Class: AuditedChangeSet::Change::Field

Inherits:
Object
  • Object
show all
Includes:
Hooks
Defined in:
lib/audited_change_set/change.rb

Constant Summary collapse

@@display_methods = 
%w[field_name name to_s]

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Hooks

#hooks, included

Constructor Details

#initialize(change_type, name, new_val, old_val = nil) ⇒ Field

Returns a new instance of Field.



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# File 'lib/audited_change_set/change.rb', line 40

def initialize(change_type, name, new_val, old_val=nil)
  @change_type = change_type
  @name = name.to_s
  @new_value, @old_value = [new_val, old_val].map {|val| transform_value(val) }
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/audited_change_set/change.rb', line 38

def name
  @name
end

#new_value ⇒ Object (readonly)

Returns the value of attribute new_value.



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# File 'lib/audited_change_set/change.rb', line 38

def new_value
  @new_value
end

#old_value ⇒ Object (readonly)

Returns the value of attribute old_value.



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# File 'lib/audited_change_set/change.rb', line 38

def old_value
  @old_value
end

Instance Method Details

#associated_value(val) ⇒ Object 



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# File 'lib/audited_change_set/change.rb', line 50

def associated_value(val)
  object = get_associated_object(val)
  object.send(display_method(object))
end

#association_class ⇒ Object 



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# File 'lib/audited_change_set/change.rb', line 55

def association_class
  @association_class ||= begin
    if reflection && class_name = reflection.options[:class_name]
      class_name.constantize
    else
      name.to_s =~ /(.*)_id$/
      $1.camelize.constantize
    end
  rescue Exception
    nil
  end
end

#get_associated_object(id) ⇒ Object 



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# File 'lib/audited_change_set/change.rb', line 73

def get_associated_object(id)
  hook(:get_associated_object, id) || association_class.find_by_id(id)
end

#name_without_id ⇒ Object 



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# File 'lib/audited_change_set/change.rb', line 77

def name_without_id
  name.chomp "_id"
end

#reflection ⇒ Object 



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# File 'lib/audited_change_set/change.rb', line 68

def reflection
  change_class = @change_type.constantize
  @reflection ||= change_class.reflect_on_association(name_without_id.to_sym) if change_class.respond_to?(:reflect_on_association)
end

#transform_value(val) ⇒ Object 



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# File 'lib/audited_change_set/change.rb', line 46

def transform_value(val)
  hook(:transform_value, val) || (association_class ? associated_value(val) : val.to_s)
end