December 2010 - dancer-users - lists.preshweb.co.uk

Reverse-proxy deployments
by Flavio Poletti 17 Dec '10

17 Dec '10

Hi All, just a thought about the reverse-proxy deployment strategy and how you handle it. First of all, it seems that this approach "burns away" the uri_for function, because it insists on working upon the "internal" URI and not the one seen on the external side. I worked this around by re-defining uri_for and forcing the usage of a configurable base URI, but I'd like to hear whether there is a better/standard/builtin alternative to this. Looking at the code it does not seem that the current implementation of uri_for is ready for a reverse-proxy envinroment, maybe this could be provided as a generalisation of the current uri_for? Maybe with some Dancer::Plugin::ReverseProxy plugin? Another thing has to do with the static contents. By default this lives in the same "space" as all the routes, although in separate subdirectories. To serve this content statically, it means that each item in the "public" directory within my app tree must be explicitly dealt with by the reverse-proxy server with an ad-hoc configuration, e.g. in Apache I would put: ProxyPass /path/to/app/css/ ! ProxyPass /path/to/app/javascripts/ ! ProxyPass /path/to/app/images/ ! ProxyPass /path/to/app/favicon.ico ! ProxyPass /path/to/app/ http://www.example.com/killer-app/ ProxyPassReverse /path/to/app/ http://www.example.com/killer-app/ This might be annoying and error-prone: what if I add another directory/item and I forget to change the configuration of the proxy? In this case, the safer approach seems to be the configuration of a "static" directory inside the reverse proxy, which is accessed through http://www.example.com/path/to/app/static/, but this in turn means that the templates have to be modified to include this new "static" subdirectory. This approach is not the default one while creating a new Dancer app, so I'd like if someone can share some thoughts about possible alternatives to this kind of modifications. Thank you, Flavio.

3 4

Keeping values on a form
by ambs 17 Dec '10

17 Dec '10

Hi This is not really a Dancer problem, but something that I am missing when changing from CGI to Dancer + TemplateToolkit. Basically: - I have a form with an array of checkboxes - that form gets submitted - some results are shown, together with the form for resubmission The question is, how do I keep the checkboxes checked (or not) accordingly with what the user picked before submitting it? For reference, CGI called this behavior as stiky: By default the CGI module implements a state-preserving behavior called "sticky" fields. The way this works is that if you are regenerating a form, the methods that generate the form field values will interrogate param() to see if similarly-named parameters are present in the query string. If they find a like-named parameter, they will use it to set their default values. Thank you ambs

4 7

JSONRPC
by Robert Olson 16 Dec '10

16 Dec '10

Anyone working on a JSONRPC server plugin for dancer? I've been poking at using JSONRPC for a new project and don't really like the server modules available. Seems it should be straightforward to build one using JSON::RPC::Common. I'll probably start on that next time I get some free time to hack. --bob

2 1

How to set the environment?
by Gabor Szabo 16 Dec '10

16 Dec '10

in the $appdir/environments subdir there are two yml files for configuration in development and production environment. How do I configure which environment is the application running in? I tried to find it in http://search.cpan.org/dist/Dancer/lib/Dancer/Config.pm but could not find it. Gabor http://szabgab.com/

5 5

Handling errors: Best Practices for Module extensions and Plugins
by Gurunandan Bhat 15 Dec '10

15 Dec '10

I have seen plugins and modules that extend the core (Dancer::Session::X for instance) handle fatal errors in diverse ways: die and croak for one. Are there best practices for die'ing from a use'd module or plugin? Thank you

3 5

When should I use load_plugin and not 'use'
by Gurunandan Bhat 15 Dec '10

15 Dec '10

When should I use load_plugin in my application as opposed to a plain use? Thank you

2 1

Dancer Noob => interpolating variables
by ambs 15 Dec '10

15 Dec '10

Hello. I am starting with dancer. Installed, run dancer -a, and changed a template to include some variables: .. <div><% sidebar %></div> .. And in the rule, I have get '/' => sub { template 'index' => { 'sidebar' => 'bar', }; }; But the template is, still, empty. I am not sure where to debug this.. any hint will be welcome :) Alberto

