{"id":27919,"date":"2018-01-15T14:22:12","date_gmt":"2018-01-15T14:22:12","guid":{"rendered":"https:\/\/dev.railscarma.com\/metamagic-101-introduction-installation-usage\/"},"modified":"2021-06-05T07:07:01","modified_gmt":"2021-06-05T07:07:01","slug":"verwendung-der-metamagic-101-einfuhrungsinstallation","status":"publish","type":"post","link":"https:\/\/www.railscarma.com\/de\/blog\/fachartikel\/verwendung-der-metamagic-101-einfuhrungsinstallation\/","title":{"rendered":"Metamagic 101 \u2013 Einf\u00fchrung, Installation und Nutzung"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"27919\" class=\"elementor elementor-27919\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5a4aef4b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5a4aef4b\" 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-27d57a0d\" data-id=\"27d57a0d\" 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-d4492d2 elementor-widget elementor-widget-text-editor\" data-id=\"d4492d2\" 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\tMetamagic Gem ist ein RoR-Plugin zum Erstellen und Verwalten von Meta-Tags. Es generiert die Meta-Tags automatisch und dynamisch und reduziert die Notwendigkeit, sie jedes Mal neu zu schreiben. Zus\u00e4tzlich zu den regul\u00e4ren Meta-Tags unterst\u00fctzt metamagic auch benutzerdefinierte Tags, OpenGraph (Facebook) und Twitter Cards. Dies ist ein entscheidender Faktor, der bei der Entwicklung von Webanwendungen ber\u00fccksichtigt werden muss.\n<h4><strong>Beginnen wir mit dem Verst\u00e4ndnis von Meta-Tags<\/strong><\/h4>\nMeta-Tags sind Datenelemente, die Details \u2013 auch Metainformationen oder Metadaten genannt \u2013 zu einem bestimmten HTML-Dokument bereitstellen. Dazu geh\u00f6ren die Seitenbeschreibung, die Schl\u00fcsselw\u00f6rter, Details zu den letzten \u00c4nderungen usw. Meta-Tags werden auf der Webseite nicht angezeigt. Sie erscheinen im Seitencode und sind normalerweise im \u201eKopf\u201c-Bereich der Webseite zu finden. Die Crawler-Programme, die Informationen f\u00fcr Suchmaschinen sammeln, verwenden Meta-Tags, um Inhalte auf Suchergebnisseiten im Web zu finden und zu kategorisieren. Meta-Tags werden nicht von allen Suchmaschinen verwendet, es wird jedoch empfohlen, Website-Meta-Tags zu optimieren.\n<h4><strong>Die Arten von Meta-Tags<\/strong><\/h4>\nDabei handelt es sich um vier wichtige Meta-Tags, die f\u00fcr das Internet-Marketing relevant sind. Sie sind wie folgt:\n<strong>Titel-Tags:<\/strong> Der Titel, der f\u00fcr eine Webseite in Suchmaschineneintr\u00e4gen angezeigt wird \u2013 wird auch auf der Browser-Registerkarte derselben Seite angezeigt.\n<strong>Beschreibungs-Tags:<\/strong> Die Beschreibung, die f\u00fcr eine Webseite in Suchmaschineneintr\u00e4gen direkt unter dem Titel-Tag angezeigt wird. Eine gute Beschreibung mit allen wichtigen Schl\u00fcsselw\u00f6rtern liefert den Crawler-Programmen Informationen \u00fcber die Webseite und kann auch verwendet werden, um das Publikum zum Besuch der Seite zu bewegen.\n<strong>Schl\u00fcsselwort-Tags<\/strong>: Das Schl\u00fcsselwort-Tag enth\u00e4lt eine Liste von Schl\u00fcsselw\u00f6rtern, die sich auf die Webseite beziehen.\n<strong>Alternative Text-Tags:<\/strong> Alternative oder Alt-Tags sind kurze Textbeschreibungen von Bildern. Sie sind n\u00fctzlich, um die Suchmaschinenoptimierung in Nur-Text-Browsern zu verbessern oder wenn die Grafiken deaktiviert sind. Auch n\u00fctzlich, um das Surferlebnis f\u00fcr Menschen mit verschiedenen Behinderungen zu verbessern.