impress/app/models/item.rb

64 lines
1.8 KiB
Ruby

class Item < ActiveRecord::Base
set_table_name 'objects' # Neo & PHP Impress call them objects, but the class name is a conflict (duh!)
set_inheritance_column 'inheritance_type' # PHP Impress used "type" to describe category
# Not defining validations, since this app is currently read-only
def species_support_ids
@species_support_ids_array ||= read_attribute('species_support_ids').split(',').map(&:to_i)
end
def species_support_ids=(replacement)
replacement = replacement.join(',') if replacement.is_a?(Array)
write_attribute('species_support_ids', replacement)
end
def self.search(query)
query_conditions = [Condition.new]
in_phrase = false
query.each_char do |c|
if c == ' ' && !in_phrase
query_conditions << Condition.new
elsif c == '"'
in_phrase = !in_phrase
elsif c == ':' && !in_phrase
query_conditions.last.to_property!
else
query_conditions.last << c
end
end
query_conditions.inject(self) do |scope, condition|
condition.narrow(scope)
end
end
private
class Condition < String
attr_reader :property
def to_property!
@property = self.clone
self.replace ''
end
def narrow(scope)
if @property == 'species'
species = Species.find_by_name(self)
# TODO: add a many-to-many table to handle this relationship
scope.where('species_support_ids = ? OR species_support_ids LIKE ? OR species_support_ids LIKE ? OR species_support_ids LIKE ?',
species.id,
"#{species.id},%",
"%,#{species.id},%",
"%,#{species.id}"
)
else
scope.where('name LIKE :matcher OR description LIKE :matcher', :matcher => "%#{self}%")
end
end
def inspect
@property ? "#{@property}:#{super}" : super
end
end
end