4 5

Re: [Dancer-users] Dancer-users Digest, Vol 10, Issue 18
by Al Newkirk & Associates 14 Dec '10

14 Dec '10

Okay now that im on an actual computer we can chat ... RBAC is kinda-complex idea I suppose. Once grasp it you'll understand that what you're trying to do already exists. If you want to package your custom auth module with your app, simply add lib/Dancer/Plugin/Auth/RBAC/Credentials/MyAuth.pm to your app, now it can be shipped as you like. Someone gave you a bit of misinformation regarding the config file ... this is what it should look like: plugins: Auth::RBAC: credentials: class: MyAuth options: (everything under this gets passed-in) Also, this variable $Dancer::Plugin::Auth::RBAC::settings holds all plugin variables (hashref) On Tue, Dec 14, 2010 at 10:03 AM, <dancer-users-request(a)perldancer.org>wrote: > Send Dancer-users mailing list submissions to > dancer-users(a)perldancer.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://www.backup-manager.org/cgi-bin/listinfo/dancer-users > or, via email, send a message with subject or body 'help' to > dancer-users-request(a)perldancer.org > > You can reach the person managing the list at > dancer-users-owner(a)perldancer.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Dancer-users digest..." > > > Today's Topics: > > 1. Re: Dancer-users Digest, Vol 10, Issue 14 (Gurunandan Bhat) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 14 Dec 2010 20:33:22 +0530 > From: Gurunandan Bhat <gbhat(a)pobox.com> > Subject: Re: [Dancer-users] Dancer-users Digest, Vol 10, Issue 14 > To: awnstudio(a)gmail.com > Cc: dancer-users(a)perldancer.org > Message-ID: > <AANLkTimPNrhqpNZS9RW20NxX8YDuwAFKW3=_y4WLfe2N(a)mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > On Tue, Dec 14, 2010 at 1:20 PM, <awnstudio(a)gmail.com> wrote: > > > Just my 2 cents, ... From my blackberry. RBAC::Credentials::MyAuth is > where > > you should create you custom auth class. > > > I would normally have preferred to use the App Namespace rather than the > RBACC namespace. One advantage that I see in doing this is that it allows > me > to distribute and control my application from a single point rather than > have the deployer install modules in different folders. > > What I loose is that plugin_setting() will no longer return config under > > plugins: > Auth::RBAC: > credentials: > class: MyAuth > mykey: myvalue > > and that I will have to create a custom entry outside the plugins: yaml > tree. I can live with that. In fact I just got introduced to Dancer 4 > waking > hours ago and I have already ported 2 apps. With that kind of power, I > guess > I can live with anything :) > > > > Yes you can subclass it but the boilerplate is very minimal so just copy > > and paste and alter. > > > > > True. > > > > Also in the config.yml, everything under the plugin name is passed as the > > options hashref, .e.g. Config, MySQL, MyApp, etc > > > > ...but only if you are under the Dancer::Plugin namespace - subclassing > Dance::Plugin is, I understand not enough. > > Thanks for your comments - it did help me understand this a little better. > > > > > Sent from my Verizon Wireless BlackBerry > > > > -----Original Message----- > > From: dancer-users-request(a)perldancer.org > > Sender: dancer-users-bounces(a)perldancer.org > > Date: Tue, 14 Dec 2010 09:56:42 > > To: <dancer-users(a)perldancer.org> > > Reply-To: dancer-users(a)perldancer.org > > Subject: Dancer-users Digest, Vol 10, Issue 14 > > > > Send Dancer-users mailing list submissions to > > dancer-users(a)perldancer.org > > > > To subscribe or unsubscribe via the World Wide Web, visit > > http://www.backup-manager.org/cgi-bin/listinfo/dancer-users > > or, via email, send a message with subject or body 'help' to > > dancer-users-request(a)perldancer.org > > > > You can reach the