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Diffstat (limited to 'activerecord/CHANGELOG.md')
| -rw-r--r-- | activerecord/CHANGELOG.md | 151 |
1 files changed, 147 insertions, 4 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md index e5312d7d7c..162f338087 100644 --- a/activerecord/CHANGELOG.md +++ b/activerecord/CHANGELOG.md @@ -1,3 +1,146 @@ +* `find_each` now returns an `Enumerator` when called without a block, so that it + can be chained with other `Enumerable` methods. + + *Ben Woosley* + +* `ActiveRecord::Result.each` now returns an `Enumerator` when called without + a block, so that it can be chained with other `Enumerable` methods. + + *Ben Woosley* + +* Flatten merged join_values before building the joins. + + While joining_values special treatment is given to string values. + By flattening the array it ensures that string values are detected + as strings and not arrays. + + Fixes #10669. + + *Neeraj Singh and iwiznia* + +* Do not load all child records for inverse case. + + currently `post.comments.find(Comment.first.id)` would load all + comments for the given post to set the inverse association. + + This has a huge performance penalty. Because if post has 100k + records and all these 100k records would be loaded in memory + even though the comment id was supplied. + + Fix is to use in-memory records only if loaded? is true. Otherwise + load the records using full sql. + + Fixes #10509. + + *Neeraj Singh* + +* `inspect` on Active Record model classes does not initiate a + new connection. This means that calling `inspect`, when the + database is missing, will no longer raise an exception. + Fixes #10936. + + Example: + + Author.inspect # => "Author(no database connection)" + + *Yves Senn* + +* Handle single quotes in PostgreSQL default column values. + Fixes #10881. + + *Dylan Markow* + +* Log the sql that is actually sent to the database. + + If I have a query that produces sql + `WHERE "users"."name" = 'a b'` then in the log all the + whitespace is being squeezed. So the sql that is printed in the + log is `WHERE "users"."name" = 'a b'`. + + Do not squeeze whitespace out of sql queries. Fixes #10982. + + *Neeraj Singh* + +* Fixture setup does no longer depend on `ActiveRecord::Base.configurations`. + This is relevant when `ENV["DATABASE_URL"]` is used in place of a `database.yml`. + + *Yves Senn* + +* Fix mysql2 adapter raises the correct exception when executing a query on a + closed connection. + + *Yves Senn* + +* Ambiguous reflections are on :through relationships are no longer supported. + For example, you need to change this: + + class Author < ActiveRecord::Base + has_many :posts + has_many :taggings, :through => :posts + end + + class Post < ActiveRecord::Base + has_one :tagging + has_many :taggings + end + + class Tagging < ActiveRecord::Base + end + + To this: + + class Author < ActiveRecord::Base + has_many :posts + has_many :taggings, :through => :posts, :source => :tagging + end + + class Post < ActiveRecord::Base + has_one :tagging + has_many :taggings + end + + class Tagging < ActiveRecord::Base + end + + *Aaron Peterson* + +* Remove column restrictions for `count`, let the database raise if the SQL is + invalid. The previous behavior was untested and surprising for the user. + Fixes #5554. + + Example: + + User.select("name, username").count + # Before => SELECT count(*) FROM users + # After => ActiveRecord::StatementInvalid + + # you can still use `count(:all)` to perform a query unrelated to the + # selected columns + User.select("name, username").count(:all) # => SELECT count(*) FROM users + + *Yves Senn* + +* Rails now automatically detects inverse associations. If you do not set the + `:inverse_of` option on the association, then Active Record will guess the + inverse association based on heuristics. + + Note that automatic inverse detection only works on `has_many`, `has_one`, + and `belongs_to` associations. Extra options on the associations will + also prevent the association's inverse from being found automatically. + + The automatic guessing of the inverse association uses a heuristic based + on the name of the class, so it may not work for all associations, + especially the ones with non-standard names. + + You can turn off the automatic detection of inverse associations by setting + the `:inverse_of` option to `false` like so: + + class Taggable < ActiveRecord::Base + belongs_to :tag, inverse_of: false + end + + *John Wang* + * Fix `add_column` with `array` option when using PostgreSQL. Fixes #10432 *Adam Anderson* @@ -19,7 +162,7 @@ *Yves Senn* -* Fix bug where tiny types are incorectly coerced as booleand when the length is more than 1. +* Fix bug where tiny types are incorrectly coerced as boolean when the length is more than 1. Fixes #10620. @@ -32,7 +175,7 @@ * Deprecate `ConnectionAdapters::SchemaStatements#distinct`, as it is no longer used by internals. - *Ben Woosley# + *Ben Woosley* * Fix pending migrations error when loading schema and `ActiveRecord::Base.table_name_prefix` is not blank. @@ -102,8 +245,8 @@ *Olek Janiszewski* -* fixes bug introduced by #3329. Now, when autosaving associations, - deletions happen before inserts and saves. This prevents a 'duplicate +* fixes bug introduced by #3329. Now, when autosaving associations, + deletions happen before inserts and saves. This prevents a 'duplicate unique value' database error that would occur if a record being created had the same value on a unique indexed field as that of a record being destroyed. |