similar to: ActiveRecord::Base::find_for_create_modify

Hello, to implement some some kind of optimistic locking, I want to build a view, where an object is displayed together with a link containing the data of the displayed object. My first try looked something like <%= object.object_discription %> <%= link_to "action", :action => "take_action", :data => object %> this won''t work because object is of

Hello, I have a database table with a primary key not being a simple id but three columns. By overriding update() and create() I got Rails to work with that table quit good. Except for the destroy() action. From the resulting trace I can see that the old version of destroy() is called from transaction.rb. I think this lines might be the reason that I''m unable to override detroy():

Hello to all, I ran into a weird problem with an ActivRecord. I have a table named "build_order" with a column named "type" that is a foreign key to a table called "building_type". In a controller I try to read all the build_orders with "BuildOrder.find :all" and get the following error and stack trace: (eval):1:in `instance_eval'': compile

Hi there I''m planning to build "The Perfect Rails/Debian/Lighttpd Stack", published by Ezra Zygmuntowicz and Sean Schertell at http://brainspl.at/rails_stack.html I''m wondering what sort of constant maintanance that setup would incur. What actions have be regularly performed to keep this setup healthy and secure under normal conditions? Alder

Hi I was recently taught about the useful ActiveRecord::Base#serialize. It''s very useful for persisting arbitrary objects through the regular database. For example, say you want to store a Set of all the years a Convention took place. You do: class Convention < ActiveRecord::Base serialize :years, Set end This effectively creates a Convention#years attribute, which is a set: you

File.open in core Ruby is nifty, in that it automagically closes the file when you''re done using/manipulating it. I''m wondering whether there''s something like that for ActiveRecord? So you can do: AR.find(23).open {|ar| ar.foo = ''bar'' ... } And ar.save would be called when the block closes. -- -Alder

Hello, I am attempting to create several plots based on "site" (~300 total) and am having trouble with the code. I simply want to create a plot using the code, plot(year, peak), for the following dataset. I would like for each site to be plotted on a separate page and the plots saved in a directory. Would a "foreach" loop work? I tried a "by" statement, but

I''m running script/console but keep getting the message that irb.bat is not recognized as an internal or external command, operable program or batch file. If it means anything I am running instant rails. I can invoke irb straight forward. TIA Stuart -------------- next part -------------- An HTML attachment was scrubbed... URL:

As I, like many people, are coming to ruby in the rails era, I''m curious about how Ruby Web Dev was done prior to rails. Any veterans want to share their insights? -------------- next part -------------- An HTML attachment was scrubbed... URL: http://wrath.rubyonrails.org/pipermail/rails/attachments/20060518/20cde24d/attachment.html

So I want to SELECT from multiple tables, so as to be able to do "SELECT FROM foo, bar WHERE foo.id=bar.id AND bar.baz=23". How do I do it with AR#find? Also, I need this for associations. has_many et. al. have :finder_sql, which is nice, but feels like a Pyrrhic: it''s basically doing the association in pure SQL, defeating the purpose of AR. -- -Alder

Hi Let''s say we set session[:foo] = ''bar''. Now we want to remove the :foo key completely. How do you do that? Appearantly, session is a CGI::Session [1] instance, so it doesn''t have #delete like Hash. I tried: session[:foo] = nil But then debug(session) shows an empty :foo key. I''d like to remove that key, as my session is already pretty crowded. Is

Hello, I need to store somewhere one hundred of static ressources text field (internationalization). I wonder if it better to put them in a database or in a hash defined at app startup (in environment.rb) I would go to the second one, but am I right ? Thanks -- Posted via http://www.ruby-forum.com/.

Hi there I''m considering Rails for a new web-application planned to be built from scratch. The application has an extensive web front, and in fact most of the application is interfaced through that front and engaged through clients'' HTTP requests (i.e. the conventional way web-applications and "dynamic web-sites" work). However, some essential parts are supposed to

Hi there I need to store additional attributes on join table. Searching the Wiki [1] revealed two possible methods: 1) push_with_attributes, as described by Justin Palmer [2]. Unfortunately, "this method is now deprecated" [3]. Even if it wasn''t, there seem to be inherent problems with that approach, for example with updating those additional attributes, though Joshua Muheim

Hello, I''ve heard these words to describe a RoR application returning an empty page. This happen from time to time even here, in the forum. That is the cause of this misbehaviour ? Is it related with something external to RoR itself ? What is the solution to avoid the WSOD ? -- Posted via http://www.ruby-forum.com/.

Hi folks, I''m a linux noob, and I''m trying to pick a distro for my rails server. I don''t want to start a flame-war about linux distros! I''m interested in the best distribution for these criteria: 1 - Simplicity of getting ruby and rails set-up (gem updates) 2 - Stability (it is a server, after all) 3 - Support resources (community, and as a fall-back, paid

Hi I''m choosing a database for a new Rails application. I pretty much ruled out PostgreSQL, since despite good reviews of the database itself, it seems it has countless issues with Rails (for example: in recent releases migrations don''t work, and unit-tests fail). So I should now choose between MySQL 4.1, which as I understand enjoys widespread popularity - perhaps the most

Hi folks, Does anyone know how to tackle Swedish letters in Rails. Am I completely off track in thinking that it should be done using map or regex in some clever way? Bealach

Hi, In my application I want to find out the occurance of substring "http:\\" in the main string "http:\\www.abc.com" Here how to find out whether substring "http:\\" is present in my String? & if substring "http:\\" is present then I want to delete it from main string. How to do this? PLs help me. Thanx in advance. Prash -- Posted via

I really hope this is not a bad question (as in he''s abusing the list). However I could use a little direction (even though I''m reading books, tutorials) Right now I''m getting a undefined method `category'' for 4:Fixnum The specific lines from the rhtml file are: <td><%= link_to position.category_id.category, :action => "show", :id =>