Rails 5.2 fetch_values for HashWithIndifferentAccess
Ruby 2.3 addedfetch_values method to hash. By using fetch_values we are able to get values for multiple keys in a hash. capitals = { usa: "Washington DC", china: "Beijing", india: "New Delhi", australia: "Canberra" }capitals.fetch_values(:usa, :india)#=> ["Washington DC", "New Delhi"]capitals.fetch_values(:usa, :spain) { |country| "N/A" }#=> ["Washington DC", "N/A"]Rails 5.2 introduces method fetc
Rails 5 adds finish option in find_in_batches
In Rails 4.x we had start option in find_in_batches method. Person.find_in_batches(start: 1000, batch_size: 2000) do |group| group.each { |person| person.party_all_night! }endThe above code provides batches of Person starting from record whose value ofprimary key is equal to 1000. There is no end value for primary key. That means in the above case all therecords that have primary key value greater
Rails 5 introduces country_zones helper method
Before Rails 5, we could fetch all time zones for US by using us_zones methodas follows. > puts ActiveSupport::TimeZone.us_zones.map(&:to_s)(GMT-10:00) Hawaii(GMT-09:00) Alaska(GMT-08:00) Pacific Time (US & Canada)(GMT-07:00) Arizona(GMT-07:00) Mountain Time (US & Canada)(GMT-06:00) Central Time (US & Canada)(GMT-05:00) Eastern Time (US & Canada)(GMT-05:00) Indiana (East)Such functionality of gett
Rails 5 Renaming transactional fixtures to tests
In Rails 4.x we have transactional fixtures that wrap each test in a databasetransaction. This transaction rollbacks all the changes at the end of the test.It means the state of the database, before the test is same as after the test isdone. By default this functionality is enabled. We can choose to disable it in a testcase class by setting the class attribute use_transactional_fixtures tofalse cl
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Rails 5.2 adds expiry option for signed and encrypted cookies and adds relative expiry time | BigBinary Blog