person managing the list at > > dancer-users-owner(a)perldancer.org > > > > When replying, please edit your Subject line so it is more specific > > than "Re: Contents of Dancer-users digest..." > > > > > > Today's Topics: > > > > 1. Can I subclass DP::Authorize::Credentials from a different > > namespace (Gurunandan Bhat) > > 2. Use of uninitialized value $values[0] in... Route.pm line 80 > > (Puneet Kishor) > > 3. Secure http (https) with Dancer (Gurunandan Bhat) > > 4. Re: Secure http (https) with Dancer (Roman Galeev) > > 5. Re: Secure http (https) with Dancer (Gurunandan Bhat) > > 6. Re: Can I subclass DP::Authorize::Credentials from a > > different namespace (sawyer x) > > 7. Re: Use of uninitialized value $values[0] in... Route.pm line > > 80 (sawyer x) > > > > > > ---------------------------------------------------------------------- > > > > Message: 1 > > Date: Tue, 14 Dec 2010 00:40:46 +0530 > > From: Gurunandan Bhat <gbhat(a)pobox.com> > > Subject: [Dancer-users] Can I subclass DP::Authorize::Credentials from > > a different namespace > > To: Dancers <dancer-users(a)perldancer.org> > > Message-ID: > > <AANLkTi=UP2aDRsH2tiWWWHMnoEK4pJsJtyJumPW=-Fiv(a)mail.gmail.com> > > Content-Type: text/plain; charset=ISO-8859-1 > > > > Hi, > > > > I want to subclass Dancer::Plugin::Authorize::Credentials but not in the > > DPAC namespace, but in my App namespace, essentially something that > > would go like this: > > > > package App:Authenticate; > > use base qw/Dancer::Plugin::Authorize::Credentials/; > > > > sub authorize { > > my ($app, $opts, $username, $passwd) = @_; > > ..... > > } > > > > 1; > > > > I have two questions: > > > > 1. Can I do this? > > 2. If yes, how do I set option parameters in config.yml so that they are > > passed as a hashref in $opts. > > > > Thank you. > > > > > > ----------------------------------------------------------------- > > dancer does for web frameworks what sqlite did to databases > > > > > > ------------------------------ > > > > Message: 2 > > Date: Mon, 13 Dec 2010 16:30:05 -0600 > > From: Puneet Kishor <punk.kish(a)gmail.com> > > Subject: [Dancer-users] Use of uninitialized value $values[0] in... > > Route.pm line 80 > > To: dancer-users <dancer-users(a)perldancer.org> > > Message-ID: <4D069E6D.3000307(a)gmail.com> > > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > > > How do I debug something like this? > > > > [Mon Dec 13 16:26:07 2010] [error] [client 127.0.0.1] Use of > > uninitialized value $values[0] in join or string at > > /usr/local/lib/perl5/site_perl/5.12.1/Dancer/Route.pm line 80. > > > > Seems to happen when I visit the root of my web site, for example, > > http://server.com/ without anything after .com/.... > > > > -- > > Puneet Kishor > > > > > > > > > > ------------------------------ > > > > Message: 3 > > Date: Tue, 14 Dec 2010 09:11:38 +0530 > > From: Gurunandan Bhat <gbhat(a)pobox.com> > > Subject: [Dancer-users] Secure http (https) with Dancer > > To: Dancers <dancer-users(a)perldancer.org> > > Message-ID: > > <AANLkTi=UPa4=FDPGTwaDKaRgiat=6jUETVTD-8KaUKFs(a)mail.gmail.com> > > Content-Type: text/plain; charset=ISO-8859-1 > > > > Hi, > > > > How can I write a secure http web application with Dancer. > > I would like my application to be available on https://myapp > > > > > > Thank you > > > > > > ------------------------------ > > > > Message: 4 > > Date: Tue, 14 Dec 2010 10:07:42 +0500 > > From: Roman Galeev <noc(a)nelcom-voip.com> > > Subject: Re: [Dancer-users] Secure http (https) with Dancer > > Cc: Dancers <dancer-users(a)perldancer.org> > > Message-ID: <20101214100742.49036a1e(a)lenobook.jh> > > Content-Type: text/plain; charset=UTF-8 > > > > ?? Tue, 14 Dec 2010 09:11:38 +0530 > > Gurunandan Bhat <gbhat(a)pobox.com> ????????: > > > > > Hi, > > > > > > How can I write a secure http web