PreferenceFu Plugin
Gives you the ability to easily add large numbers of boolean attributes to your models without the need for more than one migration. Allows you to easily setup a basic ACL or user preferences.
Blog: http://www.brennandunn.com/2008/3/24/preferencefu
Github: http://github.com/brennandunn/preference_fu/tree/master
SMS Fu Plugin
This plugin allows you to send an SMS (text
message) to any cellphone, provided the phone
number and the carrier.
Read more…
Blog Post : http://brendanlim.com/2008/2/28/send-text-messages-from-rails-with-sms-fu
SVN : http://sms-fu.googlecode.com/svn/trunk/sms_fu
Github: http://github.com/brendanlim/sms-fu/
IsSearchable Plugin
This adds highly customizable search functionality to your models. Easily set up a custom query-based search for each model and create custom attribute filters for your search. Read more…
SVN : http://svn.behindlogic.com/public/rails/plugins/is_searchable/
EmailVeracity Plugin
This adds a validation function that you can use in models that have email attributes. It will validate email addresses three ways:
- Checks that the email address is well-formed
- Checks that the domain name in the email address has a DNS entry
- Checks that the DNS entry for the domain has an MX record
Blog Post : http://rails.savvica.com/2007/11/6/email-veracity-plugin
SVN : http://svn.savvica.com/public/plugins/validates_email_veracity_of/
Validates Constancy
This Rails plugin allows you to prevent particular database fields from being changed after a record is created. A validation error occurs on updates if an attribute of a model object is different from its value in the database.
HomePage : http://constancy.rubyforge.org/
SVN : http://constancy.rubyforge.org/svn/plugin/validates_constancy
Acts As Preferenced
acts_as_preferenced is an easy to use preference system for your application. Preferences can be key/value pairs or model associated preferences
(ex. User 4 has preference X for Thing 42) and even supports assoicated class preferences such as Employee 4 has preference ‘ignore’ on UserNotifier. Full test coverage included.
HomePage : http://webwideconsulting.com/plugins/acts_as_preferenced/
http://svn.webwideconsulting.com/plugins/
SVN : http://webwideconsulting.com/plugins/acts_as_preferenced/
Validate Attributes
validate_attributes is a really simple plugin to validate specific attributes of a model unlike the method valid? which collectively validates all the attributes. This plugin provides the functionality of validating specific attribute(s) and skipping others’ validations and vice versa.
HomePage : http://expressica.com/plugins/validate_attributes
SVN : svn://vinsol.com/plugins/sur/validate_attributes
Post a comment : click here
SimplyPresentable
Save keystrokes and stay DRY with SimplyPresentable:
< present!(foo).form do |f| >
<= f.text_field :bar >
< end >Instead of
<% form_for(
foo.new_record? ? {
:url => 'http://example.com/foos',
:html => { :method => 'post', :id => 'new_foo', :class => 'new_foo' }
} :
{
:url => "http://example.com/foos/#{foo.id}",
:html => { :method => 'put', :id => 'foo_1', :class => 'foo' }
} :
) do |f| %>
<= f.text_field :bar >
< end >SimplyPresentable is a plugin for that introduces the idea of presenters to rails
HomePage : http://simply_presentable.richcollins.net/
SVN : svn://richcollins.net/svn/simply_presentable
script/plugin install svn://richcollins.net/svn/simply_presentable
SimplyPresentable is fully tested as verified by rcov and heckle.
before_assignment?
- Adds support for a before_assignment callback to belongs_to relationships. Allows validation of the object being assigned to the relationship at the time of assignment, instead of having to depend on validations or before_save callbacks on the parent object.
- Complements the :conditions option of belongs_to
class Approvable < ActiveRecord::Base
belongs_to :approver,
:class_name => 'User',
:foreign_key => 'approver_id',
:conditions => ['authorized_approver = ?', true],
:extend => CheckApproverExtension
end
module CheckApproverExtension
def before_assignment(approver)
raise UnauthorizedApproverException unless approver.authorized_approver
end
end
svn:http://obiefernandez.com/svn/plugins/before_assignment
Simple Captcha
Simple Captcha provides the captcha authentication functionality in raubyonrails application. Its really simple to implement and it provides the multiple image styles to be displayed.
homepage:
http://expressica.com/2007/02/06/simple-captcha-released-the-captcha-for-rails-applications/
svn:
svn://rubyforge.org/var/svn/expressica/plugins/simple_captcha
acts_as_classifiable
- Adds a Bayesian Classifier support to your models.
