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Add the update_only option to accepts_nested_attributes_for attributes writers #346

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Add the update_only option to accepts_nested_attributes_for attributes writers #346

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19 changes: 19 additions & 0 deletions README.adoc
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Original file line number Diff line number Diff line change
Expand Up @@ -814,6 +814,25 @@ class Post < ApplicationRecord
end
----

=== `accepts_nested_attributes_for` Update Only Option [[accepts_nested_attributes_for-update_only-option]]

Define the `update_only` option to the `accepts_nested_attributes_for` attributes writers.

[source,ruby]
----
# bad
class Member < ApplicationRecord
has_one :avatar
accepts_nested_attributes_for :avatar
end

# good
class Member < ApplicationRecord
has_one :avatar
accepts_nested_attributes_for :avatar, update_only: true
end
----

=== `save!` [[save-bang]]

When persisting AR objects always use the exception raising bang! method or handle the method return value.
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