diff options
| -rw-r--r-- | activesupport/lib/active_support/callbacks.rb | 6 | ||||
| -rw-r--r-- | guides/source/active_record_migrations.md | 13 |
2 files changed, 12 insertions, 7 deletions
diff --git a/activesupport/lib/active_support/callbacks.rb b/activesupport/lib/active_support/callbacks.rb index f35e1f5098..fefba5b0fd 100644 --- a/activesupport/lib/active_support/callbacks.rb +++ b/activesupport/lib/active_support/callbacks.rb @@ -741,10 +741,10 @@ module ActiveSupport # callback chain, preventing following before and around callbacks from # being called and the event from being triggered. # This should be a lambda to be executed. - # The current object and the return result of the callback will be called - # with the lambda. + # The current object and the result lambda of the callback will be provided + # to the terminator lambda. # - # define_callbacks :validate, terminator: ->(target, result) { result == false } + # define_callbacks :validate, terminator: ->(target, result_lambda) { result_lambda.call == false } # # In this example, if any before validate callbacks returns +false+, # any successive before and around callback is not executed. diff --git a/guides/source/active_record_migrations.md b/guides/source/active_record_migrations.md index 980dfe6953..4e5902fb3d 100644 --- a/guides/source/active_record_migrations.md +++ b/guides/source/active_record_migrations.md @@ -1004,7 +1004,10 @@ such features, the `execute` method can be used to execute arbitrary SQL. Migrations and Seed Data ------------------------ -Some people use migrations to add data to the database: +The main purpose of Rails' migration feature is to issue commands that modify the +schema using a consistent process. Migrations can also be used +to add or modify data. This is useful in an existing database that can't be destroyed +and recreated, such as a production database. ```ruby class AddInitialProducts < ActiveRecord::Migration @@ -1020,9 +1023,11 @@ class AddInitialProducts < ActiveRecord::Migration end ``` -However, Rails has a 'seeds' feature that should be used for seeding a database -with initial data. It's a really simple feature: just fill up `db/seeds.rb` -with some Ruby code, and run `rake db:seed`: +To add initial data after a database is created, Rails has a built-in +'seeds' feature that makes the process quick and easy. This is especially +useful when reloading the database frequently in development and test environments. +It's easy to get started with this feature: just fill up `db/seeds.rb` with some +Ruby code, and run `rake db:seed`: ```ruby 5.times do |i| |