create_table :classifier_models, :force => true do |t|
t.column :identifier, :int
t.column :classifiable_type, :string, :null => false
t.column :data, :blob
end
class Comment < ActiveRecords::Base
acts_as_classifiable :fields => ["text"], :categories => ["Spam", "Legit"]
end
@comment.train :legit
@comment.classify
description: http://cuttingtheredtape.blogspot.com/2006/05/actsasclassifiable.html
ActsAsNestedSet enhancement: BetterNestedSet
- Provides more methods and simpler usage than acts_as_nested_set, useful for threaded discussion boards, hierarchical navigation, etc…
acts_as_slugable
- Generates URL slugs (permalinks) based on a specified field
For example, generate a URL slug based on the title of a Page record and store it in url_slug. Slug will be unique within the parent_id.
class Page < ActiveRecord::Base
acts_as_slugable :source_column => :title, :target_column => :url_slug, :scope => :parent
end
- Description: http://multi-up.ca/code/
- SVN: http://multi-up.ca/code/acts_as_slugable/
Whiny Finder Plugin
- Adds find! and find_by_COLUMN_NAME! to ActiveRecord objects.
- These methods will raise ActiveRecord::RecordNotFound instead of an empty array if no results were returned by the query.
- Great for CRUD controllers, for example:
admin_controller.rb
def reset_password
@user = User.find_by_login!(params[:id])
@user.password = "changeme"
@user.save
flash[:notice] = "#{@user.login}'s password was reset!"
rescue ActiveRecord::RecordNotFound
flash[:error] = "Could not reset user's password, unknown user."
ensure
redirect_to :action => 'index'
end
svn: http://soen.ca/svn/projects/rails/plugins/whiny_finder/trunk
sluggable_finder
A mix of acts_as_slugable and whiny_finder.- Normalizes selected field for use in URL’s
- Encodes non-english characters properly!
- Creates unique encoded “permalinks”
- Supports scoped unique permalinks
- Raises RecordNotFound if not found, for use with rescue_action_in_public en controllers.
Installation:
script/plugin install http://code.estadobeta.com/plugins/sluggable_finder/
Simple to use.
Association Scope Plugin
- Allows scoping of association definitions
- Makes code more DRY.
- Works with belongs_to, has_one, has_many, has_and_belongs_to_many
post.rb
class Post < ActiveRecord::Base
with_association_scope :order => "created_at DESC", :dependent => :delete_all do
# Both of these are ordered by created_at
has_many :posts
has_many :comments
# And yes we can override default behaviour
has_many :milestones, :order => "priority"
end
# Don't use created_at for this one
has_many :projects
end
svn: http://soen.ca/svn/projects/rails/plugins/association_scope/trunk 404
Acts as Voteable Plugin
- Quickly mix reddit/digg style voting into any model
- Fully tested
Improve the image quality and allow the random string images in the validates_captcha plugin
- Here are the tips to improve the quality of image:
http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/
Acts As Rateable Plugin
- Allows for any model to be rated/ranked.
RubyForge Project Page: http://rateableplugin.rubyforge.org/
svn: svn://rubyforge.org/var/svn/rateableplugin/trunk
Another Acts As Rateable Plugin
Just another one with the same functionality:
http://www.juixe.com/techknow/index.php/2006/07/05/acts-as-rateable-plugin/
acts_as_rated
Another rating plugin with a lot of customization options and the ability to cache total, count and average ratings per object, without the need to do count and avg calls on the ratings table.
Homepage: http://acts_as_rated.rubyforge.org
Repository: svn://rubyforge.org/var/svn/acts-as-rated/trunk/acts_as_rated
Acts As Taggable Plugin
- Adds tagging or folksonomy support to any model.
be_taggable Plugin
- Weights in at 67 lines, this plugin is 1/10th the size of acts_as_taggable gem (2.0.2).
- Tag any models you want, no need to create additional join table.
- Built in tags_cache column to reduce DB traffic.
- Simple installation, run 3 commands and you‘re ready to tag and roll.
Acts As Toucher Plugin
- an easy way in Rails to have your User model (or any other for that matter) explicitly record a certain type of access occurence on another model (kind of like unix’ touch(1) for files)
homepage:
http://www.crowdedweb.com/articles/2006/08/21/acts_as_toucher-ruby-on-rails-plugin
Acts As Priceable Plugin
- Associate prices to any model, includes multiple currency support.
homepage: http://orya.co.uk/articles/2006/04/10/acts_as_priceable-rails-plugin-its-here 404
state_select Plugin
- This plugin allows to create drop down list for states, same as country_select method in rails.
