Class: ActiveRecord::Coders::YAMLColumn

Inherits:

Object

• Object
• ActiveRecord::Coders::YAMLColumn

show all

Defined in:

activerecord/lib/active_record/coders/yaml_column.rb

Constant Summary

RESCUE_ERRORS =

[ ArgumentError ]

Instance Attribute Summary (collapse)

• - (Object) object_class

  Returns the value of attribute object_class.

Instance Method Summary (collapse)

• - (Object) dump(obj)
• - (YAMLColumn) initialize(object_class = Object) constructor

  A new instance of YAMLColumn.

• - (Object) load(yaml)

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# File 'activerecord/lib/active_record/coders/yaml_column.rb', line 13

def initialize(object_class = Object)
  @object_class = object_class
end

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# File 'activerecord/lib/active_record/coders/yaml_column.rb', line 11

def object_class
  @object_class
end

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# File 'activerecord/lib/active_record/coders/yaml_column.rb', line 17

def dump(obj)
  YAML.dump obj
end

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# File 'activerecord/lib/active_record/coders/yaml_column.rb', line 21

def load(yaml)
  return object_class.new if object_class != Object && yaml.nil?
  return yaml unless yaml.is_a?(String) && yaml =~ /^---/
  begin
    obj = YAML.load(yaml)

    unless obj.is_a?(object_class) || obj.nil?
      raise SerializationTypeMismatch,
        "Attribute was supposed to be a #{object_class}, but was a #{obj.class}"
    end
    obj ||= object_class.new if object_class != Object

    obj
  rescue *RESCUE_ERRORS
    yaml
  end
end