{"id":726,"date":"2013-02-12T01:31:35","date_gmt":"2013-02-12T01:31:35","guid":{"rendered":"https:\/\/dev.railscarma.com\/how-to-create-a-blog-with-ruby-on-rails\/"},"modified":"2021-06-07T08:00:36","modified_gmt":"2021-06-07T08:00:36","slug":"so-erstellen-sie-einen-blog-mit-ruby-on-rails","status":"publish","type":"post","link":"https:\/\/www.railscarma.com\/de\/blog\/fachartikel\/so-erstellen-sie-einen-blog-mit-ruby-on-rails\/","title":{"rendered":"Wie erstelle ich ein Blog mit Ruby On Rails?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"726\" class=\"elementor elementor-726\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-441e7d5f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"441e7d5f\" 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-42eafe25\" data-id=\"42eafe25\" 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-5bbf2474 elementor-widget elementor-widget-text-editor\" data-id=\"5bbf2474\" 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\t\n<p>Lassen Sie uns zun\u00e4chst einen kurzen \u00dcberblick \u00fcber Ruby on Rails geben: <strong>Ruby auf Schienen<\/strong> ist ein Framework f\u00fcr die Ruby-Sprache, das f\u00fcr die schnelle Entwicklung von verwendet wird <strong>Web Applikationen<\/strong>. Dies geschieht dadurch, dass Sie sich auf die L\u00f6sung der Probleme Ihrer Kunden konzentrieren k\u00f6nnen und sich nicht mit dem Aufbau einer Infrastruktur zur Unterst\u00fctzung der Probleme Ihrer Kunden besch\u00e4ftigen m\u00fcssen.<\/p>\n\n\n\n<p>Seien wir ehrlich: Sie m\u00f6chten nicht jedes Mal, wenn Sie ein neues Projekt starten, eine Datenbankzugriffsebene erstellen. Sie m\u00f6chten auch nicht regelm\u00e4\u00dfig ein voll funktionsf\u00e4higes MVC-Muster implementieren. Das ist der springende Punkt bei Frameworks; Sie geben Ihnen einen Ausgangspunkt, auf dem Sie aufbauen k\u00f6nnen. Etwas mehr \u00fcber MVC: \u2013 Es lohnt sich, MVC (Model-View-Controller) zu erw\u00e4hnen, weil es einer der Faktoren sein kann, die Leute davon abhalten, Frameworks wie Rails auszuprobieren. Es handelt sich eher um eine fortgeschrittene Methode zur Programmierung des ber\u00fchmtesten Architekturstils.<\/p>\n\n\n\n<p>Schauen wir sie uns kurz an: - MODELL: - In der Modellebene definieren Sie Klassen f\u00fcr die Daten, die Ihre Anwendung verwenden\/speichern wird. Wenn Sie beispielsweise Beitr\u00e4ge f\u00fcr einen Blog speichern m\u00f6chten, steht Ihnen ein \u201ePost\u201c-Modell zur Verf\u00fcgung. Das Modell verf\u00fcgt \u00fcber die F\u00e4higkeit, mit der Datenbank zu interagieren, Daten abzurufen und zu speichern. Diese Funktionalit\u00e4t wird durch die Vererbung von der ActiveRecord-Superklasse erreicht. Alle Methoden, die auf diese Daten einwirken, sollten ebenfalls im Modell platziert werden. ANSICHT: \u2013 Die Ansichtsebene hat einen Hauptzweck \u2013 das Relevante zur\u00fcckzugeben.<\/p>\n\n\n\n<p>HTML, das im Browser des Benutzers gerendert werden soll. In Rail wird eine Ansicht in einer erb-Datei (Embedded Ruby) gespeichert, die sowohl HTML- als auch eingebettete Ruby-Anweisungen enth\u00e4lt. CONTROLLER:- Ohne den Controller w\u00fcrde nichts passieren. Der Controller interagiert mit dem Modell, um Daten abzurufen und zu speichern. Anschlie\u00dfend werden alle vom Modell erfassten Daten an die Ansicht \u00fcbergeben. Die Ansicht gibt den resultierenden HTML-Code an den Controller zur\u00fcck und der Controller sendet ihn zur\u00fcck an den Browser des Benutzers. Erstellen eines Blogs von Grund auf mit <strong>RUBIN AUF SCHIENEN<\/strong>:- Um ein neues Projekt in Ruby On Rails (ROR) zu erstellen, m\u00fcssen Sie den folgenden Befehl \u00fcber das Terminal oder die Eingabeaufforderung eingeben.