Curently it can generate state list for India, US, Canada, Australia and Spain(default is US).
Usage:
- state_select(object, method, country=’US’, options = {}, html_options = {})
homepage: http://webonrails.com/2006/09/12/plugin-state_select-generate-drop-down-selection-box-for-states/
Acts As Commentable Plugin
- Allows for comments to be added to any model.
homepage: http://www.juixe.com/techknow/index.php/2006/06/18/acts-as-commentable-plugin/
Acts As State Machine Plugin
- Adds state machine functionality to any model.
http://lunchroom.lunchboxsoftware.com/articles/2006/01/21/acts-as-state-machine
Acts As Attachment Plugin
- Allows you to specify that a model accepts file uploads and stores the necessary meta info (filename, size, etc).
- Still under development
homepage: http://technoweenie.stikipad.com/plugins/show/Acts+as+Attachment
svn: http://svn.techno-weenie.net/projects/plugins/acts_as_attachment/
Acts As Dropdown Plugin
- Allows a model to easily create a dropdown list in conjunction with the select form helper.
svn: svn://delynnberry.com/code/plugins/acts_as_dropdown/trunk
Acts As Blog
- Here is a new plugin that allows you to easily switch between BlueCloth,RedCloth, and SmartyPants for your markup. It will also allow you to filter out html tags that weren’t created with the markup syntax.
Acts As Popular
- Manages popularity updates between models. Useful in situations where the “popularity” of an item influences the popularity of items from other models.
- May need more testing
Dollars And Cents
- Store prices as database-portable integers in your database, but access them transparently as floats.
Update has_and_belongs_to_many Attributes
- Lets you update custom attributes in has_and_belongs_to_many relationship tables.
Download: http://phpmywebmin.josh.ch/_uploads/j0sh/update_habtm_attributes_plugin.zip
File Column Plugin
- Makes file and image uploads really easy. Support for RMagick.
svn: http://opensvn.csie.org/rails_file_column/plugins/file_column/trunk
Active Form
- Provides support for non-ActiveRecord Model Objects that support Validations.
homepage: http://www.realityforge.org/articles/2005/12/02/validations-for-non-activerecord-model-objects
svn: http://www.realityforge.org/svn/code/active-form/trunk/
Acts As Enumerated Plugin
svn: http://svn.protocool.com/public/plugins/enumerations_mixin/
Acts As Bitfield Plugin
homepage: http://gabriel.gironda.org/articles/2005/12/08/bitfields-in-activerecord
Acts As Gmail Account
- Allows the model to validate using Gmail accounts.
Acts As Urlnameable Plugin
- Intended to be a successor or alternative to acts_as_permalink. Allows you to give your ActiveRecord objects nice url names, for use in permalinks and such.
homepage: http://gabriel.gironda.org/articles/2006/03/09/acts_as_urlnameable-released
Acts As Paranoid Plugin
- Make your Active Records “paranoid.?? Deleting them does not delete the row, but set a deleted_at field. Find is overloaded to skip deleted records.
homepage: http://ar-paranoid.rubyforge.org/
Acts As Threaded Plugin
- Lets you create a multi-root nested_set database model. Great for threaded forums and tree structures where grabbing the ordered tree in one query is important.
homepage: http://www.railtie.net/articles/2006/02/05/rails-acts_as_threaded-plugin
Acts As Versioned Plugin
- Saves older versions of a table entry in another table. This enables rollback and other useful functions (for a Wiki for instance).
homepage: http://ar-versioned.rubyforge.org/
svn: http://svn.techno-weenie.net/projects/plugins/acts_as_versioned/
Acts as Formatted Plugin?
- Automatically formats string columns in ActiveRecord objects.