\n<h4><strong>Meta-Tags und Suchmaschinenoptimierung<\/strong><\/h4>\nDie Meta-Tags haben keinen Einfluss auf das Ranking der Webseite in den Suchmaschineneintr\u00e4gen. Bei richtiger Verwendung hilft es jedoch den Crawler-Programmen der Suchmaschinen, Informationen \u00fcber die Webseite zu klassifizieren, zu indizieren und anzuzeigen, wodurch Ihre Webseite in den Suchmaschinenergebnissen aufgef\u00fchrt wird.\n<h4><strong>Voraussetzungen f\u00fcr Metamagic Gem<\/strong><\/h4>\n<ul>\n \t<li>Schienen 3.0 oder h\u00f6her<\/li>\n \t<li>Ruby 1.9 oder h\u00f6her<\/li>\n<\/ul>\n<h4><strong>Metamagische Edelsteininstallation<\/strong><\/h4>\n<ol>\n \t<li>Gehen Sie zur Gemfile und f\u00fcgen Sie die Gem-Metamagie hinzu<\/li>\n \t<li>F\u00fchren Sie die Bundle-Installation aus<\/li>\n<\/ol>\n<h4><strong>Grundlegendes Anwendungsbeispiel<\/strong><\/h4>\nBetrachten wir das Blogging-System. Geben Sie oben in der Ansicht Folgendes ein, beispielsweise in app\/views\/blogs\/show.html.erb:\n<pre><code>&lt;% Metatitel: \u201eMein Blog\u201c, Beschreibung: \u201eWillkommen auf der Blogseite\u201c, Schl\u00fcsselw\u00f6rter: %w(Blogs Devcamp Portfolio) %&gt;<\/code><\/pre>\nGeben Sie Folgendes in app\/views\/layouts\/blog.html.erb ein:\n<pre><code>\n  &lt;%= metamagic %&gt; ... <\/code><\/pre>\nDie obigen Eintr\u00e4ge generieren den folgenden HTML-Inhalt:\n<img decoding=\"async\" class=\"alignnone size-full wp-image-27920\" src=\"https:\/\/www.railscarma.com\/wp-content\/uploads\/2018\/01\/Ruby-on-Rails.png\" alt=\"Ruby auf Schienen\" width=\"571\" height=\"146\" \/>\n<h4><strong>Vorlagen<\/strong><\/h4>\nVorlagen sind n\u00fctzlich, um Metawerte aus Ansichten in Layouts einzugeben. Sie k\u00f6nnen damit beispielsweise auf allen Seiten einen Wert oder ein Standardschl\u00fcsselwort hinzuf\u00fcgen. Vorlagen funktionieren mit allen Arten von Tags, einschlie\u00dflich Twitter, OpenGraph und so weiter.\n<h4><strong>Titelvorlagen<\/strong><\/h4>\nTitelvorlagen werden verwendet, um den Website-Namen automatisch in den Metatitel einzuf\u00fcgen. Geben Sie beispielsweise Folgendes in Ihre Vorlage ein:\n<pre><code>&lt;% Metatitel: \u201eMein Blog\u201c %&gt;<\/code><\/pre>\nGeben Sie Folgendes in Ihr Layout ein:\n<pre><code>&lt;% metamagische Site: \u201eMeine Site\u201c, Titel: [:blog, :site], Trennzeichen: \u201e \u2014 \u201e %&gt;<\/code><\/pre>\nDie obigen Eingaben ergeben das folgende Ergebnis:\n<pre><code>\n  \n  ...\n<\/code><\/pre>\nEs kann auch im Anwendungshelfer verwendet werden:\n<pre><code>Modul ApplicationHelper def meta_title_for(blog, site) return site if blog.blank? blog.include?(site) ? blog: \u201e#{blog} \u2013 #{site}\u201c Ende Ende<\/code><\/pre>\n<h4><strong>Schl\u00fcsselwortvorlage<\/strong><\/h4>\nSchl\u00fcsselwortvorlagen sind n\u00fctzlich, um allen Seiten einer Website Standardschl\u00fcsselw\u00f6rter hinzuzuf\u00fcgen. M\u00f6chten Sie mehr \u00fcber die RoR-Entwicklung erfahren? RailsCarma kann Ihnen helfen! <a href=\"\/de\/kontaktiere-uns\/\">Holen Sie es sich noch heute.