application with Dancer. > > > I would like my application to be available on https://myapp > > > > Just put nginx in front of dancer. > > > > > > ------------------------------ > > > > Message: 5 > > Date: Tue, 14 Dec 2010 11:27:59 +0530 > > From: Gurunandan Bhat <gbhat(a)pobox.com> > > Subject: Re: [Dancer-users] Secure http (https) with Dancer > > To: Roman Galeev <noc(a)nelcom-voip.com> > > Cc: Dancers <dancer-users(a)perldancer.org> > > Message-ID: > > <AANLkTimyvru92aj=xwUm1F6cEShOHhiGu-6WbKYavTQ2(a)mail.gmail.com> > > Content-Type: text/plain; charset=UTF-8 > > > > Thank you. > > I have set up a reverse apache proxy and I was wondering if there was > > a better way > > > > Thanks once again > > > > On Tue, Dec 14, 2010 at 10:37 AM, Roman Galeev <noc(a)nelcom-voip.com> > > wrote: > > > ?? Tue, 14 Dec 2010 09:11:38 +0530 > > > Gurunandan Bhat <gbhat(a)pobox.com> ????????: > > > > > >> Hi, > > >> > > >> How can I write a secure http web application with Dancer. > > >> I would like my application to be available on https://myapp > > > > > > Just put nginx in front of dancer. > > > _______________________________________________ > > > Dancer-users mailing list > > > Dancer-users(a)perldancer.org > > > http://www.backup-manager.org/cgi-bin/listinfo/dancer-users > > > > > > > > > ------------------------------ > > > > Message: 6 > > Date: Tue, 14 Dec 2010 10:51:10 +0200 > > From: sawyer x <xsawyerx(a)gmail.com> > > Subject: Re: [Dancer-users] Can I subclass DP::Authorize::Credentials > > from a different namespace > > To: Gurunandan Bhat <gbhat(a)pobox.com> > > Cc: Dancers <dancer-users(a)perldancer.org> > > Message-ID: > > <AANLkTimGAbcA_7HCDPMvOMhO5BL7YU9GtoEfXbomF16r(a)mail.gmail.com> > > Content-Type: text/plain; charset="iso-8859-1" > > > > Hi! > > > > First of all, Dance::Plugin::Authorize has been renamed as > > Dancer::Plugin::Auth::RBAC< > > http://search.cpan.org/perldoc?Dancer::Plugin::Auth::RBAC> > > . > > > > This was a crucial change in order to allow a more organic expansion of > the > > Plugin namespace. > > > > On Mon, Dec 13, 2010 at 9:10 PM, Gurunandan Bhat <gbhat(a)pobox.com> > wrote: > > > > > > > > 1. Can I do this? > > > > > > > Of course. > > > > > > > 2. If yes, how do I set option parameters in config.yml so that they > are > > > passed as a hashref in $opts. > > > > > > > In order to get Dancer to send your subclass the configuration for the > > plugin, it has to sit on the Plugin namespace. That is, it should be > called > > Dancer::Plugin::My::App::Authorize or something like that. Then just set > > the > > correct plugin name in the config.yml file. > > > > For example: > > > > plugins: > > My::App::Authorize: > > credentials: > > class: Config > > options: > > accounts: > > user01: > > password: foobar > > > > roles: > > - guest > > - user > > user02: > > password: barbaz > > roles: > > - admin > > > > > > If you still wish to separate the namespace, you have two options: > > 1. Simply read the settings yourself from the config file > > (setting('MyApp')->{'authorize') or something like that). > > 2. You can re-register your subclass with Dancer, making sure Dancer > sends > > it its settings automatically. Check the RBAC.pm source for this. > > > > When subclassing RBAC, notice it has lexical file-scoped variables > > (specifically $settings). These variables won't be overridden by simply > > subclassing or fiddling with the symbol table, since they're sitting in > the > > lexical pad of the file. If you find need for RBAC to refactor and > abstract > > away that part, feel free to make any suggestions or (better yet) patches > > to > > do that. > > > > Franck is working on refactoring RBAC and he could take that into > account, > > if you approach him with it. > > > > Good luck, happy hacking! :) > > > > Sawyer. > >

