| Commit message (Collapse) | Author | Age | Files | Lines |
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In 04ac5655be91f49cd4dfe2838df96213502fb274 I assumed that we would
never want to pass the "table_name.column_name" form to where with a
symbol. However, in Ruby 2.2 and later, you can quote symbols using the
new hash syntax, so it's a semi-reasonable thing to do if we want to
support the dot notation (which I'd rather deprecate, but that would be
too painful of a migration).
Instead we've changed the definition of "this is a table name with a
dot" to when the value associated is a hash. It would make very little
sense to write `where("table_name.column_name": { foo: :bar })` in any
scenario (other than equality for a JSON column which we don't support
through `where` in this way).
Close #24514.
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This issue occured because associations now call `where` directly, and a
dot in the key name for `where` means nested tables. For this fix, we
now pass the table name as a symbol, and do not attempt to expand
symbols containing a dot.
This is a temporary fix. I do not think we should support table names
containing a dot, as it has a special meaning in most backends, as well
as most APIs that involve table names. This commit does not include a
test, as I am going to deprecate table names containing dots in the
following commit.
Fixes #24367
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unscope->where->order
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The changes introduced to through associations in c80487eb were quite
interesting. Changing `relation.merge!(scope)` to `relation =
relation.merge(scope)` should in theory never cause any changes in
behavior. The subtle breakage led to a surprising conclusion.
The old code wasn't doing anything! Since `merge!` calls
`instance_exec` when given a proc, and most scopes will look something
like `has_many :foos, -> { where(foo: :bar) }`, if we're not capturing
the return value, it's a no-op. However, removing the `merge` causes
`unscope` to break.
While we're merging in the rest of the chain elsewhere, we were never
merging in `unscope` values, causing a breakage on associations where a
default scope was being unscoped in an association scope (yuk!). This is
subtly related to #20722, since it appears we were previously relying on
this mutability.
Fixes #20721.
Fixes #20727.
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This removes the need to duplicate much of the logic in `WhereClause`
and `PredicateBuilder`, simplifies the code, removes the need for the
connection adapter to be continuously passed around, and removes one
place that cares about the internal representation of `bind_values`
Part of the larger refactoring to change how binds are represented
internally
[Sean Griffin & anthonynavarre]
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Bind values are no longer a thing, so this is unnecessary.
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Add missing nodoc's
Change `assoc_klass` argument name to `association_klass`
Change `prev_reflection` argument name to `previous_reflection`
Change `prev` to `previous_reflection` in `#get_chain`
Switch use of `refl` and `reflection` in `#get_chain` so main parameter
is not abbreviated.
Add missing space in `#add_constraints`
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This moves the `#type_caster` from the `aliased_table_for` and into the
initialize of the `alias_tracker`.
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`yield` instead of relying on checking if the reflection is equal to the
`chain_head`.
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Instead of initializing an empty connection use the base table name
instead. Split up and refactor `#create` to be 2 methods `#create` and
`#create_with_joins`. Removes the need to update the count by 1 on
initialzing a JoinDependency.
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This moves `alias_candidate` out of the `ReflectionProxy` and into the
`AbstractReflection` so it is shared by all reflections. Change
`alias_name` to a method and and remove assignment in `#get_chain`.
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After the refactorings we're only using the connection and not the alias
tracker anymore. This builds on commit 18019.
Reuse the already available `@connection` to reduce the surface area of
the alias tracker's API. We can then remove the `attr_reader` because
the connection is already available.
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This makes the `#alias_name` more functional.
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Move `RuntimeReflection` and `PolymorphicReflect` into Reflection. This
allows the methods to inherit from `ThroughReflection` and DRY up the
methods by removing duplicates.
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The linked list lets us use a loop in `#add_constraints` and completely
remove the need for indexing the iteration becasue we have access to the
next item in the chain.
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By concatnating the `ReflectionProxy` with the `chain` we remove
the need for `#construct_tables` because the `chain` is now in the
correct order (order of the chain DOES matter).
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Putting the `#alias_name` into ReflectionProxy means we don't have to
cache the `#alias_name` globally anymore - it's not cached per query.
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`is_first_chain`, `items` and `klass` are no longer beneficial and can
be called directly instead of via their assignments - because they are
each only used once.
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Move method structure into reflection classes for accessibly on each
reflection rather than by traversing the chain.
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The `RuntimeReflection` class allows the reflection to be accessed at
runtime - then we always know which reflection we are accessing in the
chain. The `#get_chain` method then allows us to recursively access the
chain through the `RuntimeReflection`.
