Re: [Catalyst] General Web- and OO-question
2009/3/27 Cory Watson jheep...@gmail.com: 2009/3/27 Rodrigo rodrigol...@gmail.com But I can't instatiate the object because it throws an exception because age is not valid, isn't it? Or does Moose check constraints only on provided attributes. This can't be true with required attributes, can it? As long as the attribute is not required = 1, no exception is thrown. I think you are missing his point. He wants to instantiate an object from the form, but if he uses his Moose object then the things he wants to validate (errors) will prevent him from getting an instance of his class. If name is required or isa 'Str' then if it gets an arrayref, he can't use the object (as either it missing or being the wrong type throws an exception). I don't know if this is a good idea yet, but it's fairly easy to create a proxy object for a given class, less all the validation: http://www.pastie.org/429140 YMMV, but it would do what you want, as you could promote it to a real value iteratively after validation... Why try to make your objects work harder than they have to? If you have a multi-step process, collect all your data along each step then initialize your object with the data at the end. If you need to do validation along the way, you could reuse the moose type constraints in the classes meta information without constructing an object. -- -Scott McWhirter- | -Technology Consultant- [ Cloudtone Studios - http://www.cloudtone.ca ] ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] General Web- and OO-question
On Fri, Mar 27, 2009 at 5:41 PM, Hans Dieter Pearcey hdp.perl.catalyst.us...@weftsoar.net wrote: Another option mentioned elsewhere in the thread is a proxy object. Moose certainly exposes enough metainformation to make this possible, but I think there'd still be a good amount of fiddly work required; for example, you'd either have to use AUTOLOAD or generate anonymous classes on the fly, or switch to an explicit proxy API. I don't think any of this is insurmountable; the biggest reason I haven't tried one or all of these is that I'm lazy. No doubt someone could expand upon MooseX::Params::Validate along with using the metaclass for the Moose Class. -- -Scott McWhirter- | -Technology Consultant- [ Cloudtone Studios - http://www.cloudtone.ca ] ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Requirements for Catalyst
On Tue, Feb 24, 2009 at 13:38, Jason Kohles em...@jasonkohles.com wrote: EC2 has persistent storage now (now meaning as of last April), so you can have volumes on your hosts that are backed by S3, so you don't lose your data when the instance goes away. EBS volumes aren't backed on S3. They are simply persistent block devices (run on NAS storage) that you can attach and detach from EC2 instances. However, you can snapshot the volume and these snapshots are stored on S3. The benefit to snapshots is that the snapshots are incremental backups (only store what has changed since the last snapshot) and they are stored compressed. To re-initialize a snapshot, you can simply create a new EBS volume based on a snapshot. Also important to note is that with EBS volumes, you get charged based on IO requests as well as the storage space used by the size of the volume (ie: you have a volume of 180Gb, you get charges for 180Gb of storage even if you have nothing on it). Ultimately though, if you don't need the flexibility of EC2 and are planning to just have one host running 24/7, then EC2 is roughly the same price as just getting a colocated server somewhere. For a small instance it's about $75 a month on average to run (instance hours charges). A large instance is about $300 a month. If you want to run a database server, i recommend backing onto an EBS volume and running a large instance... there are some serious problems with IO performance on the small ec2 instances. ta! -- -Scott McWhirter- | -konobi- [ Technology Consultant - Cloudtone Studios ] ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] [OT] Catayst-ish PHP web framework?
On Tue, Feb 10, 2009 at 12:59, Julien Gervais-Bird catal...@jgb.ca wrote: So, I'm thinking there's no better place, than Catalist, to ask about a good PHP framework, that will make sense to a Catalyster. I'm in a similiar situation. I initially attempted to use CakePHP. After having wasted too much time with Cake, I switched to Symfony. I'm still in the process of learning it (I'm working on their Jobeet tutorial) but I already have a much better feeling about it. For example, with Cake, I was struggling simply to get the user interface language in urls. With Symfony, I just have to follow lesson 19 of their Jobeet tutorial. I've been using CodeIgniter recently and it was pretty reasonable. It's more like catalyst in terms of providing a structure for organizing your code, but it doesn't really enforce anything specific upon you. As far as MVC frameworks go, I didn't mind it too much. ta! -- -Scott McWhirter- | -konobi- ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Using Selenium to test Catalyst app
You need to be running the Selenium-RC server yourself. You can get that from http://www.openqa.org/ -- -Scott McWhirter- | -konobi- On Tue, Jan 27, 2009 at 19:15, Daniel Austin daniel.aus...@gmail.comwrote: Hi Is anyone successfully using Test::WWW::Selenium::Catalyst? I can't get the module to install on Fedora. Looking at reports JROCKWAY/Test-WWW-Selenium-Catalyst-0.02.tar.gz in cpan suggests that most people can't. Have had a look at the doco and checked firefox-bin is in my path and LD_LIBRARY_PATH is set but no joy. The actual error message I'm getting is Can't start selenium: Error requesting http://localhost:/selenium-server/driver/: If I go to that URL in a browser Selenium responds but with a 403 error Forbidden for proxy. Have used Selenium successfully for both Rails and Java projects but I confess that I find its internals opaque. Any ideas? Am running Perl 5.10.0. Thanks Dan ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/ ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Catalyst modperl - child process segmentation fault
Hi, This looks like the general DBI multi-process issue. When you fork any child processes, any variables in the parent process are copied across, this includes the filehandle no. for the socket to the mysql server. All of a sudden you have 50 processes talking down the same wire. What you want to do is disconnect (but not destroy) the database handle before forking and then get each child to reconnect() themselves (DBI can deal with pooling transparently, iirc). Apache::DBI does this for you, but iirc it doesn't _quite_ work correctly. ta! -- -Scott McWhirter- | -konobi- On Mon, Jan 5, 2009 at 11:40, Todd Lyons tly...@ivenue.com wrote: On Mon, Jan 5, 2009 at 3:15 AM, Terence Monteiro tere...@deeproot.co.in wrote: Is it necessary to close open database handles after handling each HTTP request? Should I add code in my begin and end actions to open and close handles each time? I'm still pulling off hair on this segfault problem. It shouldn't be necessary. You completely throw away the benefits of connection pooling if you create/teardown a db connection every single webpage access. I am initializing the database connection in a Controller. Is there any problem in this, though it may not be the best design. Will putting the database initialization code in the Model help? I have included the backtrace for your information. Have I missed anything? Model here, works well for us. Ultimately it's up to your if you want to try. I'm not expert enough to know whether it would make a difference. #0 0xb6038590 in mysql_ping () from /usr/lib/libmysqlclient.so.15 #1 0xb61e9d93 in XS_DBD__mysql__db_ping () from /usr/lib/perl5/auto/DBD/mysql/mysql.so What's your max clients set to in mysql? How many connections are open? (show processlist when logged in to mysql as root will be most illuminating). What's your connection_timeout set to? If you have a short connection timeout, then low traffic will result in db connections getting closed by mysql, which DBI only handles if your code is written to handle it (though I don't expect this to be a problem because your description seems to imply a problem on startup, not while running). I don't face the problem when I run apache as a single process (MaxClients = 1). Another problem we had was if you configured pam/nss to use LDAP, when apache started and tried to create all the threads at once, not all threads were able to get the uid from nss, so some would be the apache user, and some would still be root. Was very strange. But that doesn't sound like what you're seeing either. Good luck! -- Regards... Todd All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident. ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/ ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