- homepage: http://rubyforge.org/projects/actsasformatted/
- install: script/plugin install svn://rubyforge.org/var/svn/actsasformatted
Acts As Deque Plugin
- Make your models behave as a stack, queue, or dequeue.
homepage: http://ar-deque.rubyforge.org/
svn: http://svn.dpiddy.net/plugins/acts_as_deque/
Acts As Auction Plugin
- acts_as_auction will make your model behave like an eBay auction, automatically handling item specific data and updating on demand (in development, please comment if interested).
homepage:
http://adamjroth.com/articles/2006/07/23/rails-plugin-acts_as_auction 404
Acts As Shellable Plugin
- An acts-as mixin providing aliases and shorthand sql generation to make ActiveRecord objects more usable in a shell ie irb.
homepage: http://www.chwhat.com/projects/shellable
Acts As Activated Plugin
- A plugin based directly on Acts As Paranoid Plugin but essentially provides the opposite functionality. It adds scoping (hides) model existance until the model has been set as active.
svn: http://svn.webwideconsulting.com/svn/acts_as_activated/
Acts As Favorite Plugin
- This plugin provides a quick and easy way for you to add a “favorites” feature to you application. All you need is an existing User model, and some other models that your users would like to mark as favorites.
Custom XML Serialization
Customize the XML serialization of your model objects. The following code:
class Widget < ActiveRecord
belongs_to :factory
has_many :sprockets
xml_serialize [ :name, { :factory => [ :name, "factory" ] } ]
xml_serialization_options :factory, :cdata => true
xml_serialization_options :sprockets, :name=> 'components'
end
Widget.find(:first).to_xmlwill produce:
<widget>
<name>Hydromatic Conflagulator</name>
<factory><![CDATA[John's Factory o' Conflagulation]]></factory>
<components>
<sprocket>
<name>Whatchamacallit</name>
<amount>17</amount>
</sprocket>
</components>
</widget>
installation:
svn co http://custom-xml-serialization.googlecode.com/svn/branches/1.0 vendor/plugins/custom_xml_serialization
Uses Guid Plugin
- Makes the “ID?? field into a 22 character URL-safe GUID.
homepage: http://tools.assembla.com/breakout/wiki/FreeSoftware
svn: http://tools.assembla.com/svn/breakout/breakout/vendor/plugins/guid
Enforce Column Limits Plugin
- Provides a convenient way to validate all your model’s string attributes against their maximum limits.
Annotate Models
- Add a comment summarizing the current schema to the top
of each ActiveRecord model source file.
OpenLaszlo Plugin
- Integrates Rails server and OpenLaszlo client applications.
homepage: http://laszlo-plugin.rubyforge.org/
Userstamp Plugin
- Adds support for automatically tagging your object’s created_by and updated_by attributes with the currently logged in user.
Spatial Adapter
- Provides transparent support for PostGIS and MySQL Spatial geometric columns in Rails.
homepage:
http://thepochisuperstarmegashow.com/projects/#spatialadapter
svn (works for both MySql and PostGIS) :
svn://rubyforge.org/var/svn/georuby/SpatialAdapter/trunk/spatial_adapter
Validator Plugin
homepage: http://rubyforge.org/projects/validator/
Validates_URL
- Yet another HTTP URL validator. You’d want to use this one if you wanted tighter control over the error messages or valid response codes. Unlike HTTP URL Validation Improved, however, does not support domain validation.
svn co http://validates-url.googlecode.com/svn/branches/1.0 vendor/plugins/validates_url
HTTP URL Validation Improved
- Improved version of the one below. Supports multiple responses such as Net::HTTPMovedPermanently and Net::HTTPMethodNotAllowed. Will be adding more features from here as time goes on.
svn co https://modzer0.cs.uaf.edu/repos/hank/code/http_url_validation_improved
./script/plugin install -x https://modzer0.cs.uaf.edu/repos/hank/code/http_url_validation_improved
HTTP URL Validation Plugin
- Allows the model to validate if a user-entered URL can be reached by an HTTP request.
homepage: http://www.ccjr.name/blog/2006/01/25/http-url-validator
Valid XML
- Uses REXML::Document to validate well-formed XML.
homepage: http://www.johnwulff.com/articles/2006/10/03/xml-validation-plugin
validates_unlike plugin
- Allow to validates that the value of the specified attribute doesn’t match against the regular expression provided.
homepage: http://www.lacaraoscura.com/2006/07/11/validates-unlike-plugin/
Enhanced ActiveRecord Errors
- Allows full customization of the errors generated using ActiveRecords error_messages_for method
homepage:
http://railtie.net/articles/2006/01/26/enhancing_rails_errors
Validates Numericality Of
- Extends the validates_numericality_of validation by adding :gt, :gte:, :lt, :lte, :eq, :even, :odd conditions
homepage:
http://www.railtie.net/articles/2006/01/27/defining-numericality
Custom Error Message
- Active Record validation enhancement. Gives you the option to not have your custom validation error message prefixed with the attribute name.