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`#constraints` builds a flattened version of `scope_chain` to
allow it to be accessible without requiring an index when iterating
over the `scope_chain`
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Because we're only using the `connection` so passing the entire tracker
isn't unnecessary.
Eventually only the `connection` will be passed to `add_constraints`
with later refactoring but curretly that's not possible because of
`construct_tables` method.
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Oh hey, we got to remove some code because of that!
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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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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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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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The instance var is already saved as a string in the initialization
method of AssociationReflection.
See https://github.com/rails/rails/blob/master/activerecord/lib/active_record/reflection.rb#L273
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add_constraints is complicated and difficult to read. This is the
beginning of a long process of refactoring this code. First step:
moved the join keys out of AssociationScope and into reflection.
We then don't need to call `reflection` because now reflection is
`self`.
`foreign_key` must be named something else because reflection already has a
`foreign_key` method and when passed into `JoinKeys` it was getting the
wrong assignment. `reflection_foreign_key` seemed to be an appropriate name.
I also named `key` `reflection_key` to match `reflection_foreign_key`.
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Fix polymorphic to check for `options[:polymorphic]` instead of
`options.key? :polymorphic` and then reuse the method `polymorphic?`
method instead of constantly checking the same `options[:polymorphic]`.
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Added #join_id_for(owner) to reflection to avoid accessing the source_macro
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SQL statements for querying associations are now cached
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* master: (311 commits)
Add a missing changelog entry for #13981 and #14035
Revert "Fixed plugin_generator test"
implements new option :month_format_string for date select helpers [Closes #13618]
add factory methods for empty alias trackers
guarantee a list in the alias tracker so we can remove a conditional
stop exposing table_joins
make most parameters to the AliasTracker required
make a singleton for AssociationScope
pass the association and connection to the scope method
pass the tracker down the stack and construct it in the scope method
clean up add_constraints signature
remove the reflection delegate
remove klass delegator
remove railties changes. fixes #14054
remove chain delegate
remove scope_chain delegate
Add verb to sanitization note
fix path shown in mailer's templates
updated Travis build status image url
fix guide active_support_core_extensions. add Note to String#indent [ci skip]
...
Conflicts:
activerecord/lib/active_record/associations/join_dependency.rb
activerecord/test/cases/associations/association_scope_test.rb
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If we know the alias tracker is empty, we can create one that doesn't
use a hash with default block for counting.
ActiveRecord::Base.establish_connection(adapter: 'sqlite3',
database: ':memory:')
ActiveRecord::Schema.define do
create_table :posts, force: true do |t|
t.integer :comments_count
end
create_table :comments, force: true do |t|
t.integer :post_id
end
end
class Post < ActiveRecord::Base; has_many :comments; end
class Comment < ActiveRecord::Base; belongs_to :post, counter_cache: true; end
10.times { Comment.create!(post: Post.create!) }
record = Post.first
association_name = :comments
Benchmark.ips do |x|
reflection = record.class.reflect_on_association(association_name)
association = reflection.association_class.new(record, reflection)
x.report('assoc') do
reflection.association_class.new(record, reflection)
end
x.report('reader') do
association.reader;nil
end
x.report('combined') do
reflection.association_class.new(record, reflection).reader;nil
end
end
[aaron@higgins rails (tracker)]$ TEST=ips bundle exec ruby ../1bb5456b5e035343df9d/gistfile1.rb
-- create_table(:posts, {:force=>true})
-> 0.0062s
-- create_table(:comments, {:force=>true})
-> 0.0003s
Calculating -------------------------------------
assoc 833 i/100ms
reader 28703 i/100ms
combined 839 i/100ms
-------------------------------------------------
assoc 9010.3 (±3.8%) i/s - 44982 in 5.000022s
reader 3214523.4 (±5.5%) i/s - 16016274 in 5.001136s
combined 8841.0 (±5.8%) i/s - 44467 in 5.049269s
[aaron@higgins rails (tracker)]$ TEST=ips bundle exec ruby ../1bb5456b5e035343df9d/gistfile1.rb
-- create_table(:posts, {:force=>true})
-> 0.0060s
-- create_table(:comments, {:force=>true})
-> 0.0003s
Calculating -------------------------------------
assoc 888 i/100ms
reader 29217 i/100ms
combined 900 i/100ms
-------------------------------------------------
assoc 9674.3 (±3.3%) i/s - 48840 in 5.054022s
reader 2988474.8 (±6.9%) i/s - 14842236 in 4.998230s
combined 9674.0 (±3.1%) i/s - 48600 in 5.028694s
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AssociationScope no longer maintains state, so we're safe to keep a
singleton and save on GC time
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