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71ab41a099
When deep merging a Hash, first a duplicate is created. The duplicate only
does a shallow copy, so deeper level structures are not duplicated but
remain references.
This can lead to unexpected modifications of the original hash when a deeply
nested hash is merged with another hash, and the newly returned hash gets modified.
```
x = { a: { b: "foo" } }
y = { d: { e: "bar" } }
z = x.deep_merge(y)
# z => { a: { b: "foo" }, d: { e: "bar" } }
z[:a][:b] = "baz"
# z => { a: { b: "baz" }, d: { e: "bar" } }
# x => { a: { b: "baz" } }
```
89 lines
2.7 KiB
Markdown
89 lines
2.7 KiB
Markdown
* Fix issue in `Hash#deep_merge` where it did not properly duplicate a nested `Hash`
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*Marcel Eeken*
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* Add `expires_at` argument to `ActiveSupport::Cache` `write` and `fetch` to set a cache entry TTL as an absolute time.
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```ruby
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Rails.cache.write(key, value, expires_at: Time.now.at_end_of_hour)
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```
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*Jean Boussier*
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* Deprecate `ActiveSupport::TimeWithZone.name` so that from Rails 7.1 it will use the default implementation.
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*Andrew White*
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* Tests parallelization is now disabled when running individual files to prevent the setup overhead.
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It can still be enforced if the environment variable `PARALLEL_WORKERS` is present and set to a value greater than 1.
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*Ricardo Díaz*
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* Fix proxying keyword arguments in `ActiveSupport::CurrentAttributes`.
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*Marcin Kołodziej*
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* Add `Enumerable#maximum` and `Enumerable#minimum` to easily calculate the maximum or minimum from extracted
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elements of an enumerable.
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```ruby
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payments = [Payment.new(5), Payment.new(15), Payment.new(10)]
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payments.minimum(:price) # => 5
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payments.maximum(:price) # => 15
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```
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This also allows passing enumerables to `fresh_when` and `stale?` in Action Controller.
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See PR [#41404](https://github.com/rails/rails/pull/41404) for an example.
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*Ayrton De Craene*
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* `ActiveSupport::Cache::MemCacheStore` now accepts an explicit `nil` for its `addresses` argument.
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```ruby
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config.cache_store = :mem_cache_store, nil
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# is now equivalent to
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config.cache_store = :mem_cache_store
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# and is also equivalent to
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config.cache_store = :mem_cache_store, ENV["MEMCACHE_SERVERS"] || "localhost:11211"
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# which is the fallback behavior of Dalli
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```
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This helps those migrating from `:dalli_store`, where an explicit `nil` was permitted.
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*Michael Overmeyer*
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* Add `Enumerable#in_order_of` to put an Enumerable in a certain order by a key.
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*DHH*
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* `ActiveSupport::Inflector.camelize` behaves expected when provided a symbol `:upper` or `:lower` argument. Matches
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`String#camelize` behavior.
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*Alex Ghiculescu*
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* Raises an `ArgumentError` when the first argument of `ActiveSupport::Notification.subscribe` is
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invalid.
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*Vipul A M*
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* `HashWithIndifferentAccess#deep_transform_keys` now returns a `HashWithIndifferentAccess` instead of a `Hash`.
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*Nathaniel Woodthorpe*
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* consume dalli’s `cache_nils` configuration as `ActiveSupport::Cache`'s `skip_nil` when using `MemCacheStore`.
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*Ritikesh G*
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* add `RedisCacheStore#stats` method similar to `MemCacheStore#stats`. Calls `redis#info` internally.
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*Ritikesh G*
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Please check [6-1-stable](https://github.com/rails/rails/blob/6-1-stable/activesupport/CHANGELOG.md) for previous changes.
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