42 lines
961 B
Ruby
42 lines
961 B
Ruby
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module ActiveRecord
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class DynamicFinderMatch
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def self.match(method)
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df_match = self.new(method)
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df_match.finder ? df_match : nil
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end
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def initialize(method)
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@finder = :first
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case method.to_s
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when /^find_(all_by|last_by|by)_([_a-zA-Z]\w*)$/
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@finder = :last if $1 == 'last_by'
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@finder = :all if $1 == 'all_by'
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names = $2
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when /^find_by_([_a-zA-Z]\w*)\!$/
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@bang = true
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names = $1
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when /^find_or_(initialize|create)_by_([_a-zA-Z]\w*)$/
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@instantiator = $1 == 'initialize' ? :new : :create
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names = $2
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else
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@finder = nil
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end
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@attribute_names = names && names.split('_and_')
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end
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attr_reader :finder, :attribute_names, :instantiator
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def finder?
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!@finder.nil? && @instantiator.nil?
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end
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def instantiator?
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@finder == :first && !@instantiator.nil?
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end
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def bang?
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@bang
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end
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end
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end
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