class Arel::Nodes::Extract
Attributes
alias[RW]
field[RW]
Public Class Methods
new(expr, field, aliaz = nil)
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Calls superclass method
Arel::Nodes::Unary.new
# File lib/arel/nodes/extract.rb, line 11 def initialize expr, field, aliaz = nil super(expr) @field = field @alias = aliaz && SqlLiteral.new(aliaz) end
Public Instance Methods
as(aliaz)
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# File lib/arel/nodes/extract.rb, line 17 def as aliaz self.alias = SqlLiteral.new(aliaz) self end
eql?(other)
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Calls superclass method
Arel::Nodes::Unary#eql?
# File lib/arel/nodes/extract.rb, line 26 def eql? other super && self.field == other.field && self.alias == other.alias end
Also aliased as: ==
hash()
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Calls superclass method
Arel::Nodes::Unary#hash
# File lib/arel/nodes/extract.rb, line 22 def hash super ^ [@field, @alias].hash end