{"id":26431,"date":"2017-02-28T11:47:35","date_gmt":"2017-02-28T11:47:35","guid":{"rendered":"https:\/\/dev.railscarma.com\/multi-tenancy-using-apartment-gem\/"},"modified":"2024-01-10T12:57:15","modified_gmt":"2024-01-10T12:57:15","slug":"multi-tenant-vermietung-mit-apartment-gem","status":"publish","type":"post","link":"https:\/\/www.railscarma.com\/de\/blog\/fachartikel\/multi-tenant-vermietung-mit-apartment-gem\/","title":{"rendered":"Multi-Tenancy durch Nutzung von Apartment gem"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"26431\" class=\"elementor elementor-26431\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-21371e45 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"21371e45\" 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-5d40d7d7\" data-id=\"5d40d7d7\" 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-40712c7c elementor-widget elementor-widget-text-editor\" data-id=\"40712c7c\" 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<p>Lassen Sie uns zun\u00e4chst den Unterschied zwischen Single- und Multi-Tenancy verstehen<br>\n<strong><br>\nEinzelmietverh\u00e4ltnis<\/strong>:<\/p>\n<p align=\"justify\">Jeder Kunde verf\u00fcgt \u00fcber eine eigene Softwareinstanz, eine eigene Datenbank und diese dient nur einem Kunden. Dabei kann die Software aufgrund ihrer Eigenst\u00e4ndigkeit individuell an die spezifischen Kundenanforderungen angepasst werden.<\/p>\n<p><strong><br>\nMehrmandantenf\u00e4higkeit:<\/strong><\/p>\n<p align=\"justify\">In diesem Fall bedient eine einzelne Instanz einer Softwareanwendung mehrere Kunden. Hierbei bezeichnen wir jeden Kunden als Mieter. Hier k\u00f6nnen wir die UI-Regeln und Gesch\u00e4ftsregeln \u00e4ndern, aber keinen Anwendungscode \u00e4ndern, da dieselbe Architektur von mehreren Kunden gemeinsam genutzt wird. Es ist wirtschaftlich, da die Softwareentwicklungs- und Wartungskosten zwischen den Kunden aufgeteilt werden. Updates k\u00f6nnen jedoch nur vom Anbieter durchgef\u00fchrt werden.<\/p>\n<p><a href=\"https:\/\/www.railscarma.com\/wp-content\/uploads\/2024\/01\/singletenant-multitenant.png\"><img decoding=\"async\" class=\"alignnone size-full wp-image-26437\" src=\"https:\/\/www.railscarma.com\/wp-content\/uploads\/2024\/01\/singletenant-multitenant.png\" alt=\"singletenant-multitenant\" width=\"502\" height=\"182\"><\/a><br>\n<strong>Vorteile: <\/strong><br>\n1. Single hardware that manages multiple customers.<br>\n2. Cost savings. Cost can be shared between all the customers.<br>\n3. Easy maintenance<br>\n4. Configuration can be changed without touching codebase.<br>\n5. New tenants can be added easily since it is a shared architecture.<\/p>\n<p><strong>Nachteile:<\/strong><br>\nDB customization will be difficult to handle since it is a single DB shared between multiple customers with different tenants.<\/p>\n<p>There are milia, acts_as_tenant and apartment gem to handle multi-tenancy in the Rails application.<\/p>\n<p><strong>Apartment-Juwel:<\/strong><\/p>\n<p align=\"justify\">Dieses Juwel verfolgt einen anderen Weg, mit Multi-Tenancy umzugehen. Es funktioniert, indem f\u00fcr jeden Mandanten eine andere Datenbank erstellt wird. F\u00fcr PostgreSql wird f\u00fcr jeden Mandanten ein anderes Schema erstellt. Ich mag diesen Ansatz vor dem Hintergrund, dass die Informationen in dieser Situation wirklich uninteressant sind. Die Datenbank wird nicht geteilt und wenn Sie die Daten eines Kunden l\u00f6schen m\u00f6chten, m\u00fcssen Sie lediglich dessen Datenbank (oder Muster) l\u00f6schen. Es unterst\u00fctzt auch Aufz\u00fcge und erm\u00f6glicht den automatischen Wechsel zwischen dem Mieter des Kunden und dadurch die Automatisierung der Wechsellogik.<\/p>\n<p>This gem helps us to deal with multi tenancy in Rails application.<\/p>\n<p>Add the line below, to your Gemfile and perform bundle install.<\/p>\n<pre><code>Juwel &#039;Wohnung&#039;<\/code><\/pre>\n<p>F\u00fchren Sie den folgenden Befehl aus, um eine Apartment-Initialisierungsdatei zu generieren:<\/p>\n<pre><code>Bundle Exec Rails generieren Apartment:install<\/code><\/pre>\n<pre><code>config.excluded_models = %w{ Tenant } <\/code><\/pre>\n<p>Here, we can specify the tenants which are of global scope, such as the Authentication model which is a common one for all the tenants.<\/p>\n<p>Here, I will be creating a Customer with subdomains, so, whenever customer logs in to the application, apartment fetches the subdomains and will query the database, based on tenant subdomain.