Manto\u0161ana, modu\u013cu iek\u013cau\u0161ana \u013cauj klasei p\u0101r\u0146emt vai iek\u013caut k\u0101da veida \u012bpa\u0161\u012bbas. Nesen sask\u0101ros ar probl\u0113mu, ka klasei \u012bpa\u0161\u012bbas ir j\u0101maina atkar\u012bb\u0101 no k\u0101da tai pie\u0161\u0137irt\u0101 atrib\u016bta. Sapratu, ka ierast\u0101 pieeja neder\u0113s.<\/p>\n
Manto\u0161ana neder, jo nav zin\u0101ms k\u0101da veida objekts tas b\u016bs. Iek\u013caut visas iesp\u0113jam\u0101s \u012bpa\u0161\u012bbas ar\u012b nav laba ideja, jo mainoties \u012bpa\u0161\u012bb\u0101m, objektam viena un t\u0101 pat\u0161a nosaukuma metode, p\u0113c lo\u0123ikas, var dar\u012bt da\u017e\u0101das lietas. T\u0101p\u0113c izveidoju mazliet citu pieeju.<\/p>\n
Pieeja nav nekas jauns un neredz\u0113ts, bet man \u0161\u0137ita interesanti. Vien\u012bg\u0101 probl\u0113ma ir t\u0101, ka mainoties v\u0113lreiz \u0161ai \u012bpa\u0161\u012bbai, \u0161aj\u0101 gad\u012bjuma\u00a0type<\/em>, jaunas metodes tiek pievienotas, bet vec\u0101s netiek no\u0146emtas no\u0146emtas, tom\u0113r ja metodes sakr\u012bt, tad, protams, t\u0101s tiek p\u0101rrakst\u012btas.<\/p>\n \u0160\u012bs \u012bpa\u0161\u012bbas var \u0113rti izmantot, lai instanci papildin\u0101tu ar atrib\u016btiem. B\u016btu labi, ja var\u0113tu no\u0146emt nost jau pievienot\u0101s \u012bpa\u0161\u012bbas.<\/p>\n Bet neesmu v\u0113l atradis veidu k\u0101 to izdar\u012bt :).<\/p>\n","protected":false},"excerpt":{"rendered":"Manto\u0161ana, modu\u013cu iek\u013cau\u0161ana \u013cauj klasei p\u0101r\u0146emt vai iek\u013caut k\u0101da veida \u012bpa\u0161\u012bbas. Nesen sask\u0101ros ar probl\u0113mu, ka klasei \u012bpa\u0161\u012bbas ir j\u0101maina atkar\u012bb\u0101 no k\u0101da tai pie\u0161\u0137irt\u0101 atrib\u016bta. Sapratu, ka ierast\u0101 pieeja neder\u0113s. Manto\u0161ana neder, jo nav zin\u0101ms k\u0101da veida objekts tas [...]","protected":false},"author":2,"featured_media":5602,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_cloudinary_featured_overwrite":false},"categories":[71],"tags":[38,29,39,25],"acf":[],"yoast_head":"\nclass Person\r\n AVAILABLE_TYPES=[:infant,:child,:adult]\r\n attr_accessor :name\r\n attr_reader :type\r\n\r\n def initalize(name)\r\n self.name=name\r\n self.type=:infant\r\n end\r\n\r\n def type=(value)\r\n raise \"Bad type.\" unless AVAILABLE_TYPE.include?(value)\r\n self.type=value\r\n add_properties\r\n end\r\n\r\n private\r\n \r\n def add_properties\r\n word_in_parts=self.type.to_s.match(\/(\\w{1})(\\w*)\/)\r\n capital_word=\"#{word_in_parts[1].upcase}#{word_in_parts[2]}\"\r\n self.extend(Object.const_get(capital_word.to_sym))\r\n end\r\nend\r\n\r\nmodule Infant\r\n def favorite_drink\r\n :milk\r\n end\r\nend\r\n\r\nmodule Child\r\n def favorite_drink\r\n :juice\r\n end\r\nend\r\n\r\nmodule Adult\r\n def favorite_drink\r\n :beer\r\n end\r\nend\r\n\r\noskars=Person.new(\"Oskars\")\r\nputs oskars.favorite_drink #=> :milk\r\noskars.type=:adult\r\nputs oskars.favorite_drink #=> :beer<\/pre>\n