November 2014 - dancer-users - lists.preshweb.co.uk

Can I convert App::Notifier::Service from Dancer 1 to Dancer2?
by Shlomi Fish 07 Aug '15

07 Aug '15

Hi all, Is there a good reason why I should *not* convert https://metacpan.org/pod/App::Notifier::Service from Dancer 1 to Dancer2? It's a simple web app, meant to run synchronously, and I can debug it by using perl -d, and last time I tried doing s/Dancer/Dancer2/g everything worked nicely. Is there a good enough reason to stay with Dancer 1? Regards, Shlomi Fish -- ----------------------------------------------------------------- Shlomi Fish http://www.shlomifish.org/ http://www.shlomifish.org/humour/bits/Can-I-SCO-Now/ - "Can I SCO Now?" If it isn’t in my email, it doesn’t exist. And if the whole world says one thing and my email says something different, email will conquer. — an Israeli Linuxer. Please reply to list if it's a mailing list post - http://shlom.in/reply .

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New Dancer2 on its way to CPAN: 0.155000
by Sawyer X 28 Nov '14

28 Nov '14

Hey everyone! A new version of Dancer2 has been shipped to CPAN! This release doesn't include too many crazy changes, but a few useful ones: * AutoPage handler doesn't serve layouts. * Fixed race condition in engine logging. * No crash on serializers and empty content. * Configurable layouts directory. * Provide all promised logger format options. I'd like to thank all those involved in this release (by chronological order of the changes file): Dávid Kovács, Sawyer X, Lennart Hengstmengel. The changelog is as follows: [ BUG FIXES ] * GH #773, #775: AutoPage handler no longer renders layouts. (Dávid Kovács, Sawyer X) * GH #770: Prevent crazy race condition between the logger engine and other engines. This means engines now call "log_cb" to log. (Sawyer X) * App now has default name to caller package. (Sawyer X) * Serializers will not try to serialize empty content. (Sawyer X) * Lots of cleanups in Core::Request in favor of Plack::Request. (Sawyer X) [ ENHANCEMENTS ] * Layouts directory can be configured using 'layout_dir'. (Sawyer X) * GH #648, #760: Logger format now supports 'h', 'u', 'U', 'h', 'i'. They are documented but weren't really available. (Lennart Hengstmengel) * Serializers having errors will not fail if there is no logger. (Sawyer X) * Create a request object with a single argument of $env, like Plack::Request. (Sawyer X) [ DOCUMENTATION ] * Remove documented hack for static content because we use the middleware now anyway. (Sawyer X) * Document further the difference between splat and megasplat. (Dávid Kovács)

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New trial release of Dancer1 on its way to CPAN
by Yanick Champoux 26 Nov '14

26 Nov '14

Hi all, Dancer 1.3133-TRIAL is on its way to CPAN. If nothing explodes, it'll be promoted to general availability in the second week of December. As usual, the changelog is reproduced below. Also as usual, a huge thank to everybody involved. Y'all rock. :-) Joy, `/anick 1.3133 2014-11-26 [BUG FIXES] - Test was failing for Perl 5.21+ (error message changed). (GH#1073, cpansprout) [DOCUMENTATION] - Mention environment variables in Dancer::Config. (GH#1085, Sniperovitch) - Replace "return send_file" with "send_file". (GH#1089, Ashley Willis) - Fix NAME section for Dancer::Plugin::Ajax. (GH#1090, Ivan Bessarabov) - Fix wrong layout directory in documentation. (GH#1091, olof) [ENHANCEMENTS] - Speedup in the upload of large files. (GH#1092, snakpak) [STATISTICS] - code churn: 6 files changed, 100 insertions(+), 35 deletions(-)

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Testing D2 Plugins calling plugin_setting
by Henk van Oers 24 Nov '14

