config.yml with something like: engines: template_toolkit: ... WRAPPER: 'wrapper.tt' RECURSION: '1' ... Which passed the recursion flag to Template object and allowed recursion (set to zero by default). I'm now trying to move the project to Dancer2 but i end up with the following error: error @2013-11-01 18:43:58> Route exception: file error - recursion into 'UNWRAP.tt' It seems that Dancer is not telling Template::Toolkit that it should allow recursion on templates. From what I remember when I was setting up Template Toolkit recursion flag in previous version of Dancer, anything under "template_toolkit" would be sent as a parameter to Template->new(), has this changed? thanks, -- Tiago Quintela

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