Padlock

Lock a content item for editing.

Installation

Add this line to your application's Gemfile:

gem 'padlock'

And then execute:

$ bundle

Generate the padlocks table with the included Rails generator:

$ rails generate padlock:install
$ rake db:migrate

Usage

User:

Padlock will associate every lock to a User object. Therefore, you need to specify the User type model:

class User < ActiveRecord::Base
  acts_as_padlock_user
end

Optionally set the foreign key:

class User < ActiveRecord::Base
  acts_as_padlock_user foreign_key: "admin_id"
end

Once activated a User object can have many lockable objects

Locking:

All lockable objects are associated to a padlock user.

current_user.padlock(lockable)  # => Lock the object for editing by the current_user. Override an existing lock
current_user.padlock!(lockable) # => Lock the object and raise an exception if lockable is already locked by another user

You can also pass in multiple lockable objects to a single user.

current_user.padlock(lockable_1 [, lockable_2, ...])

Or check the status of a single object.

current_user.locked?(lockable) # => true/false

For integration with the Timeout gem, you can touch a lockable object and extend the padlock's TTL.

currrent_user.touch(lockable_1 [, lockable, ...])

Padlocks can also be administered through the global Padlock object

Padlock.lock(current_user, lockable [, lockable, ...]) # => locks it to the user
Padlock.locked?(lockable)                              # => true/false
Padlock.unlock!(lockable_1 [, lockable_2, ...])        # => unlocks a group of objects
Padlock.unlocked?(lockable)                            # => true/false

Lockable Objects:

Padlock assumes that all objects inherited from ActiveRecord::Base can be locked by a user record.

lockable.locked?   # => true/false
lockable.unlocked? # => true/false
lockable.locked_by # => associated padlock user record
lockable.lock_touched_at # => last time the padlock was updated
lockable.unlock!   # => unsets the padlock

Stale Padlocks

Lockables that have been locked for extended periods of time, may need to be reset. In this case you can detect stale locks and unset them.

Padlock.unlock_stale # => unlocks all padlocks that have not been touched in the last 24 hours

Configuration and Initialization

You can customize certain configuration options by added an initializer (config/padlock.rb) or pre-boot configuration file:

Padlock.config.timeout = 1.week         # => sets a new unlock stale timeout.  Default is 24 hours.
Padlock.config.table_name = "..."       # => define the database table name for the padlocks.  Default is "padlocks"
Padlock.config.user_foreign_key = "..." # => defines the foreign key relating to the User object.  Default is "user_id".
Padlock.config.user_class_name = "..."  # => defines the user model class.  Default is "User".

Credits

Authored by Adam Cuppy (@acuppy) of Coding ZEAL (http://codingzeal.com)

This is freely distributed under the MIT license. Use it, modify it, enjoy :)

Contributing

Fork it
Create your feature branch (git checkout -b my-new-feature)
Commit your changes (git commit -am 'Add some feature')
Push to the branch (git push origin my-new-feature)
Create new Pull Request