Class: MR::FakeRecord::Attribute

Inherits:
Object
  • Object
show all
Defined in:
lib/mr/fake_record/attributes.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, type, options = nil) ⇒ Attribute

Returns a new instance of Attribute.



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# File 'lib/mr/fake_record/attributes.rb', line 106

def initialize(name, type, options = nil)
  options ||= {}
  @name = name.to_s
  @type = type.to_sym
  @primary = (@type == :primary_key)
  @null = options.key?(:null) ? !!options[:null] : true

  @reader_method_name  = @name
  @writer_method_name  = "#{@reader_method_name}="
  @was_method_name     = "#{@reader_method_name}_was"
  @changed_method_name = "#{@reader_method_name}_changed?"
end

Instance Attribute Details

#changed_method_name ⇒ Object (readonly)

Returns the value of attribute changed_method_name.



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# File 'lib/mr/fake_record/attributes.rb', line 101

def changed_method_name
  @changed_method_name
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/mr/fake_record/attributes.rb', line 99

def name
  @name
end

#null ⇒ Object (readonly)

ActiveRecord methods



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# File 'lib/mr/fake_record/attributes.rb', line 104

def null
  @null
end

#primary ⇒ Object (readonly)

ActiveRecord methods



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# File 'lib/mr/fake_record/attributes.rb', line 104

def primary
  @primary
end

#reader_method_name ⇒ Object (readonly)

Returns the value of attribute reader_method_name.



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# File 'lib/mr/fake_record/attributes.rb', line 100

def reader_method_name
  @reader_method_name
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/mr/fake_record/attributes.rb', line 99

def type
  @type
end

#was_method_name ⇒ Object (readonly)

Returns the value of attribute was_method_name.



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# File 'lib/mr/fake_record/attributes.rb', line 101

def was_method_name
  @was_method_name
end

#writer_method_name ⇒ Object (readonly)

Returns the value of attribute writer_method_name.



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# File 'lib/mr/fake_record/attributes.rb', line 100

def writer_method_name
  @writer_method_name
end

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'lib/mr/fake_record/attributes.rb', line 141

def <=>(other)
  self.name <=> other.name
end

#==(other) ⇒ Object 



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# File 'lib/mr/fake_record/attributes.rb', line 135

def ==(other)
  self.name == other.name &&
  self.type == other.type &&
  self.null == other.null
end

#changed?(record) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mr/fake_record/attributes.rb', line 131

def changed?(record)
  read(record) != was(record)
end

#define_on(record_class) ⇒ Object 



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# File 'lib/mr/fake_record/attributes.rb', line 145

def define_on(record_class)
  attribute = self
  record_class.class_eval do

    attr_accessor attribute.reader_method_name
    define_method(attribute.was_method_name) do
      attribute.was(self)
    end
    define_method(attribute.changed_method_name) do
      attribute.changed?(self)
    end

  end
end

#read(record) ⇒ Object 



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# File 'lib/mr/fake_record/attributes.rb', line 119

def read(record)
  record.send(@reader_method_name)
end

#was(record) ⇒ Object 



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# File 'lib/mr/fake_record/attributes.rb', line 127

def was(record)
  record.saved_attributes[@name]
end

#write(value, record) ⇒ Object 



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# File 'lib/mr/fake_record/attributes.rb', line 123

def write(value, record)
  record.send(@writer_method_name, value)
end