52 lines
1001 B
Ruby
52 lines
1001 B
Ruby
module Ransack
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class Visitor
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def accept(object)
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visit(object)
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end
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def can_accept?(object)
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respond_to? DISPATCH[object.class]
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end
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def visit_Array(object)
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object.map { |o| accept(o) }.compact
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end
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def visit_Ransack_Nodes_Condition(object)
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object.arel_predicate if object.valid?
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end
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def visit_Ransack_Nodes_Grouping(object)
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if object.combinator == Constants::OR
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visit_or(object)
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else
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visit_and(object)
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end
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end
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def visit_and(object)
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raise "not implemented"
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end
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def visit_or(object)
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nodes = object.values.map { |o| accept(o) }.compact
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nodes.inject(&:or)
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end
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def quoted?(object)
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raise "not implemented"
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end
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def visit(object)
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send(DISPATCH[object.class], object)
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end
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DISPATCH = Hash.new do |hash, klass|
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hash[klass] = "visit_#{
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klass.name.gsub(Constants::TWO_COLONS, Constants::UNDERSCORE)
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}"
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end
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end
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end
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