{"id":361,"date":"2016-07-26T22:23:22","date_gmt":"2016-07-26T22:23:22","guid":{"rendered":"https:\/\/www.tech.shinynewthings.com\/?p=361"},"modified":"2016-07-26T22:26:20","modified_gmt":"2016-07-26T22:26:20","slug":"rails-ruby-check-db-for-table-or-column","status":"publish","type":"post","link":"https:\/\/www.tech.shinynewthings.com\/?p=361","title":{"rendered":"Rails \/ Ruby &#8211; Check db for table or column"},"content":{"rendered":"<p><code><\/p>\n<h1>Does table exist<\/h1>\n<p>def self.table_exists?(name)<br \/>\n  ActiveRecord::Base.connection.tables.include?(name)<br \/>\nend<\/p>\n<h1>Does column exist<\/h1>\n<p>if table_exists?(:profile) &amp;&amp; !TableName.column_names.include?(\"url\")<br \/>\n  add_column :profile, :url, :string<br \/>\nend<br \/>\n<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Does table exist def self.table_exists?(name) ActiveRecord::Base.connection.tables.include?(name) end Does column exist if table_exists?(:profile) &amp;&amp; !TableName.column_names.include?(&#8220;url&#8221;) add_column :profile, :url, :string end<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-361","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.tech.shinynewthings.com\/index.php?rest_route=\/wp\/v2\/posts\/361","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tech.shinynewthings.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tech.shinynewthings.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tech.shinynewthings.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tech.shinynewthings.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=361"}],"version-history":[{"count":7,"href":"https:\/\/www.tech.shinynewthings.com\/index.php?rest_route=\/wp\/v2\/posts\/361\/revisions"}],"predecessor-version":[{"id":368,"href":"https:\/\/www.tech.shinynewthings.com\/index.php?rest_route=\/wp\/v2\/posts\/361\/revisions\/368"}],"wp:attachment":[{"href":"https:\/\/www.tech.shinynewthings.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=361"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tech.shinynewthings.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=361"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tech.shinynewthings.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=361"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}