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Re: [Dancer-users] Dancer-users Digest, Vol 10, Issue 14
by awnstudio＠gmail.com 14 Dec '10

14 Dec '10

Just my 2 cents, ... From my blackberry. RBAC::Credentials::MyAuth is where you should create you custom auth class. Yes you can subclass it but the boilerplate is very minimal so just copy and paste and alter. Also in the config.yml, everything under the plugin name is passed as the options hashref, .e.g. Config, MySQL, MyApp, etc Sent from my Verizon Wireless BlackBerry -----Original Message----- From: dancer-users-request(a)perldancer.org Sender: dancer-users-bounces(a)perldancer.org Date: Tue, 14 Dec 2010 09:56:42 To: <dancer-users(a)perldancer.org> Reply-To: dancer-users(a)perldancer.org Subject: Dancer-users Digest, Vol 10, Issue 14 Send Dancer-users mailing list submissions to dancer-users(a)perldancer.org To subscribe or unsubscribe via the World Wide Web, visit http://www.backup-manager.org/cgi-bin/listinfo/dancer-users or, via email, send a message with subject or body 'help' to dancer-users-request(a)perldancer.org You can reach the person managing the list at dancer-users-owner(a)perldancer.org When replying, please edit your Subject line so it is more specific than "Re: Contents of Dancer-users digest..." Today's Topics: 1. Can I subclass DP::Authorize::Credentials from a different namespace (Gurunandan Bhat) 2. Use of uninitialized value $values[0] in... Route.pm line 80 (Puneet Kishor) 3. Secure http (https) with Dancer (Gurunandan Bhat) 4. Re: Secure http (https) with Dancer (Roman Galeev) 5. Re: Secure http (https) with Dancer (Gurunandan Bhat) 6. Re: Can I subclass DP::Authorize::Credentials from a different namespace (sawyer x) 7. Re: Use of uninitialized value $values[0] in... Route.pm line 80 (sawyer x) ---------------------------------------------------------------------- Message: 1 Date: Tue, 14 Dec 2010 00:40:46 +0530 From: Gurunandan Bhat <gbhat(a)pobox.com> Subject: [Dancer-users] Can I subclass DP::Authorize::Credentials from a different namespace To: Dancers <dancer-users(a)perldancer.org> Message-ID: <AANLkTi=UP2aDRsH2tiWWWHMnoEK4pJsJtyJumPW=-Fiv(a)mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Hi, I want to subclass Dancer::Plugin::Authorize::Credentials but not in the DPAC namespace, but in my App namespace, essentially something that would go like this: package App:Authenticate; use base qw/Dancer::Plugin::Authorize::Credentials/; sub authorize { my ($app, $opts, $username, $passwd) = @_; ..... } 1; I have two questions: 1. Can I do this? 2. If yes, how do I set option parameters in config.yml so that they are passed as a hashref in $opts. Thank you. ----------------------------------------------------------------- dancer does for web frameworks what sqlite did to databases ------------------------------ Message: 2 Date: Mon, 13 Dec 2010 16:30:05 -0600 From: Puneet Kishor <punk.kish(a)gmail.com> Subject: [Dancer-users] Use of uninitialized value $values[0] in... Route.pm line 80 To: dancer-users <dancer-users(a)perldancer.org> Message-ID: <4D069E6D.3000307(a)gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed How do I debug something like this? [Mon Dec 13 16:26:07 2010] [error] [client 127.0.0.1] Use of uninitialized value $values[0] in join or string at /usr/local/lib/perl5/site_perl/5.12.1/Dancer/Route.pm line 80. Seems to happen when I visit the root of my web site, for example, http://server.com/ without anything after .com/.... -- Puneet Kishor ------------------------------ Message: 3 Date: Tue, 14 Dec 2010 09:11:38 +0530 From: Gurunandan Bhat <gbhat(a)pobox.com> Subject: [Dancer-users] Secure http (https) with Dancer To: Dancers <dancer-users(a)perldancer.org> Message-ID: <AANLkTi=UPa4=FDPGTwaDKaRgiat=6jUETVTD-8KaUKFs(a)mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Hi, How can I write a secure http web application with Dancer. I would like my application to be available on https://myapp Thank you ------------------------------ Message: 4 Date: Tue, 14 Dec 2010 10:07:42 +0500 From: Roman Galeev <noc(a)nelcom-voip.com> Subject: Re: [Dancer-users] Secure http (https) with Dancer Cc: Dancers <dancer-users(a)perldancer.org> Message-ID: <20101214100742.49036a1e(a)lenobook.jh> Content-Type: text/plain; charset=UTF-8 ?? Tue, 14 Dec 2010 09:11:38 +0530 Gurunandan Bhat <gbhat(a)pobox.com> ????????: > Hi, > > How can I write a secure http web application with Dancer. > I would like my application to be available on https://myapp Just put nginx in front of dancer. ------------------------------ Message: 5 Date: Tue, 14 Dec 2010 11:27:59 +0530 From: Gurunandan Bhat <gbhat(a)pobox.com> Subject: Re: [Dancer-users] Secure http (https) with Dancer To: Roman Galeev <noc(a)nelcom-voip.com> Cc: Dancers <dancer-users(a)perldancer.org> Message-ID: <AANLkTimyvru92aj=xwUm1F6cEShOHhiGu-6WbKYavTQ2(a)mail.gmail.com> Content-Type: text/plain; charset=UTF-8 Thank you. I have set up a reverse apache proxy and I was wondering if there was a better way Thanks once again On Tue, Dec 14, 2010 at 10:37 AM, Roman Galeev <noc(a)nelcom-voip.com> wrote: > ?? Tue, 14 Dec 2010 09:11:38 +0530 > Gurunandan Bhat <gbhat(a)pobox.com> ????????: > >> Hi, >> >> How can I write a secure http web application with Dancer. >> I would like my application to be available on https://myapp > > Just put nginx in front of dancer. > _______________________________________________ > Dancer-users mailing list > Dancer-users(a)perldancer.org > http://www.backup-manager.org/cgi-bin/listinfo/dancer-users > ------------------------------ Message: 6 Date: Tue, 14 Dec 2010 10:51:10 +0200 From: sawyer x <xsawyerx(a)gmail.com> Subject: Re: [Dancer-users] Can I subclass DP::Authorize::Credentials from a different namespace To: Gurunandan Bhat <gbhat(a)pobox.com> Cc: Dancers <dancer-users(a)perldancer.org> Message-ID: <AANLkTimGAbcA_7HCDPMvOMhO5BL7YU9GtoEfXbomF16r(a)mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1" Hi! First of all, Dance::Plugin::Authorize has been renamed as Dancer::Plugin::Auth::RBAC<http://search.cpan.org/perldoc?Dancer::Plugin::Auth::RBAC> . This was a crucial change in order to allow a more organic expansion of the Plugin namespace. On Mon, Dec 13, 2010 at 9:10 PM, Gurunandan Bhat <gbhat(a)pobox.com> wrote: > > 1. Can I do this? > Of course. > 2. If yes, how do I set option parameters in config.yml so that they are > passed as a hashref in $opts. > In order to get Dancer to send your subclass the configuration for the plugin, it has to sit on the Plugin namespace. That is, it should be called Dancer::Plugin::My::App::Authorize or something like that. Then just set the correct plugin name in the config.yml file. For example: plugins: My::App::Authorize: credentials: class: Config options: accounts: user01: password: foobar roles: - guest - user user02: password: barbaz roles: - admin If you still wish to separate the namespace, you have two options: 1. Simply read the settings yourself from the config file (setting('MyApp')->{'authorize') or something like that). 2. You can re-register your subclass with Dancer, making sure Dancer sends it its settings automatically. Check the RBAC.pm source for this. When subclassing RBAC, notice it has lexical file-scoped variables (specifically $settings). These variables won't be overridden by simply subclassing or fiddling with the symbol table, since they're sitting in the lexical pad of the file. If you find need for RBAC to refactor and abstract away that part, feel free to make any suggestions or (better yet) patches to do that. Franck is working on refactoring RBAC and he could take that into account, if you approach him with it. Good luck, happy hacking! :) Sawyer. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.backup-manager.org/pipermail/dancer-users/attachments/20101214/1…> ------------------------------ Message: 7 Date: Tue, 14 Dec 2010 10:56:17 +0200 From: sawyer x <xsawyerx(a)gmail.com> Subject: Re: [Dancer-users] Use of uninitialized value $values[0] in... Route.pm line 80 To: Puneet Kishor <punk.kish(a)gmail.com> Cc: dancer-users <dancer-users(a)perldancer.org> Message-ID: <AANLkTinVVV-nvHxmE-vDFyRJsd5mYhEa9usKKbtEGk+W(a)mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1" On Tue, Dec 14, 2010 at 12:30 AM, Puneet Kishor <punk.kish(a)gmail.com> wrote: > How do I debug something like this? > You should activate the "console" logger and set the debugging flag on. You'll notice this line to help you understand what's going on: Dancer::Logger::core("trying to match `$path' " . "against /" . $self->{_compiled_regexp} . "/"); It appears @values is being created by trying to match $path against the compiled regex. That print will basically tell you what's wrong. I would personally just download the latest stable, and run it locally with "perl -IDancer-1.2003/lib bin/app.pl" (YMMV) so I could hack at the file, if I need to. Sawyer. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.backup-manager.org/pipermail/dancer-users/attachments/20101214/0…> ------------------------------ _______________________________________________ Dancer-users mailing list Dancer-users(a)perldancer.org http://www.backup-manager.org/cgi-bin/listinfo/dancer-users End of Dancer-users Digest, Vol 10, Issue 14 ********************************************

