{"id":27422,"date":"2017-11-29T11:05:21","date_gmt":"2017-11-29T11:05:21","guid":{"rendered":"https:\/\/dev.railscarma.com\/ruby-class-methods-class-instance-methods-ruby\/"},"modified":"2021-06-05T07:12:22","modified_gmt":"2021-06-05T07:12:22","slug":"ruby-class-methods-class-instance-methods-ruby","status":"publish","type":"post","link":"https:\/\/www.railscarma.com\/ja\/%e3%83%96%e3%83%ad%e3%82%b0\/%e3%83%ad%e3%83%bc\/ruby-class-methods-class-instance-methods-ruby\/","title":{"rendered":"Ruby \u306e\u30af\u30e9\u30b9 \u30e1\u30bd\u30c3\u30c9 : Ruby \u306e\u30af\u30e9\u30b9 \u30e1\u30bd\u30c3\u30c9\u3068\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 \u30e1\u30bd\u30c3\u30c9"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"27422\" class=\"elementor elementor-27422\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-53fce8ea elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"53fce8ea\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-156c6c04\" data-id=\"156c6c04\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-131a8aac elementor-widget elementor-widget-text-editor\" data-id=\"131a8aac\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tRuby \u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3059\u308b\u969b\u306e\u6700\u3082\u91cd\u8981\u306a\u5074\u9762\u306e 1 \u3064\u306f\u3001\u30af\u30e9\u30b9 \u30e1\u30bd\u30c3\u30c9\u3068\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 \u30e1\u30bd\u30c3\u30c9\u306e\u9055\u3044\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u306e\u9055\u3044\u306b\u3064\u3044\u3066\u306f\u3001\u3053\u306e\u6295\u7a3f\u3067\u8aac\u660e\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002\u307e\u305a\u3001\u30af\u30e9\u30b9 \u30ec\u30d9\u30eb\u306b\u5b58\u5728\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u30af\u30e9\u30b9 \u30e1\u30bd\u30c3\u30c9\u3068\u547c\u3070\u308c\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8 \u30ec\u30d9\u30eb\u306b\u5b58\u5728\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 \u30e1\u30bd\u30c3\u30c9\u3068\u8a00\u308f\u308c\u307e\u3059\u3002\u95a2\u9023\u4ed8\u3051\u3092\u5bb9\u6613\u306b\u3059\u308b\u305f\u3081\u306b\u3001\u958b\u767a\u8005\u306b\u3068\u3063\u3066\u3001\u30af\u30e9\u30b9\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u30af\u30e9\u30b9 \u30e1\u30bd\u30c3\u30c9\u3067\u3042\u308a\u3001\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 \u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\n<strong>\u4f8b<\/strong>: Ruby \u3067\u4f5c\u696d\u3059\u308b\u3068\u304d\u306f\u3001\u30af\u30e9\u30b9\u3082\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3042\u308b\u3053\u3068\u3001\u3057\u305f\u304c\u3063\u3066\u3001\u30af\u30e9\u30b9 \u30e1\u30bd\u30c3\u30c9\u3068\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u305d\u308c\u3089\u306e\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3059\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u306e\u307f\u5bfe\u5fdc\u3059\u308b\u3053\u3068\u3092\u7406\u89e3\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001Test \u3068\u3044\u3046\u540d\u524d\u306e\u30af\u30e9\u30b9\u3067 my_class_method \u3092\u5b9a\u7fa9\u3059\u308b\u3068\u3001my_class_method \u306f Test \u3068\u3044\u3046\u540d\u524d\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u306e\u307f\u5bfe\u5fdc\u3057\u3001\u3053\u306e Test \u306f\u300cClass\u300d\u3068\u3044\u3046\u540d\u524d\u306e\u7d44\u307f\u8fbc\u307f Ruby \u30af\u30e9\u30b9\u306e\u4f8b\u306b\u3059\u304e\u307e\u305b\u3093\u3002\n<h3><strong>\u30af\u30e9\u30b9\u30e1\u30bd\u30c3\u30c9\u3092\u3044\u3064\u4f7f\u7528\u3059\u308b\u304b?