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Dancer::Session::SQLite
by P Kishor 24 Aug '10

24 Aug '10

Using Dancer::Session::YAML and Dancer::Session::Storable as templates, I created a Dancer::Session::SQLite module. I put it in /usr/local/lib/perl5/site_perl/5.12.1/Dancer/Session/SQLite.pm and set session => 'SQLite'. Yet, I get an error saying 'Error while loading /Users/punkish/Sites/lca/app.psgi: unknown session engine 'SQLite', perhaps you need to install Dancer::Session::SQLite? at /usr/local/lib/perl5/site_perl/5.12.1/Dancer/Engine.pm' What am I doing wrong? -- Puneet Kishor

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timeout
by Maurice Mengel 24 Aug '10

24 Aug '10

Hi, I am processing an xml document which is too big, respectively, I am processing it too slow. Anyways, at some point I get a timeout. Now I am trying to understand 'who' causes the timeout. Does Dancer do something in this respect? Is there something like php's max_execution_time? Or maybe there is none of it on the server side and the timeout comes from the client? Thanks for enlightenment in advance. Maurice

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Debugging with Dancer
by Peter Gordon 24 Aug '10

24 Aug '10

When debugging a web app, I find it much easier if I can run the app like this: perl -d myApp.pl color=red name=apple where the parameters are given on the command line, or within a file. Can someone suggest the best/easiest way to do this with Dancer. Thanks, Peter

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complex data structures in config.yml
by P Kishor 24 Aug '10

24 Aug '10

I am trying to unsuccessfully move a couple of complex data structures to config.yml For example, I have the following in my Perl script @models = ( {id => 1, name => "Low carbon", palette => "black_blue", year => 1900}, {id => 2, name => "Low nitrogen", palette => "red_green", year => 1900}, {id => 3, name => "High water", palette => "yellow_red", year => 1900} ); As far as I can tell, I can convert it to YAML like so models: - model_id: 1 name: "Low carbon" palette: "black_blue" start_year: 1900 - model_id: 2 name: "Low nitrogen" palette: "red_green" start_year: 1900 - model_id: 3 name: "High water" palette: "yellow_red" start_year: 1900 and then, in my Dancer code, I should be able to do my @models = config->{models}; or at least my $models = config->{models}; (I am not sure if I should get an array or an arrayref). In any case, I get the following error Error while loading /Users/punkish/Sites/app/app.psgi: YAML Error: Stream does not end with newline character\n Code: YAML_PARSE_ERR_NO_FINAL_NEWLINE\n Needless to say, I do have a final newline, so the error is misleading. What am I doing wrong? What can I do right? -- Puneet Kishor http://www.punkish.org Carbon Model http://carbonmodel.org Charter Member, Open Source Geospatial Foundation http://www.osgeo.org Science Commons Fellow, http://sciencecommons.org/about/whoweare/kishor Nelson Institute, UW-Madison http://www.nelson.wisc.edu ----------------------------------------------------------------------- Assertions are politics; backing up assertions with evidence is science =======================================================================

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Danceer 1.1807 uploaded to CPAN
by Alexis Sukrieh 23 Aug '10

23 Aug '10

Hey perl dancers! I'm very glad to announce that a new stable release has just been uploaded to CPAN. The tarball should be available from your CPAN client in a couple of hours. In the meanwhile you can grab a snapshot here: http://github.com/sukria/Dancer/tarball/v1.1807 This is a huge step that has been done since 1.1805 and I'm sure you'll enjoy a lot all the new stuff: http://github.com/sukria/Dancer/blob/v1.1807/CHANGES Although bugs can still happen, this release has been heavily tested, with two development releases preceeding it (1.1806_01 and 1.1806_02). I really want to thank all the people involved with this release (as time goes more and more people contribute to the project, and nothing could make me happier). A special thank and lots of beers go to Franck Cuny who did a huge amount of work for this release, in many fields (PSGI compliance, bug fixing, test enhancements, documentation reviews and many more). My informant also told me he's been working on Websocket suppport but hush! this is another (upcoming) story ;) Enjoy your dances. -- Alexis

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websockets
by Naveed Massjouni 22 Aug '10

22 Aug '10

I think it would be awesome if Dancer supported websockets http://en.wikipedia.org/wiki/WebSockets. Has anyone started working on this? Lets do it. Who's with me? :) -Naveed

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Re: [Dancer-users] documentation github wiki
by Maurice Mengel 21 Aug '10

