[Catalyst] A point of confusion/frustration on chained actions
Steve Kleiman
steve at prodhub.com
Wed May 19 23:32:06 GMT 2010
I second that. I'm another Catalyst newbie who would like to submit doc patches for review, but I don't know the process....
On May 19, 2010, at 4:24 PM, Jeff Albert wrote:
> As an unabashed Catalyst n00b, I spent a couple of hours earlier this week bashing through this same design conundrum on my own application, and although I did ultimately come up with the solution that Ash describes under my own steam, the Catalyst::DispatchType::Chained documentation didn't do much to help me with the process at all - nor did the Catalyst tutorial.
>
> I've never contributed, so I don't know the process, but it would be nice to see this information in the documentation. If somebody who knows what's necessary mails me off-list with the information on how to get started, I would be willing hack up Ash's reply into a fairly minimal doc patch in whichever location is appropriate.
>
> Cheers,
> Jeff
>
> -----Original Message-----
> From: Ash Berlin [mailto:ash_cpan at firemirror.com]
> Sent: Wednesday, May 19, 2010 3:39 PM
> To: The elegant MVC web framework
> Subject: Re: [Catalyst] A point of confusion/frustration on chained actions
>
> On 19 May 2010, at 23:16, Stephen Howard wrote:
>> I am trying to sort out some interdependent chains and I'm having trouble figuring out why the urls I'm trying to build aren't working out.
>>
>> I have a site where the primary objects of interest are flash-based tutorials. Each tutorial can have comments, and each comment can have replies. I'm using jQuery to manipulate comments in a REST fashion, and I'm aiming for a url map like this:
>>
>> /tutorials # GET a list of tutorials, or POST a new tutorial
>> /tutorials/* # GET/POST/DELETE a specific tutorial
>> /tutorials/*/comments # GET the comments for a tutorial, or POST a new comment
>> /tutorials/*/comments/* # GET/POST/DELETE a specific comment
>> /tutorials/*/comments/*/replies # GET the replies for a comment, or POST a new reply
>> /tutorials/*/comments/*/replies/* # GET/POST/DELETE a specific reply
>>
>> But the best I've been able to come up with is this:
>>
>> /tutorials
>> ^tutorials/(\d+)$
>> /tutorial/*/comments
>> /tutorial/*/comment/*/replies
>> /tutorial/*/comment/*/reply/*
>>
>> missing: /tutorial/*/comment (what would I call it? /tutorial/*/cmt ?)
>>
>> Essentially I'm hitting an issue with is due to the (seeming?) impossibility of matching a chained set of actions at multiple url depths. Is it possible to build the url structure I'm looking for above using chained actions?
>>
>> thanks,
>> Stephen
>
> You can get it exactly as you want:
>
> (manually re-ordered the below to match your desired list)
> [debug] Loaded Chained actions:
> .-------------------------------------+--------------------------------------.
> | Path Spec | Private |
> +-------------------------------------+--------------------------------------+
> | /tutorials | /tutorials (0) |
> | | => /all_tutorials |
> | /tutorials/* | /tutorials (0) |
> | | -> /a_tutorial (1) |
> | | => /show_tutorial |
> | /tutorials/*/comments | /tutorials (0) |
> | | -> /a_tutorial (1) |
> | | -> /comments (0) |
> | | => /show_tutorial_comments |
> | /tutorials/*/comments/* | /tutorials (0) |
> | | -> /a_tutorial (1) |
> | | -> /comments (0) |
> | | -> /a_comment (1) |
> | | => /show_comment |
> | /tutorials/*/comments/*/replies | /tutorials (0) |
> | | -> /a_tutorial (1) |
> | | -> /comments (0) |
> | | -> /a_comment (1) |
> | | -> /replies (0) |
> | | => /show_replies |
> | /tutorials/*/comments/*/replies/* | /tutorials (0) |
> | | -> /a_tutorial (1) |
> | | -> /comments (0) |
> | | -> /a_comment (1) |
> | | -> /replies (0) |
> | | -> /a_reply (1) |
> | | => /show_reply |
> '-------------------------------------+--------------------------------------'
>
>
>
> sub tutorials : Chained('/') PathPart CaptureArgs(0) {
> # stash tutorials rs
> }
> sub all_tutorials : Chained('tutorials') PathPart('') Args(0) {
> # empty, or set stash for view
> }
>
> sub a_tutorial : Chained('tutorials') PathPart('') CaptureArgs(1) {
> # stash tutorial
> }
> sub show_tutorial : Chained('a_tutorial') Args(0) PathPart('') {
> # setup view
> }
>
> sub comments : Chained('a_tutorial') CaptureArgs(0) PathPart {
> # stash comments rs from stash->{tutorial}
> }
>
> # You get the idea hopefully....
> sub show_tutorial_comments : Chained('comments') Args(0) PathPart('') {}
> sub a_comment : Chained('comments') CaptureArgs(1) PathPart('') {}
>
> sub show_comment : Chained('a_comment') Args(0) PathPart('') { }
>
> sub replies : Chained('a_comment') PathPart CaptureArgs(0) {}
> sub show_replies : Chained('replies') Args(0) PathPart('') {}
> sub a_reply : Chained('replies') CaptureArgs(1) PathPart('') {}
> sub show_reply : Chained('a_reply') Args(0) PathPart('') {}
>
>
> -ash
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