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Updating Associations::Preloader docs
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Much of the previous documentation introduced features new in 2011. This
commit refreshes it to provide clearer code examples and spends more
time describing the normal case (preloaded associations) and less time
describing the fallback.
[ci skip]
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to drop sequences at the same time each tables dropped for Oracle
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/cc @yahonda
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Closes #10247.
The same goes for tables with an "id" column but without primary key constraint.
Reading from the view works without configuration. If you have an updateable view
you need to use `self.primary_key = ''`.
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SQLite3Adapter now checks for views in table_exists? fixes: 14041
Conflicts:
activerecord/CHANGELOG.md
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`AbstractAdapter#supports_views?` defaults to `false` so we have to turn it on
in adapter subclasses. Currently the flag only controls test execution.
/cc @yahonda
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Closes #16684.
This is achieved by always generating `GeneratedAssociationMethods` when
`ActiveRecord::Base` is subclassed. When some of the included modules
of `ActiveRecord::Base` were reordered this behavior was broken as
`Core#initialize_generated_modules` was no longer called. Meaning that
the module was generated on first access.
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disable migrations logging while running test cases for AR schema tests
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Fix query with nested array in Active Record
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`User.where(id: [[1,2],3])` was equal to `User.where(id:[1, 2, 3])`
in Rails 4.1.x but because of some refactoring in Arel this stopped
working in 4.2.0. This fixes it in Rails.
[Dan Olson & Cristian Bica]
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exclusively
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* Add private method primary_key_for, which more clearly shows that the
expected return value is nil when a primary key is not found.
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* Consistent whitespace
* Remove unnecessary parentheses
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This fixes <"SQLite3::SQLException: no such column: legacy_things.person_id: SELECT \"legacy_things\".* FROM \"legacy_things\" WHERE \"legacy_things\".\"person_id\" = ?">
in OptimisticLockingTest#test_lock_destroy
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[Postgresql tests] Added enable_extension! to helper
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Callback order in Active Record objects are important. Users should not
define callbacks before the association definition or surprising
behaviours like the described at #3798 will happen. This callback order
dependency is documented at https://github.com/rails/rails/blob/31bfcdc77ca0d8cec9b5fe513bdc6f05814dd4f1/activerecord/lib/active_record/associations.rb#L1222-1227.
This reverts #15728.
Fixes #16620.
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This reverts commits e969c928463e329fd6529ac59cad96385c538ffb and
bd2b3fbe54e750ba97469a7896e8d143d6dfd465.
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This is cased by 03118bc + 9b5d603. The first commit referenced the undefined
local variable `column` when it should be using `reflection.type` as the lookup
key. The second commit changed `build_arel` to not modify the `bind_values` in-
place so we need to combine the arel's `bind_values` with the relation's when
building the SQL.
Fixes #16591
Related #15821 / #15892 / 7aeca50
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Skip StatementCache for eager loaded associations
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Eagerly loaded collection and singular associations are ignored by the StatementCache, which causes errors when the queries they generate reference columns that were not eagerly loaded.
This commit skips the creation of the StatementCache as a fix for these scenarios.
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eileencodes/refactor-scope_chain-on-through-refelction-to-eliminate-branch-in-eval_scope
Always add lambda to scope chain to eliminate branch in eval_scope
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We convert all other scopes to lambda's so it makes sense that we should
always returns a lambda on a ThroughReflection as well. This eliminates
the need to check if the scope is a Relation.
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Remove chain from parameters, it's no longer needed since chain and i
are being passed via next_reflection
Change name of `reflection` to `owner_reflection` because of shadow
variable warning. The last reflection will always be the owner.
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Added a few more methods on Module/Class to the dangerous class methods
blacklist. (Technically, allocate and new are already protected currently because
we happen to redefine them in the current implantation.)
Closes #16792
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Warning looked like this:
```
/Users/senny/Projects/rails/activerecord/lib/active_record/associations/association_scope.rb:142: warning: shadowing outer local variable - reflection
```
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[Joshua Cody & Yves Senn]
Closes #16757.
Prior to this patch schema loading rake tasks had the potential to leak a
connection to a different database. This had side-effects when rake tasks
operating on the current connection (like `db:seed`) were chained.
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Move column option handling to new_column_definition
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TableDefinition#column is not called from `add_column`.
Use TableDefinition#new_column_definition for column option handling.
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Since 'drop table if exists' statement does not always work with
some databases such as Oracle.
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eileencodes/refactor-add_constraints-complex-loop-conditional
Refactor add_constraints complex loop conditional
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This breaks the two branches of the `if reflection.last` and `else`
to clearer see where the two methods can be refactored. Eventually
we hope to remove the need for these separated methods altogether.
Move the first branch outside the loop
This code doesn't need to be in the loop because it it always affects
the last chain. `get_bind_values` and `add_constraints` must match
in this context because `get_bind_values` is the caching of `add_constraints`
Use each_cons to remove need for `chain[i + 1]`
The `chain[i + 1]` is confusing because it's not immediately obvious
what it's trying to achieve. The use of `each_cons` makes it clear
we need to get the `next_reflection`.
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Method .strip_heredoc is defined in
active_support/core_ext/string/strip.rb so we need to require it.
[fixes #16677]
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We're seeing too many failures to believe otherwise.
This reverts commits bc116a55ca3dd9f63a1f1ca7ade3623885adcc57,
cbde413df3839e06dd14e3c220e9800af91e83ab,
bf0a67931dd8e58f6f878b9510ae818ae1f29a3a, and
2440933fe2c27b27bcafcd9019717800db2641aa.
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use self instead of #read_attribute
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