79 lines
1.7 KiB
Ruby
79 lines
1.7 KiB
Ruby
module Ransack
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class Predicate
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attr_reader :name, :arel_predicate, :type, :formatter, :validator,
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:compound, :wants_array
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class << self
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def names
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Ransack.predicates.keys
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end
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def names_by_decreasing_length
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names.sort { |a, b| b.length <=> a.length }
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end
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def named(name)
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Ransack.predicates[name.to_s]
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end
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def detect_and_strip_from_string!(str)
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if p = detect_from_string(str)
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str.sub! /_#{p}$/, ''.freeze
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p
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end
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end
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def detect_from_string(str)
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names_by_decreasing_length.detect { |p| str.end_with?("_#{p}") }
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end
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# def name_from_attribute_name(attribute_name)
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# names_by_decreasing_length.detect {
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# |p| attribute_name.to_s.match(/_#{p}$/)
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# }
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# end
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# def for_attribute_name(attribute_name)
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# self.named(detect_from_string(attribute_name.to_s))
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# end
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end
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def initialize(opts = {})
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@name = opts[:name]
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@arel_predicate = opts[:arel_predicate]
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@type = opts[:type]
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@formatter = opts[:formatter]
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@validator = opts[:validator] ||
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lambda { |v| v.respond_to?(:empty?) ? !v.empty? : !v.nil? }
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@compound = opts[:compound]
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@wants_array = opts.fetch(:wants_array,
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@compound || Constants::IN_NOT_IN.include?(@arel_predicate))
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end
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def eql?(other)
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self.class == other.class &&
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self.name == other.name
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end
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alias :== :eql?
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def hash
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name.hash
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end
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def format(val)
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if formatter
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formatter.call(val)
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else
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val
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end
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end
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def validate(vals, type = @type)
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vals.any? { |v| validator.call(type ? v.cast(type) : v.value) }
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end
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end
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end
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