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.railscarma.com\/de\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Ruby auf Schienen<\/strong><\/a> new myblog -d mysql \/\/-d mysql gibt Rails f\u00fcr die Verwendung von mysql an. Standardm\u00e4\u00dfig wird SQLite verwendet. Anforderungen: \u2013 \u2013&gt;Es sollte ein Blog erstellt werden und es dem Benutzer erm\u00f6glichen, Beitr\u00e4ge zu schreiben. \u2013&gt;Andere Benutzer k\u00f6nnen Beitr\u00e4ge kommentieren. \/\/Viele Zeilen k\u00f6nnen hier basierend auf den Anforderungen hinzugef\u00fcgt werden. ANSATZ:- \u2013&gt;Wir ben\u00f6tigen ein Modell sowohl f\u00fcr Beitr\u00e4ge als auch f\u00fcr Kommentare. \u2013&gt;Wir m\u00fcssen auch die Beziehung zwischen diesen Modellen definieren, z. B.: eins zu eins, eins zu viele, viele zu viele usw. GER\u00dcST: \u2013 \u2013&gt;Scaffold in Rails ist ein Skript, das geeignete Controller, Modelle und Ansichten basierend auf den verwendeten Parametern generiert und Schienenbefehl.<\/p>\n\n\n\n<p>Wir k\u00f6nnen diesen Befehl verwenden, um unsere Post- und Kommentarschienen zu erstellen. Ger\u00fcstposttitel generieren: String-K\u00f6rper: Textschienen. Ger\u00fcstkommentar-Namen: String-K\u00f6rper: Text generieren erstellt, m\u00fcssen wir Beziehungen zwischen Modellen definieren. Post.rb-Klasse Post &lt; ActiveRecord::Base has_many :comments end Comment.rb-Klasse Comment &lt; ActiveRecord::Base geh\u00f6rt_zu :post end SO ERSTELLEN SIE EINE DATENBANK UND TABELLEN: \u2013 Jetzt haben wir erstellt F\u00fcr die Modelle m\u00fcssen wir die Datenbank erstellen und dann Tabellen erstellen, um Informationen zu Beitr\u00e4gen und Kommentaren zu speichern.<\/p>\n\n\n\n<p>Um die Datenbank zu erstellen, m\u00fcssen wir den Benutzernamen und das Passwort zur Datei \u201edatabase.yml\u201c hinzuf\u00fcgen, d. h.: \u2013 Entwicklung: Adapter: MySQL-Codierung: UTF8-Wiederverbindung: False Datenbank: Myblog_Development Pool: 5 Benutzername: Root-Passwort: YourrootPassword Host: Localhost \u2013 \u2013 &gt; Nachher Wir haben die Datenbank konfiguriert, die wir zum Erstellen der Datenbank ben\u00f6tigen: - cd myblog \/\/von der Eingabeaufforderung rake db:create Datenbankmigration In Ruby on Rails ist eine Migration der Name f\u00fcr den Prozess, bei dem Ihre Datenbank von einem Zustand in einen anderen verschoben wird.<\/p>\n\n\n\n<p><strong>Einige Beispiele f\u00fcr die Migration Ihrer Datenbank von einem Staat in einen anderen sind:<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>&nbsp; Tabellen erstellen<\/li><li>&nbsp; Tabellen entfernen<\/li><li>&nbsp; Neue Felder hinzuf\u00fcgen<\/li><li>&nbsp; Felder entfernen<\/li><\/ul>\n\n\n\n<p>Als Sie die beiden Modelle f\u00fcr Beitr\u00e4ge und Kommentare mit Scaffold erstellt haben, wurden automatisch mehrere Dateien erstellt. Insbesondere wurden Migrationsdateien im Ordner dbmigrate erstellt. Diese Dateien werden zum Erstellen der Tabellen f\u00fcr die Beitrags- und Kommentarmodelle verwendet. Um die Tabellen mithilfe der Migrationsdateien zu erstellen, sollten Sie den folgenden Befehl ausf\u00fchren: rake db:migrate Die Tabellen \u201eBeitr\u00e4ge\u201c und \u201eKommentare\u201c sollten jetzt erstellt werden. ERGEBNISSE ANSEHEN:- \u2013&gt;Ja, das ist es!!!