December 2020 - dancer-users - lists.preshweb.co.uk

Debugging sessions
by Nikola Mitev 29 Jun '23

29 Jun '23

Hi all, I have an annoyingly intermittent problem where on successful authentication the session info disappears and the user is endlessly redirected to the login page. It happens about once a month on a site with 10-20 logins daily. Once it happens to a user, it keeps happening for that user only. A restart of the app usually fixes the issue, and I am yet to see someone who had this problem to report it again at a later stage. Had about 10 cases so far in total. The cookie is generated on accessing the login page, stored in the browser and sent with the login POST request so I can verify cookies are enabled. The user is then authenticated, data added to the session including an 'authenticated' flag and they are redirected to their dashboard. Right before the redirection the session data is present. They make a request for the dashboard following the redirect, this triggers a session authenticated check which fails as no data is available for the session. They are then redirected for authentication and so on in a loop. If I restart the app the issue vanishes. hook before => sub { # <snip> if (!session('authenticated')) { forward '/login'; } } post '/login' => sub { # user authentication and session storage here, then the debug code and the redirecton: my $authenticated = session('authenticated'); $log->info("User authenticated ($authenticated), redirecting to $target_route"); return redirect $target_route; }; I don't have an explicit check on cookie size - not sure how to check it doesn't exceed 4K - but find it unlikely this is the issue. If that was the problem it should be happening persistently for a user regardless of restarts etc? Hope all this makes sense, I am looking for general advice on how to troubleshoot this but any ideas at all will be very much appreciated. Nik

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CI using GitHub Actions
by Gabor Szabo 12 Jan '21

12 Jan '21

Hi, I have already started to work on this, but I would be glad to get your input on setting up CI on GitHub Actions: https://github.com/PerlDancer/Dancer2/issues/1571 Gabor

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List of DSL keywords
by Gabor Szabo 22 Dec '20

22 Dec '20

Hi, Let's separate this thread as this is a technical issue. Dancer2::Core::DSL might contain the definite list, but I , as a regular user, don't see it I don't see it in the documentation. My suggestion would be either to list them in the POD of Dancer2::Core::DSL or include a link to https://metacpan.org/pod/distribution/Dancer2/lib/Dancer2/Manual.pod#DSL-KE… as that's where they are documented. Gabor On Mon, Dec 21, 2020 at 12:43 PM Russell Jenkins < russell.jenkins(a)strategicdata.com.au> wrote: > ps. The definite list of keywords is in Dancer2::Core::DSL. > > > On 21/12/20 5:14 pm, Gabor Szabo wrote: > > > For example looking for the full list of words in the DSL: > I clicked on both links saying DSL, neither of them had the list, nor a > link to the manual > where I findall found it: > > https://metacpan.org/pod/distribution/Dancer2/lib/Dancer2/Manual.pod#DSL-KE… > > > > >

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Development of Dancer stalling? What to do?
by Gabor Szabo 22 Dec '20

22 Dec '20

Hi, as I am working on the Perl Dancer video course I need to look up lots of things in the documentation on https://metacpan.org/release/Dancer2 and many times I feel either that it is difficult to find what I was looking for For example looking for the full list of words in the DSL: I clicked on both links saying DSL, neither of them had the list, nor a link to the manual where I findall found it: https://metacpan.org/pod/distribution/Dancer2/lib/Dancer2/Manual.pod#DSL-KE… Another thing I was looking for is the list of types one can use out of the box to describe the routes. I could not find it. ------------------------------------- It is frustrating, but this is open source, I can help improve it, right? I thought I'll open a ticket, maybe even send a pull-request. Looked at https://github.com/PerlDancer/Dancer2/ and this made me even more frustrated. There are 110 open issues and 32 open pull-request. That's 32 things some people have worked on and have not been integrated. (If you like, you can compare the numbers with Mojolicious https://github.com/mojolicious/mojo 47 3 Flask https://github.com/pallets/flask 18 4 You can also look at the commit history and you see there was hardly any activity recently. I keep recording the course, but I feel reluctant to open issues or work on pull-request because I don't want to waste my time on something where the chances of integration seem to be so low. ------------------------------------------- Why has the development slowed down? How could it be fixed? Have the core developers (almost completely) lost interest? Do they lack the time? Could companies that use Dancer help financially? Could new people step up to become core developers? regards Gabor

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Dancer DSL vs. Perl Critic
by Mike Diehl 21 Dec '20

21 Dec '20

Hi all, So I've got a line of code like: prefix "/apps/Credit_Card/"; I'm using VS Code, which uses Perl::Critic, to edit the program. When Perl::Critic encounters the line above, it see it as a "problem": String found where operator expected at - line 3, near "prefix "/apps/Credit_Card/"" (Do you need to predeclare template?)syntax error at - line 3, near "prefix "/apps/Credit_Card/"" I know that I can put a ### No critic at the end of the line, but that kind of defeats the purpose of using the tool. How SHOULD I make this "problem" go away? Hope that was clear. Mike.

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Re: [dancer-users] Major sites using Dancer
by Dave Cross 14 Dec '20

14 Dec '20

On Mon, 14 Dec 2020 at 10:24, David Precious <davidp(a)preshweb.co.uk> wrote: > > So - if anyone on-list runs a Dancer-powered site and would be willing > for it to be featured on www.perldancer.org/dancefloor please let me > know :) > Hi, You should probably remove The Political Web from that list. I never had the time to turn it into the site I planned and I'm about to let the domain lapse. In exchange, however, I can offer the Line of Succession, a site offering a view on the line of succession to the British throne going back two hundred years. https://lineofsuccession.co.uk/ Dave...

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Major sites using Dancer
by Andrew Beverley 14 Dec '20

14 Dec '20

Dear all, Does anyone know of any major websites using Dancer/Dancer2? It would be useful to know if there are, to help me build a case justifying its use to others. Thanks, Andy

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Dancer Course recorded this December
by Gabor Szabo 11 Dec '20

11 Dec '20

Hi, I've mentioned elsewhere, but not here yet. I have a little project to create a Dancer video course during the first 25 days of December. Making a little progress every day. My announcement is here: https://szabgab.com/perl-dancer-course.html recorded as a video message. I am building the slides for the course here: https://code-maven.com/slides/dancer/ The course is being published and sold on Leanpub: https://leanpub.com/c/dancer I'd be glad to get your opinion as to what you'd want me to cover. I'll do my best to do that. Gabor

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