Class: ActiveRecord::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/acts_as_pack_rat.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.acts_as_pack_rat ⇒ Object 



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# File 'lib/acts_as_pack_rat.rb', line 9

def acts_as_pack_rat

  class << self
    
    [:find, :count].each do |m|
      eval %{
        def #{m}(*args)
          # puts "acts_as_pack_rat: #{m}!"
          do_without_deleted {#{m}_with_deleted(*args)}
        end
      }
    end
    
    [:average, :minimum, :maximum, :sum].each do |m|
      eval %{
        def #{m}(column_name, options = {})
          # puts "acts_as_pack_rat: #{m}!"
          do_without_deleted {#{m}_with_deleted(column_name, options)}
        end
      }
    end
    
    def exists_with_deleted?(id_or_conditions)
      # puts "acts_as_pack_rat: exists_with_deleted?!"
      !find_with_deleted(:first, :select => "#{table_name}.#{primary_key}", :conditions => expand_id_conditions(id_or_conditions)).nil?
    rescue ActiveRecord::ActiveRecordError
      false
    end
  end
  
  alias_method :ar_destroy, :destroy
  
  class_eval do
    def destroy
      unless new_record?
        puts "acts_as_pack_rat: destroy"
        return false if callback(:before_destroy) == false
        if self.respond_to?(:status_id)
          self.status = Status.deleted
        else
          self.deleted_at = Time.now
        end
        result = self.send(:update_without_callbacks)
        callback(:after_destroy)
        # freeze
        return result
      end
    end
    
    def destroy!
      ar_destroy
    end
    
    def pack_rat?
      true
    end
  
  end
  
  protected
  def do_without_deleted(&block)
    if self.column_names.include?("status_id")
      with_scope({:find => { :conditions => ["#{table_name}.status_id != ?", Status.deleted.id] } }, :merge, &block)
    else
      with_scope({:find => { :conditions => ["#{table_name}.deleted_at IS NULL"] } }, :merge, &block)
    end
  end
  
end

Instance Method Details

#do_without_deleted(&block) ⇒ Object 



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# File 'lib/acts_as_pack_rat.rb', line 69

def do_without_deleted(&block)
  if self.column_names.include?("status_id")
    with_scope({:find => { :conditions => ["#{table_name}.status_id != ?", Status.deleted.id] } }, :merge, &block)
  else
    with_scope({:find => { :conditions => ["#{table_name}.deleted_at IS NULL"] } }, :merge, &block)
  end
end