<\/p>\n\n\n\n<p>Wir haben unser Projekt erstellt und k\u00f6nnen die Ergebnisse sehen. Starten Sie einfach den Server vom Terminal aus und geben Sie Folgendes ein: - Rails s oder Rails S -p 3001 \/\/ Die Option -p wird verwendet, um einen anderen Port zu verwenden. Standardm\u00e4\u00dfig wird Port 3000 verwendet. \u2013&gt;\u00d6ffnen Sie nun den Browser und sehen Sie sich das Ergebnis unter http:\/\/localhost:3000 an. Zuvor m\u00fcssen wir die Standardrouten in der Datei \u201econfiguration\/routes.rb\u201c \u00e4ndern und den Routenpfad entsprechend \u00e4ndern.<\/p>\n\n\n\n<p><a href=\"\/de\/kontaktiere-uns\/\">Nehmen Sie Kontakt mit uns auf.<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.railscarma.com\/de\/contact\/\"><br><br><\/a><\/p>\n\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-122bf144 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"122bf144\" 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-4e246f48\" data-id=\"4e246f48\" 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-3cd4f82c elementor-widget elementor-widget-heading\" data-id=\"3cd4f82c\" 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-4ba15ffc elementor-widget elementor-widget-shortcode\" data-id=\"4ba15ffc\" 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 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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=\"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=\"E-Mail-Adresse\">\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=\"Name\">\r\n<\/p>\r\n<p>\r\n    <input type=\"submit\" id=\"invisible\" class=\"sib-default-btn\" value=\"Abonnieren\">\r\n<\/p>\t\t\t\t<\/div>\n\t\t\t<input type=\"hidden\" name=\"trp-form-language\" value=\"de\"\/><\/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\">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\" 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 F\u00fchren Sie Sprachanrufe \u00fcber Ruby on Rails-Webanwendungen durch  <\/a>\r\n\r\n        <\/div>\r\n      \r\n  <\/div>\r\n\r\n  <script>\r\n      <\/script>\r\n  <style>\r\n    .related-post {}\r\n\r\n    .related-post .post-list {\r\n      text-align: left;\r\n          }\r\n\r\n    .related-post .post-list .item {\r\n      margin: 10px;\r\n      padding: 10px;\r\n          }\r\n\r\n    .related-post .headline {\r\n      font-size: 14px !important;\r\n      color: #999999 !important;\r\n          }\r\n\r\n    .related-post .post-list .item .post_thumb {\r\n      max-height: 220px;\r\n      margin: 10px 0px;\r\n      padding: 0px;\r\n      display: block;\r\n          }\r\n\r\n    .related-post .post-list .item .post_title {\r\n      font-size: 14px;\r\n      color: #000000;\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 .post-list .item .post_excerpt {\r\n      font-size: 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>Let us first have a brief overview of Ruby on Rails:- Ruby on Rails is a framework for the Ruby language, which is used for rapid development of web applications. 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