Class: Enumeration

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
app/models/enumeration.rb

Overview

redMine - project management software Copyright © 2006 Jean-Philippe Lang

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.default ⇒ Object 



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# File 'app/models/enumeration.rb', line 36

def self.default
  # Creates a fake default scope so Enumeration.default will check
  # it's type.  STI subclasses will automatically add their own
  # types to the finder.
  if self.descends_from_active_record?
    find(:first, :conditions => { :is_default => true, :type => 'Enumeration' })
  else
    # STI classes are
    find(:first, :conditions => { :is_default => true })
  end
end

.get_subclasses ⇒ Object

Returns the Subclasses of Enumeration. Each Subclass needs to be required in development mode.

Note: subclasses is protected in ActiveRecord



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# File 'app/models/enumeration.rb', line 94

def self.get_subclasses
  @@subclasses[Enumeration]
end

.overridding_change?(new, previous) ⇒ Boolean

Does the new Hash override the previous Enumeration?

Returns:

  • (Boolean) 


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# File 'app/models/enumeration.rb', line 99

def self.overridding_change?(new, previous)
  if (same_active_state?(new['active'], previous.active)) && same_custom_values?(new,previous)
    return false
  else
    return true
  end
end

.same_active_state?(new, previous) ⇒ Boolean

Are the new and previous fields equal?

Returns:

  • (Boolean) 


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# File 'app/models/enumeration.rb', line 119

def self.same_active_state?(new, previous)
  new = (new == "1" ? true : false)
  return new == previous
end

.same_custom_values?(new, previous) ⇒ Boolean

Does the new Hash have the same custom values as the previous Enumeration?

Returns:

  • (Boolean) 


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# File 'app/models/enumeration.rb', line 108

def self.same_custom_values?(new, previous)
  previous.custom_field_values.each do |custom_value|
    if custom_value.value != new["custom_field_values"][custom_value.custom_field_id.to_s]
      return false
    end
  end

  return true
end

Instance Method Details

#<=>(enumeration) ⇒ Object 



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# File 'app/models/enumeration.rb', line 84

def <=>(enumeration)
  position <=> enumeration.position
end

#before_save ⇒ Object 



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# File 'app/models/enumeration.rb', line 53

def before_save
  if is_default? && is_default_changed?
    Enumeration.update_all("is_default = #{connection.quoted_false}", {:type => type})
  end
end

#destroy(reassign_to = nil) ⇒ Object

Destroy the enumeration If a enumeration is specified, objects are reassigned



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# File 'app/models/enumeration.rb', line 77

def destroy(reassign_to = nil)
  if reassign_to && reassign_to.is_a?(Enumeration)
    self.transfer_relations(reassign_to)
  end
  destroy_without_reassign
end

#destroy_without_reassign ⇒ Object 



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# File 'app/models/enumeration.rb', line 73

alias :destroy_without_reassign :destroy

#in_use? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/enumeration.rb', line 64

def in_use?
  self.objects_count != 0
end

#is_override? ⇒ Boolean

Is this enumeration overiding a system level enumeration?

Returns:

  • (Boolean) 


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# File 'app/models/enumeration.rb', line 69

def is_override?
  !self.parent.nil?
end

#objects_count ⇒ Object

Overloaded on concrete classes



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# File 'app/models/enumeration.rb', line 60

def objects_count
  0
end

#option_name ⇒ Object

Overloaded on concrete classes



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# File 'app/models/enumeration.rb', line 49

def option_name
  nil
end

#to_s ⇒ Object 



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# File 'app/models/enumeration.rb', line 88

def to_s; name end