78 lines
2.2 KiB
Ruby
78 lines
2.2 KiB
Ruby
class Item < ActiveRecord::Base
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set_table_name 'objects' # Neo & PHP Impress call them objects, but the class name is a conflict (duh!)
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set_inheritance_column 'inheritance_type' # PHP Impress used "type" to describe category
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scope :alphabetize, order('name ASC')
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# Not defining validations, since this app is currently read-only
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def species_support_ids
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@species_support_ids_array ||= read_attribute('species_support_ids').split(',').map(&:to_i)
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end
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def species_support_ids=(replacement)
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replacement = replacement.join(',') if replacement.is_a?(Array)
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write_attribute('species_support_ids', replacement)
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end
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def self.search(query)
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query = query.strip if query
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raise ArgumentError, "Please provide a search query" if query.blank?
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query_conditions = [Condition.new]
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in_phrase = false
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query.each_char do |c|
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if c == ' ' && !in_phrase
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query_conditions << Condition.new
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elsif c == '"'
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in_phrase = !in_phrase
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elsif c == ':' && !in_phrase
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query_conditions.last.to_property!
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elsif c == '-' && !in_phrase && query_conditions.last.empty?
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query_conditions.last.negate!
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else
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query_conditions.last << c
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end
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end
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query_conditions.inject(self) do |scope, condition|
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condition.narrow(scope)
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end
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end
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private
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class Condition < String
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def to_property!
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@property = self.clone
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self.replace ''
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end
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def negate!
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@negative = true
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end
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def narrow(scope)
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items = Table(:objects)
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if @property == 'species'
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species = Species.find_by_name(self)
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# TODO: add a many-to-many table to handle this relationship
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condition = items[:species_support_ids].matches_any(
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species.id,
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"#{species.id},%",
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"%,#{species.id},%",
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"%,#{species.id}"
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)
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else
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matcher = "%#{self}%"
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condition = items[:name].matches(matcher).or(
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items[:description].matches(matcher)
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)
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end
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condition = condition.not if @negative
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scope.where(condition)
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end
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def inspect
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@property ? "#{@property}:#{super}" : super
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end
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end
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end
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