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

My Dancer App
by Vincent Bachelier 09 Mar '11

09 Mar '11

Hi, as I have seen that people are existing by presenting they new Dancer app, there is mine :) I have made the http://sck.to A Shorten URL Service, that use : Dancer (awesome of course) Redis (awesome way to save data and have an ultra high speed) NGINX ( to serve static files) Plackup ( to server Dancer apps) The system could be plug in any Customer shorten services with Api. I have successfully plug it in Drupal, on my site http://qa.celogeek.comby just adding : http://sck.to?a=1&url= in Shorten URL. And it offer simple stats (clicks and uniq clicks). Well, THANKS A LOT DANCER ! I love Perl community :) Geistteufel

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My dancer app
by Alex Knowles 09 Mar '11

09 Mar '11

Hi all, Just to let you know after a fair bit of hard work here's our new dancer powered site: http://www.moonfruit.com/ The app itself is fairly lite, and basically does API calls to our main system backend via json-rpc. all very exciting. Cheers for some awesome software. Alex

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exception handling
by Taric Mirza 09 Mar '11

09 Mar '11

I want to add some custom exception handling code to a dancer (loving it so far!) app and am experimenting around. eg: use Dancer ':syntax'; use Try::Tiny; get '/' => sub { try { my $data = process_data(); # throws Exception::Class objects template 'index', { 'data' => $data, }; } catch { my $exception = $_; template 'error', { 'exception' => $exception, }; }; return 1; }; 1; This works, but I will have to duplicate the exception handling code for every route. If "get" and the other route handlers were normal methods, I would be able to subclass Dancer and add the exception handling code that way. But since it is some kind of syntactic sugar, not sure if that is easily doable. Any ideas? Thanks. -- Taric

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Dancer::Test and negative testing, error reporting
by Rudolf Muehlbauer 07 Mar '11

07 Mar '11

Dear List, I casually use `die` inside my handlers to report errors. This works ok when i use the application with the browser. The `die`s are translated to HTTP 500, the error is reported to the user. Now my problem: I want to test corner-cases in my Dancer::Test cases. But in the test-cases, my `die`s are not translated to HTTP 500, instead the test dies "Dubiously". Is there a way to get Dancer::Test to behave like Dancer w/o Test? I really don't want to `eval` all my tests - set aside that this would also not allow me to test for HTTP 500. Alternatively, how should error reporting happen without `die`? I miss my structured exception handling... Any help greatly appreciated, -- Rudolf Muehlbauer <rudolf.muehlbauer(a)gmail.com>

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Al Newkirk wants to stay in touch on LinkedIn
by Al Newkirk 06 Mar '11

06 Mar '11

LinkedIn ------------ I'd like to add you to my professional network on LinkedIn. - Al Newkirk Al Newkirk Managing Partner at Al Newkirk & Associates Greater Philadelphia Area Confirm that you know Al Newkirk https://www.linkedin.com/e/-dmhwk6-gky3oum2-2e/isd/2450770898/DUd3LYzo/ -- (c) 2011, LinkedIn Corporation

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web server configuration under built-in Dancer web server
by Mr. Puneet Kishor 05 Mar '11

05 Mar '11

I asked this a few days ago but didn't receive any reply. So, trying again -- Here is what I want to do -- set relative paths to directories (aliases, in the world of Apache) when using the built in Dancer server, version 1.3011. Here is why -- One, I am getting a bit sick of Apache. Methinks a lot of my performance problems are tied to Apache, perhaps because I don't know how to tune the heck out of it. Nevertheless, the major problem is, I get very, very poor error messaging with Dancer+Apache combination. An example -- I had a mistake in my script last night that I was accessing via Ajax. All I got was an error popup on the client telling me that "an internal error had occurred." Other than that, nothing in Apache error log, and, funnily I was/am also not getting any development.log output. In sheer frustration, I decided to run the built-in Dancer server, and boom! I got a nice message saying "var prcp not definted at line blah blah" and I also got messages in the development.log. The problem now? Well, none of my aliases, as declared in httpd.conf are available to the built-in server. Here is how I work -- I store all my common JavaScript libraries in ~/<http root>/lib, and all my applications in ~/<http root>/<app dir>. In my vhosts.conf file I define an alias for lib as `/lib ~/<http root>/lib` so I can access all my JS libraries via `<script type="text/javascript" src="/lib/funky/funky.min.js"></script>` and so on. How can I define these kind of aliases for the Dancer's built-in server? Additionally, what am I doing wrong that I always get such poor error reporting? -- Puneet Kishor

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setting environment in Apache config
by Mr. Puneet Kishor 05 Mar '11