24 Nov '14

In Dancer2-Plugin-Passphrase I have this test: --- 003_default_settings.t --- use Test::More tests => 3; use strict; use warnings; use Dancer2; use Dancer2::Plugin::Passphrase; my $secret = "Super Secret Squirrel"; my $rfc2307 = passphrase($secret)->generate->rfc2307; like($rfc2307, qr/^{CRYPT}\$2a\$04\$/, 'RFC compliant hash generated'); ok(passphrase($secret)->matches($rfc2307), 'Match plaintext to hash'); ok(!passphrase('WRONG')->matches($rfc2307), 'Incorrect passwords should be rejected'); --- --- CPANtesters use the latest D2, which contains a "croak 'No DSL object found'" See: http://www.cpantesters.org/cpan/report/d4473e02-7246-11e4-ac74-95bbe0bfc7aa How do I add a DSL to this test? Thanks, Henk

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Incorrect attempts to serialize HTML
by Andrew Beverley 23 Nov '14

23 Nov '14

Hi guys, I apologise in advance that this is rather vague, but I'm hoping that someone might be able to point me in the right direction of where I should be looking. I'm getting some strange problems with Dancer2 and the "auto serializer". I have set serializer => 'JSON'; in my app, but under some circumstances it is trying to serialize HTML content, with the subsequent errors that you would expect of such an action. The problems seem to be related to my error handling (using Log::Report). My implementation is currently rather poor and complicated, so I won't go into the details here, but I wondered whether someone can point me to the relevant parts of the Dancer2 code that I should start poking around in (in particular the code which detects whether to serialize the data). I've looked at serialize() in Serializer::Mutuble, but as far as I can tell this function is not being called. Where else should I look? If I remove the aforementioned serializer statement then everything works as expected. Thanks, Andy

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exceptional dancing
by WK 23 Nov '14

23 Nov '14

Hi! I have no real experience using exceptions in my code. Neither I have not seen good guide how to use exceptions in software developent. I have lot of small pieces about it, but no big picture. So I have simple question: how and where to catch errors in Dancer app? I looked to Dancer::Error and it seems good, but still I don't get, where is the best place to catch and handle errors? Is it good idea to have one simple dispatcher (like in bin/app.pl), so every exception is falling to the base script and handled there? Or is better to catch them in place all over the code? Or? Is there some "best practice"? -- Wbr, Kõike hääd, Gunnar

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Advent Calendar
by Sawyer X 19 Nov '14

19 Nov '14

Hi everyone, We're beginning to work on the Advent Calendar for Dancer. We've collected a few ideas on the Dancer2 repo[1] and we're interested in having more ideas and more writers. Do you have additional ideas? Write us! Do you want to write about something? It's your time to shine! Let us know. Thanks, Sawyer.

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New Dancer2 release: 0.154000
by Sawyer X 17 Nov '14

