Plugins - ActiveRecord::Base Without Table - Agile Web Development
Get the power of ActiveRecord models, including validation, without having a table in the database. class Contact < ActiveRecord::BaseWithoutTable column :name, :string column :email_address, :string column :message, :text validates_presence_of :name, :email_address, :string end This model can be used just like a regular model based on a table, except it will never be saved to the database. Name U
Twitterのトラブルから見る、DB分割でスケーラブルなRailsサイト構築:TKMR.blog.show
最近、2.0な方々の間でTwitterが話題になってる。で、そのTwitter自体も面白いんだけど、TwitterについてDHHがブログを書いてRailsでの大規模サイト構築が話題になってるのが面白い。 Twitter trouble (Loud Thinking - DHH) まずTwitterの高負荷について言及、Twitterは11,000リクエスト/秒 の高負荷で問題となっているらしい。 そしてスケーラビリティの鍵はDB分割だ、と言っている。Railsは基本一つのDBを見るのでスケーラビリティの問題になる （確かにWebサーバはロードバランサがあればいくらでもスケールするしね、Sessionの共有だけ気を付ければ） ↓ Dr Nic » Magic Multi-Connections: A “facility in Rails to talk to more than o
Magic Multi-Connections
→ Ruby on Rails → ActiveRecords WARNING Despite the 1.0.0 version number, various people have experienced problems using this tool. I haven’t yet found a solution (I haven’t really been looking though), so please subscribe to the forum or RubyForge news for any updates on a solution. What ActiveRecord models are allowed one connection to a database at a time, per class. Ruby on Rails sets up the d
Plugins - Will Paginate - Agile Web Development
WillPaginate Pagination is just limiting the number of records displayed. Why should you let it get in your way while developing, then? This plugin makes magic happen. Did you ever want to be able to do just this on a model: Post.paginate :page => 1, :order => 'created_at DESC' … and then render the page links with a single view helper? Well, now you can. Some resources to get you started: Your mi
err.the_blog.find_by_title('Memcaching Rails')
This is a little tune I’ve been humming a lot lately. It’s as handy as array.map(&:property). Really. You ever find yourself doing something like this? def change_state(object_id, new_state) object = find(object_id) object.state = new_state object.save object end Maybe not, but the pattern’s there: make an object, do something to the object, return the object. Rails’ returning method bundles this
techno weenie
For those of you that don’t stalk follow my other streams: Migration Buddy Or, “the inevitable renumbering and conflict-resolution of miggy tardust” This is a tool to help merge rails branches with conflicting migrations. The basic idea goes like this: First you migrate down to the migration you were at when you branched. Renumber any new migrations you created that conflict with any new migration
RubyForge: acts_as_shellable: Project Info
This mixin provides methods to make ActiveRecord::Base classes more usable from within a shell such as irb. This is done by providing a shorthand syntax for creating and querying tables with aliases for column names and associations. Development Status: 3 - Alpha Environment: Console (Text Based), Web Environment Intended Audience: Developers License: Ruby License Natural Language: English Oper
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