<\/p>\n<pre><code>Schienen g Ger\u00fcst Kundenname:string Mieterdom\u00e4ne:string<\/code><\/pre>\n<p>Tun<\/p>\n<pre><code>Schienen db: migrieren<\/code><\/pre>\n<p>Sobald wir den Kunden erstellt haben, m\u00fcssen wir einen Wohnungsmieter erstellen.<\/p>\n<pre><code>Apartment::Tenant.create(&#039;tenant_name&#039;) \u2013 Zum Erstellen eines Mieters<\/code><\/pre>\n<p>Verwenden Sie den R\u00fcckruf \u201eafter_create\u201c in Ihrem Modell, um Mandanten zu erstellen.<\/p>\n<pre><code>def create_tenant Apartment::Tenant.create(tenant_domain) end<\/code><\/pre>\n<p>Once the above callback gets executed, all the migrations will run under that respective tenant.<\/p>\n<p>Switching of subdomains will be handled automatically when we request the application with subdomains. Below is the configuration line to switch the tenants based on subdomain.<\/p>\n<pre><code>Rails.application.config.middleware.use &#039;Apartment::Elevators::Subdomain&#039;<\/code><\/pre>\n<p>Zum Wechsel zwischen den Mietern<\/p>\n<pre><code>Wohnung::Tenant.switch!(&#039;tenant_name&#039;)<\/code><\/pre>\n<p>All your ActiveRecord queries will be routed to the specific tenant when switch is called for.<br>\nSwitch will be in the root scope when you call with no arguments.<\/p>\n<p>Even tenant switch can be done based on the first subdomain but we need to set config in the initializer file. We can even exclude some subdomains here, such as the normal subdomain.<\/p>\n<pre><code>config.middleware.use &#039;Apartment::Elevators::FirstSubdomain&#039;<\/code><\/pre>\n<pre><code>Apartment::Elevators::FirstSubdomain.excluded_subdomains = [&#039;www&#039;]<\/code><\/pre>\n<p>We can also restrict the users not to create some domains such as www, admin. These domains will not be available for the users while they were being registered.<\/p>\n<p>Need to uncomment below config line in the apartment initializer file.<\/p>\n<pre><code>Apartment::Elevators::Subdomain.excluded_subdomains = [&quot;public&quot;, &quot;www&quot; und &quot;admin&quot; ]<\/code><\/pre>\n<p>Wir k\u00f6nnen auch basierend auf dem vollst\u00e4ndigen Host wechseln. Hier m\u00fcssen wir mithilfe der folgenden Konfigurationszeile den entsprechenden Mandantennamen im Hash finden. Wir m\u00fcssen die folgende Zeile zu Ihrer application.rb hinzuf\u00fcgen<\/p>\n<pre><code>config.middleware.use &#039;Apartment::Elevators::HostHash&#039;, {&#039;example.com&#039; =&gt; &#039;example_tenant&#039;}<\/code><\/pre>\n<p><strong>Mieter abgeben:<\/strong><\/p>\n<p>Mit dem folgenden Befehl k\u00f6nnen Mandanten gel\u00f6scht werden:<\/p>\n<pre><code>Wohnung::Tenant.drop(&#039;tenant_name&#039;)<\/code><\/pre>\n<p>Weitere Dokumentation finden Sie in der offiziellen Gem-Ressource.&nbsp;<\/p>\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-6509506b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6509506b\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container 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});\r\n      });\r\n    <\/script>\r\n  <\/div>","protected":false},"excerpt":{"rendered":"<p>Lassen Sie uns zun\u00e4chst den Unterschied zwischen Single- und Multi-Tenancy verstehen Single Tenancy: Jeder Kunde hat seine eigene Software-Instanz, seine eigene DB und sie dient nur einem Kunden. Hier kann die Software an die spezifischen Kundenanforderungen angepasst werden, da sie unabh\u00e4ngig ist. Multi-Tenancy: In diesem Fall wird eine einzelne Instanz der Softwareanwendung ...<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.railscarma.com\/de\/blog\/how-to-build-a-scalable-saas-platform-using-ruby-on-rails\/\"> <span class=\"screen-reader-text\">Wie man eine skalierbare SaaS-Plattform mit Ruby on Rails aufbaut<\/span> Weiterlesen \u00bb<\/a><\/p>","protected":false},"author":1,"featured_media":31798,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[384],"tags":[],"class_list":["post-26431","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical-articles"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Multi Tenancy by using apartment gem - RailsCarma - Ruby on Rails Development Company specializing in Offshore Development<\/title>\n<meta name=\"description\" content=\"Let us first understand the difference between single and multi-tenancy Single tenancy: Every customer is having their own software instance, own DB and\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.railscarma.com\/de\/blog\/fachartikel\/multi-tenant-vermietung-mit-apartment-gem\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Multi Tenancy by using apartment gem - 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