17 Nov '14

Hey everyone, We've just released a new Dancer2 version, approximately two weeks after the previous one. This version contains quite a few changes. In statistics: * Github issues resolved: 21 * Bugs resolved: 7 * Enhancements introduced: 12 * Documentation changes: 6 * Total changes introduced: 25 Big ones: * Serializers always serialize, no matter what. This is important! * Static files are finally served before routes and don't create a new route. This is huge! * Catching template rendering errors. Very crucial! * Should fix Windows testing errors. Sorry about that! * Named params can be freely mixed with splat and megasplat. Woohoo! * New testing manual! See: Dancer2::Manual::Testing. * You can disable "Server" tokens header. Finally! Thank you to everyone who worked on this release (in order of appearance): Sawyer X, Russell Jenkins, Steven Humphrey, Theo Van Hoesel, Mickey Nasriachi, Omar M. Othman, Dávid Kovács (DavsX), and Johan Spade. The entire changelog is available below: 0.154000 2014-11-17 15:36:31+01:00 Europe/Amsterdam [ BUG FIXES ] * GH #744: Serialize anything, not just references. (Sawyer X) * GH #744: Serialize regardless of content_type of serializer. (Sawyer X) * GH #764: Catch template render errors. (Russell Jenkins, Steven Humphrey) * Calling uri_for(undef) doesn't crash. (Sawyer X) * GH #732: Correct name for 403 (Forbidden, not Unauthorized). (Theo van Hoesel, Sawyer X, Mickey Nasriachi, Omar M. Othman) * GH #753: Syntax of parameterized types. (Russell Jenkins) * GH #734: Failing tests on Windows. (Russell Jenkins, Sawyer X) [ ENHANCEMENTS ] * GH #664, #684, #715: Handler::File replaced for static files with Plack::Middleware::Static, allowing files to be served *before* routes. This means hooks do not apply to static files anymore! (Russell Jenkins, DavsX) * Engines now have "logger" attribute to log errors. It sends the Dancer2::Logger:: object, if one exists. (Sawyer X) * Serializers do not need to implement "loaded" method. (Sawyer X) * GH #733: In core: response_xxx removed in favor of generic standard_response. (Sawyer X, Mickey Nasriachi, Omar M. Othman) * GH #514, #642, #729: Allow mixing named params, splat, and megasplat. (Russell Jenkins, Johan Spade, Dávid Kovács) * GH #596: no_server_tokens works, as well as DANCER_NO_SERVER_TOKENS. (Omar M. Othman, Sawyer X, Mickey Nasriachi) * GH #639: Validate engine types in configuration. (Sawyer X, Omar M. Othman, Mickey Nasriachi, Russell Jenkins) * GH #663, #741: Remove "accept_type" attribute and other references. (Mickey Nasriachi, Theo van Hoesel) * GH #748: Provide forwarded_host, forwarded_protocol. (Sawyer X) * GH #748: Do not provide a default env, require env for a request. (Sawyer X) * GH #742: Update test skeleton to use to_app. (Dávid Kovács) * GH #636: Use Plack::Test in more tests. (Dávid Kovács) [ DOCUMENTATION ] * GH #656: Dancer2::Manual::Testing as a guide for testing Dancer2 applications. (Sawyer X) * Improved documentation of route matching. (Russell Jenkins) * Migration document update relating to enhancements. (Sawyer X, Mickey Nasriachi) * GH #731: Document changes in session. (racke, Sawyer X, Mickey Nasriachi, Omar M. Othman) * Document "id" attribute in Request object. (Sawyer X) * Correct Cookbook examples on command line scripts. (Sawyer X)

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Some questions about Logger and format_message in Dancer2
by Lennart Hengstmengel 12 Nov '14

12 Nov '14

Hi, I'm using Dancer2 in a RESTful JSON API. Works like a charm. Made everything so much easier! :) Now I needed to implement some logging, and I noticed that the documentation describes some placeholders that haven't been implemented yet, like %h (host emitting the request) and %{header}h (value of a request header). I really needed those two so I cloned the repo and implemented these myself, which was quite easy. I'll push the changes and create a pull request. But I have some questions: - According to the docs, the (not yet implemented) placeholder %i should give the "request id". I'm not sure what that should be? Some kind of session id or something? - lib/Dancer2/Core/Role/Logger.pm:74 : $level = sprintf( '%5s', $level ); Here $level is padded with spaces if it's shorter than 5 chars. So "info" gets an extra space. I'm not sure about the rationale, as "warning" has 7 chars so this line seems a bit pointless. (And the extra space before "info" makes my OCD play up ;)) - lib/Dancer2/Core/Role/Logger.pm:83 : return "[" . strftime( $block, localtime(time) ) . "]"; Why is the custom formatted time/date enclosed in brackets? Wouldn't it be better to do that in the log_format config directive if you wanted to? Obviously I'm hesitant to change the behaviour of these last two things as that may break stuff (like log parsers)... Thanks, Lennart

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no request method
by Jean-Marc Choulet 02 Nov '14

02 Nov '14

Hello, Is it possible to create a no request method in Dancer2 module ? get qr{/(\d+)/members} => sub { my ($department) = splat; ... my $sth = database('foo')->prepare($queryString); ... # call my method doit(); my $data = doit()... } sub doit { # I want to retrieve some data from my database 'foo' return $data } Thanks, Jean-Marc

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