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rails--rails/lib/arel/nodes/named_function.rb
Ernie Miller 6e638bba59 Add equality to ALL THE THINGS (that matter)
People are often trying to use ARel nodes inside ActiveRecord, and when
they do so, lots of things can break, because ActiveRecord relies on
Array#uniq and sometimes hash key equality to handle values that end up
in wheres, havings, etc. By implementing equality for all the nodes, we
should hopefully be able to prevent any nodes (even nodes containing
other nodes) from failing an equality check they should otherwise pass,
and alleviate many of these errors.

Fixes #130
2012-08-18 22:33:25 -04:00

21 lines
371 B
Ruby

module Arel
module Nodes
class NamedFunction < Arel::Nodes::Function
attr_accessor :name
def initialize name, expr, aliaz = nil
super(expr, aliaz)
@name = name
end
def hash
super ^ @name.hash
end
def eql? other
super && self.name == other.name
end
alias :== :eql?
end
end
end