[Rails] Re: Forcing a 'process' to wait on an object specific lock

side too). In fact you don't necessarily > need a long lived database lock - it is sometimes easier to have a locked / > locked_by attribute on the model, and only use an actual database lock (or > optimistic locking) when writing to it. > > Actually blocking for a long time on som

[Rails] Forcing a 'process' to wait on an object specific lock

tabase access, for the locked object only, is waiting. I need to block the cron task from executing any further than where the lock is taken until the user task releases the lock (and vice versa). How do I do that? Thanks, Yoram -- You received this message because you are subscribed to the

[Rails] Re: a twist on polymorphism

Thanks all... I ended up solving this much along the lines that Tim recommended - lots of 'has_many' statements in the School model and several custom built accessors such as those that Tim described. I appreciate the help. Yoram On Mar 4, 9:29 am, Matt Jones wrote: > On Mar 3, 4

[Rails] Re: a twist on polymorphism

I'm staying away from STI because I want to be able to add additional asset types over time, none of which share attributes with other assets. So - with STI, I could end up with a table that has hundreds of columns. On Mar 3, 1:13 pm, Colin Law wrote: > On 3 March 2011 21:10, Yora

[Rails] a twist on polymorphism

ongs_to :school end and class School << ActiveRecord::Base has_many :assets end That gets me part way there but I fear is fundamentally flawed. Most of the time it results in complaints from raisl that the table 'Assets' doesn't exist, which is true... Any suggestions

[Rails] Re: invisible attributes? - RESOLVED

I was able to resolve this - in order to pull the db, I had to increasemax_allowed_packet on MySQL The weirdness on the invisible attribute was because of the way the SELECT works: http://caboo.se/doc/classes/ActiveRecord/MissingAttributeError.html Yoram -- Posted via http://www.ruby

[Rails] invisible attributes?

I recently tried to pull a database from our server and load it into my local MySQL. I got the dreaded 'MySQL server has gone away'. Digging a little deeper, I found that it choked on the first User record. We recently added several attributes of type 'binary' to the User object. I suspected an iss

[Rails] Re: problems with after_save callback

Thansk Luke. I'm not familiar with observers but will research them. Not yet knowing exactly what they are, I liked the fact that the after_save handler guarantees that all the after_save processing will be completed in the same thread as the save itself, thus avoiding the potential for any race co

[Rails] problems with after_save callback

missions << self So - that works just great, as long as I never reload the emitter's emissions (emitter.reload). If I do, then my new emission is gone. Is there any way to force the new emission to really save in the database before the after_save handler completes? Thanks, Yoram

[Rails] problems unpacking log4r

per recommended renaming the 'src' folder in the log4r gems dir to 'lib'. This magically works. I can now load my environment, although I still get that pesky message about the specification file missing. Any suggestion sas to how to clean this up would be very much appr

[Rails] Re: is it possible to render a modal dialog box from the server?

; modal box (since it's the server that determines that the user's > > credentials are missing). > > > Any ideas how to do this? > > > Thanks, > > Yoram --~--~-~--~~~---~--~~ You received this message because you are subscribed