{"id":7639,"date":"2016-02-19T16:05:45","date_gmt":"2016-02-19T16:05:45","guid":{"rendered":"https:\/\/dev.railscarma.com\/how-to-schedule-tasks-with-ruby-on-rails\/"},"modified":"2021-06-06T12:39:19","modified_gmt":"2021-06-06T12:39:19","slug":"hur-man-schemalagger-uppgifter-med-ruby-on-rails","status":"publish","type":"post","link":"https:\/\/www.railscarma.com\/sv\/blogg\/tekniska-artiklar\/hur-man-schemalagger-uppgifter-med-ruby-on-rails\/","title":{"rendered":"Hur man schemal\u00e4gger uppgifter med Ruby on Rails"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"7639\" class=\"elementor elementor-7639\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-437abbe6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"437abbe6\" 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-b7949c1\" data-id=\"b7949c1\" 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-2d539834 elementor-widget elementor-widget-text-editor\" data-id=\"2d539834\" 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<h2>Schemal\u00e4gg uppgifter med Ruby on Rails<\/h2>\n&quot;Det kan inte bli n\u00e5gon kris n\u00e4sta vecka. Mitt schema \u00e4r redan fullt.\u201d Detta fr\u00e4cka citat av Henry Kissinger f\u00f6rklarar vikten av att ha ett schema. I livet eller i tekniken \u00e4r schemal\u00e4ggning viktigt. N\u00e4r det kommer till Ruby on Rails som f\u00f6redrar konvention framf\u00f6r konfiguration \u00e4r en schemal\u00e4ggare ett m\u00e5ste. Schemal\u00e4ggning av jobb kan definieras som &quot;en beslutsprocess f\u00f6r att f\u00f6rplikta resurser mellan olika uppgifter&quot;. Det \u00e4r i grunden en funktion som g\u00f6r att man kan utf\u00f6ra rutinuppgifter som en del av en sekvens eller under f\u00f6rdefinierad tid som att utf\u00f6ra underh\u00e5llsoperationer f\u00f6r att h\u00e4mta RSS-fl\u00f6den. Dessa schemalagda jobb som utf\u00f6rs i bakgrunden utf\u00f6rs av &quot;arbetare&quot;. S\u00e5 vilka \u00e4r de b\u00e4sta s\u00e4tten att schemal\u00e4gga en uppgift i Rails-milj\u00f6? Vanligtvis kan utvecklare anv\u00e4nda applikationsspecifika cron-jobb f\u00f6r att k\u00f6ra uppgifterna, men cron-jobb \u00e4r till f\u00f6r att schemal\u00e4gga saker, inte faktiskt utf\u00f6ra dem. Det fungerar ocks\u00e5 bra p\u00e5 en enda server men om du vill skala till flera servrar s\u00e5 fungerar det inte s\u00e5 bra. De \u00e4r ocks\u00e5 sv\u00e5ra att fels\u00f6ka och \u00e4r tidskr\u00e4vande. S\u00e5, hur kan du s\u00e4kerst\u00e4lla att din schemal\u00e4ggning fungerar bra och utan n\u00e5got beroende eller f\u00f6r mycket syntax. &quot;N\u00e4r som helst&quot; kommer till din r\u00e4ddning! Kolla in hur &quot;n\u00e4r som helst&quot; p\u00e4rla kan hj\u00e4lpa dig att skapa cron-jobb med Ruby.\n<h3>Vad \u00e4r Whenever p\u00e4rla?<\/h3>\nDet anv\u00e4nds f\u00f6r att skriva och distribuera majsjobb med tydlig syntax.\n<h3>Hur installerar man det?<\/h3>\n<blockquote>gem &#039;whenever&#039;, :require =&gt; false<\/blockquote>\nEfter installationen m\u00e5ste vi skriva &quot;wheneverize .&quot; i konsolen. D\u00e5 skapas automatiskt filen schedule.rb i config-mappen. Inuti filen schedule.rb kan vi schemal\u00e4gga funktionen baserat p\u00e5 tid, datum, m\u00e5nad, etc.. Ex:\n<blockquote>var 1:e dag, :at =&gt; &#039;10:00&#039; g\u00f6r rake &quot;sow:events_reminder_mail&quot;, :environment =&gt; :development end<\/blockquote>\nInnan du schemal\u00e4gger \u00e5tg\u00e4rden Inuti lib-mappen m\u00e5ste vi skapa en uppgiftsmapp, i aktivitetsmappen kan vi skapa rake-fil. Det \u00e4r bara det rake-filnamnet som vi beh\u00f6ver anv\u00e4nda