21 Aug '10

Hi all, I am new to dancer, don't know too much about webapps, but like his/her or simply its (?) elegance and simplicity (from the user perspective). There were recently some complaints referring to quality of documentation recently on this list. A bit exaggerated, but not completely without reason, in my opinion. I noticed that there are different bits and pieces of documentation on a number of different places: mainly cpan, github, perldancer.org. I tried to change documentation page on github wiki to point to the various resources instead of repeating old hats once again yesterday. Now another suggestion for the github wiki: I suggest to use the github wiki to collaboratively improve the docs. It's not really anything new. Anybody can write to this list with suggestions or file issues on github with suggestions to improve documentation, but maybe a wiki is a little friendlier for people like me who are no full-time developers. I imagine that good passages could be taken over in the pod section if developers like it. In the worst case this effort will end before much has happened, but no harm done. If there is positive feedback I would start a wiki version of the cookbook on github wiki and try to improve that as I learn. What's your opinion? best Maurice

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how to set different running environment with Plack::Handler?
by P Kishor 21 Aug '10

21 Aug '10

The docs say that I can have different config settings for development and production, and one or the other will be automatically used depending on my running environment, which I can specify with --environment command line switch. But, how do I specify this command line switch when I am running the application via Plack::Handler? Right now I run the application with the help of the following lines in my httpd.conf <Location /> SetHandler perl-script PerlHandler Plack::Handler::Apache2 PerlSetVar psgi_app /Users/punkish/Sites/lca/app.psgi </Location> -- Puneet Kishor http://www.punkish.org Carbon Model http://carbonmodel.org Charter Member, Open Source Geospatial Foundation http://www.osgeo.org Science Commons Fellow, http://sciencecommons.org/about/whoweare/kishor Nelson Institute, UW-Madison http://www.nelson.wisc.edu ----------------------------------------------------------------------- Assertions are politics; backing up assertions with evidence is science =======================================================================

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multi-folder Dancer app
by P Kishor 21 Aug '10

21 Aug '10

This could be something very simple, or it could be impossible, but I surely can't figure out. How do I create a multi-folder Dancer app? As is, I get the following when I boostrap a new app with `dancer` -- app/ environments/ view/ lib/ public/ t/ The above works well for a relatively simple application, but if I have several groups of relatively complicated functions, I would like to group them by, well, by functions. Here is what I would like -- app/ function1/ function2/ function1 and function2 would be like mini dancer apps in their own right, but would share common resources such as top menu, login capabilities, logos, images (common to the both of them), master style sheet, etc. They would likely also share a fair bit of common Perl code, and also some data tables from a db. What is a suggested pattern for that? -- Puneet Kishor http://www.punkish.org Carbon Model http://carbonmodel.org Charter Member, Open Source Geospatial Foundation http://www.osgeo.org Science Commons Fellow, http://sciencecommons.org/about/whoweare/kishor Nelson Institute, UW-Madison http://www.nelson.wisc.edu ----------------------------------------------------------------------- Assertions are politics; backing up assertions with evidence is science =======================================================================

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working with HTTP env vars
by P Kishor 20 Aug '10

20 Aug '10

Hi, Per the docs for 1.1805, I can work with the env vars as follows -- in my App.pm ------------ my $env = request->env(); template <tmpl>, { var1 => $env->{var1}, var2 => $env->{var2} .. and so on .. } in my template -------------- var1: [% var1 %]<br /> var2: [% var2 %]<br /> .. and so on .. The above is not working for me as I am trying to use basic Apache env vars such as REQUEST_URI, SCRIPT_FILENAME, etc. A little background, since someone might be able to suggest a different way of accomplishing what I am trying to do -- My web site is at http://mywebsite.org/. In the VirtualHost definition of mywebsite.org, I have the following ProxyPass /app/one http://one.org/ ProxyPassReverse /app/one http://one.org/ Of course, http://one.org/ is a Dancer application. So, when the users go to http://mywebsite.org/ they see the regular, static web site. However, when they go to http://mywebsite.org/app/one/ they see my Dancer web site. In order to get the correct paths to the CSS and images and other assets for one.org, I need that '/app/one' bit from the request uri. That way I can do the following in my template <link rel="stylesheet" href="[% uri %]/css/grid.css" /> The reason I can't hard code the above is because there are more than one applications, and, of course, I want to be able to access the application directly from http://one.org/ as well. Suggestions on how I can grab the requested uri? -- Puneet Kishor http://www.punkish.org Carbon Model http://carbonmodel.org Charter Member, Open Source Geospatial Foundation http://www.osgeo.org Science Commons Fellow, http://sciencecommons.org/about/whoweare/kishor Nelson Institute, UW-Madison http://www.nelson.wisc.edu ----------------------------------------------------------------------- Assertions are politics; backing up assertions with evidence is science =======================================================================

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