Class: ActiveTsv::Relation

Inherits:
Object
  • Object
show all
Defined in:
lib/active_tsv/relation.rb

Instance Method Summary collapse

Constructor Details

#initialize(table, conditions) ⇒ Relation

Returns a new instance of Relation.



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# File 'lib/active_tsv/relation.rb', line 5

def initialize(table, conditions)
  @table = table
  @conditions = conditions
end

Instance Method Details

#exist? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_tsv/relation.rb', line 14

def exist?
  !first.nil?
end

#first ⇒ Object 



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# File 'lib/active_tsv/relation.rb', line 18

def first
  @table.find do |i|
    @conditions.all? do |k, v|
      i[k] == v.to_s
    end
  end
end

#last ⇒ Object 



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# File 'lib/active_tsv/relation.rb', line 26

def last
  to_a.last
end

#to_a ⇒ Object 



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# File 'lib/active_tsv/relation.rb', line 30

def to_a
  @table.select do |i|
    @conditions.all? do |k, v|
      i[k] == v.to_s
    end
  end
end

#where(conditions) ⇒ Object 



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# File 'lib/active_tsv/relation.rb', line 10

def where(conditions)
  self.class.new(@table, @conditions.merge(conditions))
end