Class: Liquid::StandardFilters::InputIterator

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/liquid/standardfilters.rb

Instance Method Summary collapse

Constructor Details

#initialize(input) ⇒ InputIterator

Returns a new instance of InputIterator.



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# File 'lib/liquid/standardfilters.rb', line 421

def initialize(input)
  @input = if input.is_a?(Array)
    input.flatten
  elsif input.is_a?(Hash)
    [input]
  elsif input.is_a?(Enumerable)
    input
  else
    Array(input)
  end
end

Instance Method Details

#compact ⇒ Object 



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# File 'lib/liquid/standardfilters.rb', line 449

def compact
  to_a.compact
end

#concat(args) ⇒ Object 



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# File 'lib/liquid/standardfilters.rb', line 437

def concat(args)
  to_a.concat(args)
end

#each ⇒ Object 



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# File 'lib/liquid/standardfilters.rb', line 458

def each
  @input.each do |e|
    yield(e.respond_to?(:to_liquid) ? e.to_liquid : e)
  end
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/liquid/standardfilters.rb', line 453

def empty?
  @input.each { return false }
  true
end

#join(glue) ⇒ Object 



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# File 'lib/liquid/standardfilters.rb', line 433

def join(glue)
  to_a.join(glue.to_s)
end

#reverse ⇒ Object 



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# File 'lib/liquid/standardfilters.rb', line 441

def reverse
  reverse_each.to_a
end

#uniq(&block) ⇒ Object 



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# File 'lib/liquid/standardfilters.rb', line 445

def uniq(&block)
  to_a.uniq(&block)
end

#where(property, target_value) ⇒ Object 



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# File 'lib/liquid/standardfilters.rb', line 464

def where(property, target_value)
  select do |item|
    item[property] == target_value
  end
rescue TypeError
  # Cannot index with the given property type (eg. indexing integers with strings
  # which are only allowed to be indexed by other integers).
  raise ArgumentError.new("cannot select the property `#{property}`")
end

#where_present(property) ⇒ Object 



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# File 'lib/liquid/standardfilters.rb', line 474

def where_present(property)
  select { |item| item[property] }
rescue TypeError
  # Cannot index with the given property type (eg. indexing integers with strings
  # which are only allowed to be indexed by other integers).
  raise ArgumentError.new("cannot select the property `#{property}`")
end