<\/strong><\/h3>\n\u30af\u30e9\u30b9 \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u7279\u5b9a\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304b\u3089\u72ec\u7acb\u3057\u305f\u6a5f\u80fd\u306e\u4e00\u90e8\u3067\u3042\u308a\u3001\u5358\u306b\u30af\u30e9\u30b9\u306b\u5c5e\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u30af\u30e9\u30b9 \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u56fa\u6709\u3067\u306f\u306a\u3044\u6a5f\u80fd\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\n<strong>\u4f8b\uff1a<\/strong>\n<h3><strong>\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 \u30e1\u30bd\u30c3\u30c9\u3092\u3044\u3064\u4f7f\u7528\u3059\u308b\u304b?<\/strong><\/h3>\n\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30af\u30e9\u30b9\u306e\u7279\u5b9a\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u64cd\u4f5c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e ID \u306b\u5bfe\u5fdc\u3059\u308b\u6a5f\u80fd\u3092\u5c0e\u5165\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\n<strong>\u4f8b\uff1a<\/strong>\n\n\u30af\u30e9\u30b9 \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u5834\u6240\u3068\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u5834\u6240\u306e\u3053\u306e\u4e00\u898b\u5fae\u5999\u306a\u9055\u3044\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u3053\u308c\u306b\u3064\u3044\u3066\u660e\u78ba\u306b\u7406\u89e3\u3057\u3066\u3044\u306a\u3044\u3068\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u306e\u8a2d\u8a08\u304c\u5931\u6557\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u30af\u30e9\u30b9 \u30e1\u30bd\u30c3\u30c9\u3068\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 \u30e1\u30bd\u30c3\u30c9\u306e\u4e21\u65b9\u304c\u4e92\u3044\u306e\u4ee3\u308f\u308a\u306b\u8aa4\u3063\u3066\u4f7f\u7528\u3055\u308c\u308b\u30b1\u30fc\u30b9\u304c\u983b\u7e41\u306b\u767a\u751f\u3057\u307e\u3059\u3002\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u8a2d\u8a08\u306e\u30ab\u30d7\u30bb\u30eb\u5316\u3068\u30e2\u30c7\u30ea\u30f3\u30b0\u306e\u5c5e\u6027\u306f\u3001\u305d\u306e\u6210\u529f\u306e\u91cd\u8981\u306a\u8981\u7d20\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u5b9f\u88c5\u3059\u308b\u6a5f\u80fd\u304c\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5bfe\u5fdc\u3059\u308b\u5834\u5408\u306f\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u540c\u6642\u306b\u3001\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b\u6a5f\u80fd\u304c\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u7279\u5b9a\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3068\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u77e5\u308b\u3053\u3068\u3082\u91cd\u8981\u3067\u3059\u3002\n\n<span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u4fdd\u5b58<\/span>\n\n<span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u4fdd\u5b58<\/span>\n\n<span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u4fdd\u5b58<\/span>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4fa06df4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4fa06df4\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-44735933\" data-id=\"44735933\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-78a0ce3d elementor-widget elementor-widget-heading\" data-id=\"78a0ce3d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u6700\u65b0\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u8cfc\u8aad\u3059\u308b<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5ec93cfb elementor-widget elementor-widget-shortcode\" data-id=\"5ec93cfb\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">\t\t\t\t\t<script type=\"text\/javascript\">\n\t\t\t\t\t\tvar gCaptchaSibWidget;\n                        var onloadSibCallbackInvisible = function () {\n\n                            var element = document.getElementsByClassName('sib-default-btn');\n                            var countInvisible = 0;\n                            var indexArray = [];\n                            jQuery('.sib-default-btn').each(function (index, el) {\n                                if ((jQuery(el).attr('id') == \"invisible\")) {\n                                    indexArray[countInvisible] = index;\n                                    countInvisible++\n                                }\n                            });\n\n                            jQuery('.invi-recaptcha').each(function (index, el) {\n                                grecaptcha.render(element[indexArray[index]], {\n                                    'sitekey': jQuery(el).attr('data-sitekey'),\n                                    'callback': sibVerifyCallback,\n                                });\n                            });\n                        };\n\t\t\t\t\t<\/script>\n\t\t\t\t\t                <script src=\"https:\/\/www.google.com\/recaptcha\/api.js?onload=onloadSibCallbackInvisible&render=explicit\" async defer><\/script>\n\t\t\t\t\n\t\t\t<form id=\"sib_signup_form_1\" method=\"post\" class=\"sib_signup_form\" action=\"\">\n\t\t\t\t<div class=\"sib_loader\" style=\"display:none;\"><img\n\t\t\t\t\t\t\tsrc=\"https:\/\/www.railscarma.com\/wp-includes\/images\/spinner.gif\" alt=\"\u30ed\u30fc\u30c0\"><\/div>\n\t\t\t\t<input type=\"hidden\" name=\"sib_form_action\" value=\"subscribe_form_submit\">\n\t\t\t\t<input type=\"hidden\" name=\"sib_form_id\" value=\"1\">\n                <input type=\"hidden\" name=\"sib_form_alert_notice\" value=\"Please fill out this field\">\n                <input type=\"hidden\" name=\"sib_form_invalid_email_notice\" value=\"Your email address is invalid\">\n                <input type=\"hidden\" name=\"sib_security\" value=\"d7f7626ab9\">\n\t\t\t\t<div class=\"sib_signup_box_inside_1\">\n\t\t\t\t\t<div style=\"\/*display:none*\/\" class=\"sib_msg_disp\">\n\t\t\t\t\t<\/div>\n                                            <div id=\"sib_captcha_invisible\" class=\"invi-recaptcha\" data-sitekey=\"6LdikOAaAAAAAJ6SWrrKVQrtw7TQpQAEnv0HS0G3\"><\/div>\n                    \t\t\t\t\t<p class=\"sib-email-area\">\r\n    <label class=\"sib-email-area\"><\/label>\r\n    <input type=\"email\" class=\"sib-email-area\" name=\"email\" required=\"required\" placeholder=\"\u96fb\u5b50\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\">\r\n<\/p>\r\n<p class=\"sib-NAME-area\">\r\n    <label class=\"sib-NAME-area\"><\/label>\r\n    <input type=\"text\" class=\"sib-NAME-area\" name=\"NAME\" placeholder=\"\u540d\u524d\">\r\n<\/p>\r\n<p>\r\n    <input type=\"submit\" id=\"invisible\" class=\"sib-default-btn\" value=\"\u8cfc\u8aad\u3059\u308b\">\r\n<\/p>\t\t\t\t<\/div>\n\t\t\t<input type=\"hidden\" name=\"trp-form-language\" value=\"ja\"\/><\/form>\n\t\t\t<style>\n\t\t\t\tform#sib_signup_form_1 p.sib-alert-message {\n    padding: 6px 12px;\n    margin-bottom: 20px;\n    border: 1px solid transparent;\n    border-radius: 4px;\n    -webkit-box-sizing: border-box;\n    -moz-box-sizing: border-box;\n    box-sizing: border-box;\n}\nform#sib_signup_form_1 p.sib-alert-message-error {\n    background-color: #f2dede;\n    border-color: #ebccd1;\n    color: #a94442;\n}\nform#sib_signup_form_1 p.sib-alert-message-success {\n    background-color: #dff0d8;\n    border-color: #d6e9c6;\n    color: #3c763d;\n}\nform#sib_signup_form_1 p.sib-alert-message-warning {\n    background-color: #fcf8e3;\n    border-color: #faebcc;\n    color: #8a6d3b;\n}\n\t\t\t<\/style>\n\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t  <div class=\"related-post slider\">\r\n        <div class=\"headline\">\u95a2\u9023\u8a18\u4e8b<\/div>\r\n    <div class=\"post-list owl-carousel\">\r\n\r\n            <div class=\"item\">\r\n            <div class=\"thumb post_thumb\">\r\n    <a  title=\"\u30ab\u30df\u30ca\u30ea\u30b8\u30a7\u30e0\" href=\"https:\/\/www.railscarma.com\/ja\/%e3%83%96%e3%83%ad%e3%82%b0\/%e6%8a%80%e8%a1%93%e8%ab%96%e6%96%87\/%e3%82%ab%e3%83%9f%e3%83%8a%e3%83%aa%e3%82%b8%e3%82%a7%e3%83%a0\/?related_post_from=37277\">\r\n\r\n      <img decoding=\"async\" width=\"800\" height=\"300\" src=\"https:\/\/www.railscarma.com\/wp-content\/uploads\/2023\/04\/kaminari-gem.jpg\" class=\"attachment-full size-full wp-post-image\" alt=\"\u30ab\u30df\u30ca\u30ea\u30b8\u30a7\u30e0\" 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