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[ proposal ] charset discussion
by damien krotkine 14 Dec '10

14 Dec '10

Hi, This email is to share some thoughts I had while reading this commit : https://github.com/sukria/Dancer/commit/6e30f2fd23a9ab00cb45d54e13556ee30b8… I was willing to fix a minor thing (the fact that the feature provided in the commit works only with utf8, not any other encoding), then I realize that there are 2 concepts of charsets that are mixed in Dancer (at least I think) : - the 'charset' setting is used to set the response headers' encoding and charset (see https://github.com/sukria/Dancer/blob/master/lib/Dancer/Handler.pm#L129 ) - the 'charset' setting is used to read files (with this new open_file feature) These 2 concepts are legitimate, but having them bound to the same setting is error prone : let say you have latin1 template files, and you want your Dancer application to provide UTF8 encoding, you can't. And I can see people trying to fix that by mixing the charset setting, and the ENCODING options of D::P::TemplateToolkit for instance. That will be messy. The Dancer documentation says that the 'charset' setting is "The default charset of outgoing content". I think that it should be kept this way. the 'charset' setting should not be used for local file reading/writing. Also, Dancer::Renderer::templates provides a default layout template ( https://github.com/sukria/Dancer/blob/master/lib/Dancer/Renderer.pm#L200 ), but set its charset as UTF-8 by default, which contradicts the 'charset' documentation : "Default value is empty which means don't do anything. HTTP responses without charset will be interpreted as ISO-8859-1 by most clients.". But maybe I missed something, especially the cases where Dancer::Renderer::templates is used. Anyway, I can see the current situation bite us in the back. Unless I have misunderstood the code, in this case, let me know :) These steps could fix the situation : - open_file() should not refer to the same thing used by the Handler to set Dancer headers - there should be a way to indicate to Dancer that local files read / written are in a given charset - also, my personal opinion is that the 'charset' setting could be utf8 by default, as utf8 is cool :) But that's not mandatory to fix the issues Sadly, I don't know how to do that without adding a new setting, something like 'local_charset', or 'files_charset'... which would be used y open_file, the 'charset' be left as it is now, and used only for Dancer responses. What do you think? I have a branch halfway done, but I'd like to see more inputs and opinions, so that we achieve a common and agreed strategy :) dams

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