Class: Locomotive::Steam::Adapters::Memory::Order

Inherits:
Object
  • Object
show all
Defined in:
lib/locomotive/steam/adapters/memory/order.rb

Defined Under Namespace

Classes: Asc, Desc, Direction

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*spec) ⇒ Order

Returns a new instance of Order.



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# File 'lib/locomotive/steam/adapters/memory/order.rb', line 9

def initialize(*spec)
  @list = []
  spec.compact.each do |criterion|
    @list += (case criterion
    when Array  then criterion
    when Hash   then criterion.to_a
    when String then criterion.split(',').collect { |s| build(s.strip) }
    else []
    end)
  end
end

Instance Attribute Details

#list ⇒ Object (readonly)

Returns the value of attribute list.



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# File 'lib/locomotive/steam/adapters/memory/order.rb', line 7

def list
  @list
end

Instance Method Details

#apply_to(entry, locale) ⇒ Object 



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# File 'lib/locomotive/steam/adapters/memory/order.rb', line 25

def apply_to(entry, locale)
  @list.collect do |(name, direction)|
    value = entry.send(name)

    if value.respond_to?(:translations) # localized
      value = value[locale]
    end

    asc?(direction) ? Asc.new(value) : Desc.new(value)
  end
end

#asc?(direction) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/locomotive/steam/adapters/memory/order.rb', line 37

def asc?(direction)
  direction.nil? || direction.to_sym == :asc
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/locomotive/steam/adapters/memory/order.rb', line 21

def empty?
  @list.empty?
end