Auto Escape Plugin
- Automatically escapes text from model attributes containing text. Provides an ‘acts_as_raw :column’ to override this behavior.
svn:
svn://rubyforge.org//var/svn/autoescape
CAPTCHA Validation Plugin
- Validate models against a CAPTCHA challenge (image with funny looking text :-).
svn: http://svn.2750flesk.com/plugins/trunk/validates_captcha
Acts as HABTM List
- acts_as_habtm_list is a Ruby on Rails plugin, that can manage ordered lists through a join-table. It is providing almost the same Api as acts_as_list.
svn: http://svn.inlet-media.de/svn/rails_extensions/plugins/acts_as_habtm_list
Riff Plugin
- Detect differences between two activerecords.
ForceUppercase Plugin
- ForceUppercase is a plugin that provides the capabilities to automagically convert all ActiveRecord column objects of type :string or :text to their uppercase (upcase) version, as long as they have content (nil values will remain nil).
svn: svn://rubyforge.org//var/svn/force-uppercase
Acts as Ordered
- Allows you to access the adjacent models in a given order. Adds next and previous accessors to model instances.
readme: http://svn.viney.net.nz/things/rails/plugins/acts_as_ordered/README
svn: http://svn.viney.net.nz/things/rails/plugins/acts_as_ordered
Validates Date Time
- Adds two validators to validate dates and times entered as strings: validates_date and validates_time.
readme: http://svn.viney.net.nz/things/rails/plugins/validates_date_time/README
svn: http://svn.viney.net.nz/things/rails/plugins/validates_date_time
Validates Elfproef
- Validates fields against the Elfproef, a checksum used for Dutch bank accounts.
download:
http://www.spacebabies.nl/elfproef/
validates_email_format_of
Validate email addresses against RFC 2822.
Takes the same options as validates_format_of
class Person < ActiveRecord::Base validates_email_format_of :email end
Description: http://multi-up.ca/code/
README: http://code.dunae.ca/validates_email_format_of/README
Validates As Email
- Validates dates against a regular expression that supposedly represents the syntax of RFC822 email addresses.
readme:
https://svn.greenpeace.org/repositories/rails_plugins/validates_as_email/tags/0.1.4/README
svn:
https://svn.greenpeace.org/repositories/rails_plugins/validates_as_email/tags/0.1.4
SQL Decimal Support
- Adds support for SQL decimal/numeric types as BigDecimal classes, and adds support for the :decimal type in migrations
tarball: http://www.ashleymoran.me.uk/sql_decimal_support.tgz
Pessimistic Locking Plugin
svn: http://projects.netlab.jp/svn/rails_plugins/pessimistic_locking
HABTM Create Fix
- Temporary bugfix for HasAndBelongsToManyAssociation#create. Corrects bug where create didn’t populate the join table. Useful only if you aren’t on the latest Rails trunk, and will be obsolete as of the released version after Rails 1.1.2.
svn: http://svn.hasmanythrough.com/public/plugins/habtm_create/
Allow HABTM Primary Key Plugin
- Allows for primary keys named id in join tables (fixes bug 1031)
svn: svn://suven.no-ip.org/rails/plugins/allow_habtm_primary_key
file: http://suven.no-ip.org/allow_habtm_primary_key.tar.gz
ModelFormatter
- Format data coming in and out of the model easily with these class methods. example:
format_column :sale_price, :as => :currency
- Can use blocks, custom formatters, or even help out by contributing to the pluggable formatting code…
svn: https://hattenschwetter.com/svn/hattenschwetter/rails_plugins/model_formatter/trunk
Nested Transactions
- This plugin enables nested transactions in ActiveRecord via SAVEPOINTs, where they are availlable. For supported databases and other info check project page.
svn: svn://rubyforge.org/var/svn/arnesttransacts/trunk
Validates Multiparameter Assignments
- A plugin that adds “validates_multiparameter_assignments” method, which turns ActiveRecord::MultiparameterAssignmentErrors into errors added to the model.
file: http://www.kbmj.com/users/shinya/rails/validates_multiparameter_assignments-1.0.zip
multiparameter_arrays?