05 Mar '11

I can't figure out how to tell Dancer that my app should use development.yml under Apache. I have the following in vhosts.conf SetEnv DANCER_ENVIRONMENT "development" When I put the following fragment in config.yml, everything works db_name: "mydb" db_user: "dev" db_pass: "dev" When I take the above out of config.yml, and put it in development.yml, all the config->{} values are empty. For example, I get the following error in my Apache log DBI connect('dbname=','',...) failed: FATAL: because, my code is my $dbh = DBI->connect( "dbi:Pg:dbname=" . config->{db_name}, config->{db_user}, config->{db_pass}, {AutoCommit => 0} ); If I put the above in development.yml, and put the following in production.yml, it fails because it can't find the prod databases db_name: "mydb" db_user: "prod" db_pass: "prod" It is almost as if development.yml is not being seen at all. It is being bypassed. Maybe that also explains why I am not getting any development.log. Any ideas? I am using Dancer 1.3011. Puneet,

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Dancer::Test question
by Rudolf Muehlbauer 05 Mar '11

05 Mar '11

Hello Dancer Users, I have a question about Dancer::Test. I use `response_status_is` to test routing and execution in my application. I can do that successfully 'plain' paths, e.g.: response_status_is ['GET', '/rest/resource'], 200; But this method fails if i want to use query parameters in the URL, e.g.: response_status_is ['GET', '/rest/resource?query=something'], 200; In the latter case, Dancer::Test fails (the whole testcase btw) t/003_some_tests.t .... 1/? Can't call method "status" on an undefined value at /usr/local/share/perl/5.10.1/Dancer/Test.pm line 111. # Tests were run but no plan was declared and done_testing() was not seen. t/003_acs_tests.t .... Dubious, test returned 255 (wstat 65280, 0xff00) Anything I could do about this? Any help appreciated! -- Rudolf Muehlbauer <rudolf.muehlbauer(a)gmail.com>

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Dance floor arrangment -- bad error reporting
by Puneet Kishor 02 Mar '11

02 Mar '11

The seating arrangement is not conducive to dancing on the dancer floor. Here is what I want to do -- set relative paths to directories (aliases, in the world of Apache) when using the built in Dancer server, version 1.3011. Here is why -- One, I am getting a bit sick of Apache. Methinks a lot of my performance problems are tied to Apache, perhaps because I don't know how to tune the heck out of it. Nevertheless, the major problem is, I get very, very poor error messaging with Dancer+Apache combination. An example -- I had a mistake in my script last night that I was accessing via Ajax. All I got was an error popup on the client telling me that "an internal error had occurred." Other than that, nothing in Apache error log, and, funnily I was/am also not getting any development.log output. In sheer frustration, I decided to run the built-in Dancer server, and boom! I got a nice message saying "var prcp not definted at line blah blah" and I also got messages in the development.log. The problem now? Well, none of my aliases, as declared in httpd.conf are available to the built-in server. Here is how I work -- I store all my common JavaScript libraries in ~/<http root>/lib, and all my applications in ~/<http root>/<app dir>. In my vhosts.conf file I define an alias for lib as `/lib ~/<http root>/lib` so I can access all my JS libraries via `<script type="text/javascript" src="/lib/funky/funky.min.js"></script>` and so on. How can I define these kind of aliases for the Dancer's built-in server? Additionally, what am I doing wrong that I always get such poor error reporting? -- Puneet Kishor

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Minimum code required to get Dancer up and running?
by Brian E. Lozier 02 Mar '11

02 Mar '11

I'm going to do a test implementation of a dancer web app into an existing project. I would like to know the minimum files I need to create in order to get it running. My intention is not to use the scaffolding script to create files as 1) it creates a bunch of files I don't need [but I don't know which ones are strictly required], 2) it creates a directory structure designed to house all my code, but I already have a directory structure [that might not match Dancer's exactly], and 3) I find scaffolding scripts hide a bunch of information that it's really better for me to understand instead of gloss over. I would essentially like to start from scratch. If there is not already documentation on this and I get some feedback here, I'll be happy to write a document and submit it back to the list. I have a couple other questions as well. 1. Is it possible for me to specify the "templates" directory as something other than "views" (we use "template" function in the code, it makes more sense to load it from a "templates" directory instead of a "views" directory)? 2. Is there an in-code restriction that requires me to have the directory name of my project (like "myproject") match the name of the dancer app module (myproject.pm)? I ask because it's not perlish to have a lower-cased module (like myproject.pm) but I don't want to name my directory MyProject because it's annoying to type. Generally lower case module names are reserved for pragmas (like warnings, strict, feature, etc.). Thanks in advance for any help, Brian

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