module ConfigurableEnum
Constants
- VERSION
Public Instance Methods
configurable_enum(column_name, mapping_class: [name, column_name.to_s.camelize, 'Mapping'].join)
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# File lib/configurable_enum.rb, line 5 def configurable_enum column_name, mapping_class: [name, column_name.to_s.camelize, 'Mapping'].join mapping_model = mapping_class.to_s.constantize query_method = column_name.to_s.pluralize decorate_attribute_type(column_name, :enum) do |subtype| EnumType.new(column_name, self, subtype) end cache_key = "configurable_enum/#{self.name}/#{column_name}" # === Example for model `Book`'s column `category` === # `Book.categories` returns the hash mapping from the stored data define_singleton_method query_method do Rails.cache.fetch(cache_key) do ActiveSupport::HashWithIndifferentAccess.new( mapping_model.all.map { |record| [ record.label, record.value ] }.to_h ) end end # `Book.set_categories` will update or create the mapping records # that is specified by keys of the hash you provided define_singleton_method "set_#{query_method}" do |mapping| mapping.each_pair do |label, value| value, remarks = value if value.is_a?(Array) mapping_model.find_by(label: label)&.update(value: value, remarks: remarks) || mapping_model.create(label: label, value: value, remarks: remarks) end end mapping_model.class_eval do default_scope { order(value: :asc) } after_commit { Rails.cache.delete(cache_key) } end end