- A plugi that allows for arrays of multiperameter to be sent to ActiveRecord
bq. svn: http://svn.shiftnetwork.com/plugins/multiparameter_arrays
bq. svn: http://svn.shiftnetwork.com/plugins/multiparameter_arrays
Foreign Key Schema Dumper Plugin
- A plugin that allows for foreign key creation and dumping to schema.rb. Supports Oracle, MySQL, and Postgres.
svn: svn://caboo.se/plugins/atmos/activerecord_foreign_key_extensions
Validation Reflection
- Reflective access to validations
- “Declarative” methods for defining validations based on database metadata
- Reflects validation information into the class attributes of HTML elements generated from rhtml templates.
Asynchronous Method Calls?
- Any method in your models can now be queued up in a table. Thought this was a cool way to immediately make current code people have asynchronous without introducing a ton of other stuff. And running a queue from a table rather than launching new threads still seems like a safer route these days? Here’s an example:
class TestRecord < ActiveRecord::Base
after_save :an_alert
def an_alert
logger.info "We could now asynchronously send an email to tons of people with this alert."
end
asynchronous :an_alert
end
svn: http://asynchronous.googlecode.com/svn/trunk/asynchronous/
homepage: http://code.inklingmarkets.com/asynchronous-rails-plugin/
Acts as Most Popular
- This plugin retrieves the most frequently occurring values for each column. It adds methods of the form most_popular_[pluralized_column_name].
svn: http://shanesbrain.net/svn/rails/plugins/acts_as_most_popular
Acts As Textiled
- This simple plugin allows you to forget about constantly rendering Textile in your application. Instead, you can rest easy knowing the Textile fields you want to display as HTML will always be displayed as HTML (unless you tell your code otherwise).
homepage: http://errtheblog.com/post/14
svn: svn://errtheblog.com/svn/plugins/acts_as_textiled
Acts As Cached
- A plugin which allows you to cache any Ruby object with memcached.
homepage: http://errtheblog.com/post/27
svn: svn://errtheblog.com/svn/plugins/acts_as_cached
Acts As Configurable
- I wanted to add the ability to have config settings for a site. I also needed some settings for a user, and a group, and… you get the picture. I didn’t want to keep adding has_something associations (has_one :profile, has_one :set_of_vital_stats) and I didn’t want to keep mucking into the model db structure for everything. Well, I figured that everything could have it’s own settings. But then, why stop there. Maybe a user should have settings in relation only to a single group and another set for another group, or a post, or whatever.
homepage: http://svn.nkryptic.com
Acts As Bytefield
- We needed a convenient way to store a series of values in a single field but a bitfield would not do because that would only allow a value of 1 or 0 for each field, and I wanted to be able to store at least 3 values for each field.
- It allows storage of 256 values in each field, or 256 discrete values ranging from 0-255 (unsigned char or byte) for each value in a MySQL varchar(255) field.
homepage: http://blog.cbciweb.com/articles/2007/04/23/acts-as-bytefield-activerecord-bytefield-plugin
has_many_polymorphs
- Powerful single and bi-directional extensible polymorphic associations.
selection_options_for
Manages hard-coded selection lists.Allows you to
- keep the display labels in the model
- store a 1 character flag in the DB
- test the value with methods in the code
svn: http://railsstudio.com/svn/pub/plugins/selection_options_for/trunk/selection_options_for
Acts As Disjoint Set
Puts objects (rows) into a disjoint set data structure, which allows the efficient (constant amortised time) merging of rows into disjoint sets. Use this plugin if you have a large number of rows, and you want to group them into sets by a series of merges.
svn:
svn://rubyforge.org/var/svn/actsdisjoint/plugins/acts_as_disjoint/trunk
acts_as_shareable
Rails plugin to allow sharing of one model object to another (share ‘rails cookbook’ to the ‘rails reading group’). Adds a number of methods to help find the objects that are shared, etc.
svn:svn://rubyforge.org/var/svn/actsasshareable
seo_urls
Overwrites to_param to append a url-friendly version of the model’s ‘name’ or ‘title’ attribute to it’s id. Useful for increasing search engine visibility of nested pages in your site.
SVN : http://svn.redshiftmedia.com/svn/plugins/
acts_as_taskable
Acts as Taskable is a Rails plugin that allows any ActiveRecord class to automatically accept tasks
svn:http://acts-as-taskable.googlecode.com/svn/trunk/acts_as_taskable
Acts As Resource
ActsAsResource combines ActiveRecord and ActiveResource features in one class.
slugger
With Slugger you can use a field(s) of the model as a slug (URL friendly version of the record). So instead of controller/id you can use controller/slug (http://example.com/posts/1 => http://example.com/posts/my-post-title)