<\/a>\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-3abfbec4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3abfbec4\" 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-6ba162c0\" data-id=\"6ba162c0\" 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-29f0dfdc elementor-widget elementor-widget-heading\" data-id=\"29f0dfdc\" 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\">Abonnieren Sie die neuesten Updates<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-697d14cd elementor-widget elementor-widget-shortcode\" data-id=\"697d14cd\" 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=\"Lader\"><\/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=\"ec95fb1fc4\">\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             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#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\">zusammenh\u00e4ngende Posts<\/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=\"Kaminari-Juwel\" href=\"https:\/\/www.railscarma.com\/de\/blog\/fachartikel\/kaminari-juwel\/?related_post_from=37277\">\r\n\r\n      <img decoding=\"async\" width=\"800\" height=\"300\" 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12px;\r\n      color: #3f3f3f;\r\n      margin: 10px 0px;\r\n      padding: 0px;\r\n      display: block;\r\n      text-decoration: none;\r\n          }\r\n\r\n    .related-post .owl-dots .owl-dot {\r\n          }\r\n\r\n      <\/style>\r\n      <script>\r\n      jQuery(document).ready(function($) {\r\n        $(\".related-post .post-list\").owlCarousel({\r\n          items: 2,\r\n          responsiveClass: true,\r\n          responsive: {\r\n            0: {\r\n              items: 1,\r\n            },\r\n            768: {\r\n              items: 2,\r\n            },\r\n            1200: {\r\n              items: 2,\r\n            }\r\n          },\r\n                      rewind: true,\r\n                                loop: true,\r\n                                center: false,\r\n                                autoplay: true,\r\n            autoplayHoverPause: true,\r\n                                nav: true,\r\n            navSpeed: 1000,\r\n            navText: ['<i class=\"fas fa-chevron-left\"><\/i>', '<i class=\"fas fa-chevron-right\"><\/i>'],\r\n                                dots: false,\r\n            dotsSpeed: 1200,\r\n                                                    rtl: false,\r\n          \r\n        });\r\n      });\r\n    <\/script>\r\n  <\/div>","protected":false},"excerpt":{"rendered":"<p>Metamagic gem ist ein RoR-Plugin f\u00fcr die Erstellung und Verwaltung von Meta-Tags. Es generiert die Meta-Tags automatisch und dynamisch und erspart so die Notwendigkeit, sie jedes Mal zu schreiben. Zus\u00e4tzlich zu den normalen Meta-Tags unterst\u00fctzt metamagic auch benutzerdefinierte Tags, OpenGraph (Facebook) und Twitter Cards. Dies ist ein entscheidender Faktor, der bei der Entwicklung von ...<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.railscarma.com\/de\/blog\/rails-link_to-method-the-complete-guide-with-examples\/\"> <span class=\"screen-reader-text\">Rails link_to Methode: Die vollst\u00e4ndige Anleitung mit Beispielen<\/span> Weiterlesen \u00bb<\/a><\/p>","protected":false},"author":1,"featured_media":31699,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[384],"tags":[382],"class_list":["post-27919","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical-articles","tag-ruby-on-rails"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Metamagic 101 \u2013 Introduction, Installation &amp; Usage - RailsCarma - Ruby on Rails Development Company specializing in Offshore Development<\/title>\n<meta name=\"description\" content=\"Metamagic gem is a RoR plugin for creating and managing meta tags. 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