Hi All!
I just upgraded to Rails 5.0.0.beta3 and everything seemed to be going
well until I noticed a minor annoyance.
I think I saw the same thing with beta2 but I was in the middle of
learning coffeescript so I was not paying attention.
It is not harmful, just strange.
When I do rails generate hobo:migration, the migration itself happens
correctly, but it seems to be updating all tables that have columns with
default values, as well.
For example, I added one field to a "Setup" table and ran
hobo:migration. The terminal output is:
Running via Spring preloader in process 13666
---------- Up Migration ----------
change_column :appointments, :completed, :boolean, :default => false
change_column :appointments, :cancelled, :boolean, :default => false
change_column :properties, :mon_start, :float, :default => 0
change_column :properties, :mon_end, :float, :default => 0
change_column :properties, :tue_start, :float, :default => 0
change_column :properties, :tue_end, :float, :default => 0
change_column :properties, :wed_start, :float, :default => 0
change_column :properties, :wed_end, :float, :default => 0
change_column :properties, :thu_start, :float, :default => 0
change_column :properties, :thu_end, :float, :default => 0
change_column :properties, :fri_start, :float, :default => 0
change_column :properties, :fri_end, :float, :default => 0
change_column :properties, :sat_start, :float, :default => 0
change_column :properties, :sat_end, :float, :default => 0
change_column :properties, :sun_start, :float, :default => 0
change_column :properties, :sun_end, :float, :default => 0
add_column :setups, :hours_in_advance, :integer #### the only change I made.
change_column :users, :is_admin, :boolean, :default => false
----------------------------------
---------- Down Migration --------
change_column :appointments, :completed, :boolean, default: false
change_column :appointments, :cancelled, :boolean, default: false
change_column :properties, :mon_start, :float, default: 0.0
change_column :properties, :mon_end, :float, default: 0.0
change_column :properties, :tue_start, :float, default: 0.0
change_column :properties, :tue_end, :float, default: 0.0
change_column :properties, :wed_start, :float, default: 0.0
change_column :properties, :wed_end, :float, default: 0.0
change_column :properties, :thu_start, :float, default: 0.0
change_column :properties, :thu_end, :float, default: 0.0
change_column :properties, :fri_start, :float, default: 0.0
change_column :properties, :fri_end, :float, default: 0.0
change_column :properties, :sat_start, :float, default: 0.0
change_column :properties, :sat_end, :float, default: 0.0
change_column :properties, :sun_start, :float, default: 0.0
change_column :properties, :sun_end, :float, default: 0.0
remove_column :setups, :hours_in_advance
change_column :users, :is_admin, :boolean, default: false
----------------------------------
What now: [g]enerate migration, generate and [m]igrate now or [c]ancel? m
=> "m"
Migration filename: [<enter>=hobo_migration_10|<custom_name>]:
=> "hobo_migration_10"
create db/migrate/20160311192034_hobo_migration_10.rb
rake db:migrate
== 20160311192034 HoboMigration10: migrating
==================================
-- change_column(:appointments, :completed, :boolean, {:default=>false})
-> 0.0093s
-- change_column(:appointments, :cancelled, :boolean, {:default=>false})
-> 0.0045s
-- change_column(:properties, :mon_start, :float, {:default=>0})
-> 0.0067s
-- change_column(:properties, :mon_end, :float, {:default=>0})
-> 0.0062s
-- change_column(:properties, :tue_start, :float, {:default=>0})
-> 0.0063s
-- change_column(:properties, :tue_end, :float, {:default=>0})
-> 0.0068s
-- change_column(:properties, :wed_start, :float, {:default=>0})
-> 0.0060s
-- change_column(:properties, :wed_end, :float, {:default=>0})
-> 0.0064s
-- change_column(:properties, :thu_start, :float, {:default=>0})
-> 0.0060s
-- change_column(:properties, :thu_end, :float, {:default=>0})
-> 0.0061s
-- change_column(:properties, :fri_start, :float, {:default=>0})
-> 0.0065s
-- change_column(:properties, :fri_end, :float, {:default=>0})
-> 0.0076s
-- change_column(:properties, :sat_start, :float, {:default=>0})
-> 0.0089s
-- change_column(:properties, :sat_end, :float, {:default=>0})
-> 0.0090s
-- change_column(:properties, :sun_start, :float, {:default=>0})
-> 0.0079s
-- change_column(:properties, :sun_end, :float, {:default=>0})
-> 0.0101s
-- add_column(:setups, :hours_in_advance, :integer)
-> 0.0025s
-- change_column(:users, :is_admin, :boolean, {:default=>false})
-> 0.0129s
== 20160311192034 HoboMigration10: migrated (0.1334s)
=========================
I searched all of the models in the app, and the fields shown above are
all the fields with default values. None are missing.
I am using PostgreSQL 9.3.4 if that makes a difference.
As I said, this is a minor annoyance, but I always worry when things
that don't have to be changed are changed. Just one more thing that can
go wrong .... go wrong .... go..... wrdna..... NO CARRIER ;)
Don Ziesig
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