convert all emails to lowercase

lib/tasks/fix_email_case.rake

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+task fix_email_case: 'gabsocial:fix_email_case'
+
+namespace :gabsocial do
+  desc 'Convert emails to lowercase'
+  task :fix_email_case => :environment do
+    User.select(:id, :email).all.each do |user|
+        user.update_column :email, user.email.downcase
+        puts(user.id)
+    end
+  end
+end