Module: Versionable::ClassMethods

Defined in:
lib/versionable.rb

Instance Method Summary collapse

Instance Method Details

#new_version ⇒ Object

Sets the version of this assocation to the current time in integer form.



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# File 'lib/versionable.rb', line 33

def new_version
  # the expiry needs to be longer than any page that might use this as a
  # cache key.
  time = Time.now.to_i
  versionable_options[:cache].write(version_cache_key, time, :expires_in => versionable_options[:ttl])
  time
end

#object ⇒ Object

Returns the object that version applies to.



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# File 'lib/versionable.rb', line 55

def object
  if inside_association?
    proxy_owner
  else
    self
  end
end

#version ⇒ Object

Returns the current version of the assocation. Likely to be nil.



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# File 'lib/versionable.rb', line 28

def version
  versionable_options[:cache].read(version_cache_key)
end

#version_cache_key ⇒ Object

Returns the association version key.



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# File 'lib/versionable.rb', line 42

def version_cache_key
  parts =
    if object.class == Class
      [object]
    else
      [object.class, object.id]
    end
  
  parts << version_name
  parts * ':'
end

#version_name ⇒ Object

Returns the name portion of the version cache key



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# File 'lib/versionable.rb', line 64

def version_name
  if inside_association?
    "#{proxy_reflection.name}_version"
  else
    "version"
  end
end