f\u00f6r att schemal\u00e4gga \u00e5tg\u00e4rden\n<blockquote>rake \u201csow:events_reminder_mail\u201d, \u2014\u2013&gt; rake filnamn med uppgift Namn :environment =&gt; :utveckling \u2014\u2014\u2013&gt; Vi m\u00e5ste specificera milj\u00f6n<\/blockquote>\nInuti rake-filen kan vi ange villkoret och anv\u00e4nda User Mailier f\u00f6r att skicka e-postmeddelandet. Den User Malier kommer att skicka e-postmeddelandet baserat p\u00e5 schemal\u00e4ggning av tid, datum, m\u00e5nad, etc.. Ex:()\n<blockquote>desc &quot;Events inaktiva&quot; uppgift :events_inactive =&gt; :environment do @events = Event.where(:end_date=&gt;Date.today-1.days) @events.each do |event| event.update_attributes(:published_status=&gt;false,:inactive_dat e=&gt;Date.today) end end<\/blockquote>\nReferens: https:\/\/github.com\/javan\/whenever\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-2c765912 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2c765912\" 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-24322977\" data-id=\"24322977\" 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-322ff6f6 elementor-widget elementor-widget-heading\" data-id=\"322ff6f6\" 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\">Prenumerera f\u00f6r de senaste uppdateringarna<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4f2bf204 elementor-widget elementor-widget-shortcode\" data-id=\"4f2bf204\" 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                        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<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=\"lastare\"><\/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=\"297ab9f1f5\">\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-postadress\">\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=\"namn\">\r\n<\/p>\r\n<p>\r\n    <input type=\"submit\" id=\"invisible\" class=\"sib-default-btn\" value=\"Prenumerera\">\r\n<\/p>\t\t\t\t<\/div>\n\t\t\t<input type=\"hidden\" name=\"trp-form-language\" value=\"sv\"\/><\/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\">relaterade inl\u00e4gg<\/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 Gem\" 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Mitt schema \u00e4r redan fullt.\" Detta fr\u00e4cka citat av Henry Kissinger f\u00f6rklarar vikten av att ha ett schema. I livet eller inom teknik \u00e4r schemal\u00e4ggning viktigt. N\u00e4r det g\u00e4ller Ruby on Rails som f\u00f6redrar konvention framf\u00f6r konfiguration, \u00e4r en schemal\u00e4ggare en ...<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.railscarma.com\/sv\/blogg\/third-party-api-integration-solutions-in-ruby-on-rails\/\"> <span class=\"screen-reader-text\">L\u00f6sningar f\u00f6r API-integration fr\u00e5n tredje part i Ruby on Rails<\/span> L\u00e4s mer \u00bb<\/a><\/p>","protected":false},"author":1,"featured_media":31955,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[384],"tags":[382],"class_list":["post-7639","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>How to Schedule Tasks With Ruby on Rails - RailsCarma - Ruby on Rails Development Company specializing in Offshore Development<\/title>\n<meta name=\"description\" content=\"Scheduling job can be defined as \u201ca decision process of committing resources between varieties of tasks\" \/>\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\/sv\/blogg\/tekniska-artiklar\/hur-man-schemalagger-uppgifter-med-ruby-on-rails\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Schedule Tasks With Ruby on Rails - 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