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About this user

Jamie Wilkinson http://tramchase.com

2 total

On This Page:

  1. 1 ActiveRecord reconnect to database
  2. 2 acts_as_state_machine model

ActiveRecord reconnect to database

to ruby rails activerecord console ar merb orm reconnect by jamiew on May 02, 2008
// my Merb consoles drop the db connection after the mysql timeout; I'd rather not reload the whole environment

ActiveRecord::Base.connection.reconnect!

acts_as_state_machine model

to ruby rails activerecord state acts_as_state_machine by jamiew on Jan 09, 2008
// ActiveRecord plugin for managing state changes
// elitists.textdriven.com/svn/plugins/acts_as_state_machine/ 

class Something < ActiveRecord::Base

  # Validations
  validate :validate_state_change

  # State Machine States
  acts_as_state_machine :initial => :new
  state :new
  state :enabled,   :after => :after_enabled
  state :disabled,  :after => :after_disabled

  # State Machine Events
  event :enabled do
    transitions :from => :new,      :to => :enabled
    transitions :from => :disabled, :to => :enabled
  end
  
  event :disabled do
    transitions :from => :new,      :to => :disabled
    transitions :from => :enabled,  :to => :disabled
  end

  # Instance Methods
  def validate_state_change
    return if new_record?
    old = self.class.find(id)
    old_state = old.state
    new_state = self.state
    self.state = old_state
    if old_state != new_state
      begin
        if self.method("#{new_state}!").call != true
          errors.add(:state, "cannot transition from #{old_state} to #{new_state}")
        end
      rescue NameError
      end
      self.state = new_state
    end
  end
end
2 total

On This Page:

  1. 1 ActiveRecord reconnect to database
  2. 2 acts_as_state_machine model