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It doesn't make sense for the subclass to implement this method, and not
have it on the parent. We can also DRY up the implementation of
`#lookup` to be defined in terms of fetch, which will give us a single
point of entry
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This reverts commit da99a2a2982d35f670ad9647463e09bfe9032b70.
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dtaniwaki/support-symbol-foreign-key-column-to-delete
Support symbol foreign key to delete
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This reverts commit 6f7910a and 52c70d4.
Query params are type cased through the same method, so this approach doesn't work.
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See comment on 6f7910a
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We don't have the check the range when the value is coming from the DB, so
override type_cast_from_database to short-circuit the extra work.
type_cast_from_database (small) 3437507.5 (±29.2%) i/s - 14223135 in 4.996973s
type_cast_from_database (large) 3158588.7 (±28.3%) i/s - 13265628 in 4.992121s
type_cast (small) 481984.8 (±14.2%) i/s - 2352012 in 5.005694s
type_cast (large) 477331.8 (±14.2%) i/s - 2332824 in 5.012365s
Comparison:
type_cast_from_database (small): 3437507.5 i/s
type_cast_from_database (large): 3158588.7 i/s - 1.09x slower
type_cast (small): 481984.8 i/s - 7.13x slower
type_cast (large): 477331.8 i/s - 7.20x slower
The difference is huge but the absolute gain is quite small. That being said
this is a hotspot and it showed up on the radar when benchmarking discourse.
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We added a comparison to "id", and call to `self.class.primary_key` a
*lot*. We also have performance hits from `&block` all over the place.
We skip the check in a new method, in order to avoid breaking the
behavior of `read_attribute`
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We don't have the check the range when the value is coming from the DB,
so override type_cast_from_database to short-circuit the extra work.
The difference is huge but the absolute gain is quite small. That being
said this is a hotspot and it showed up on the radar when benchmarking
discourse.
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This appears to be a performance hotspot, see #17655.
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Performance improvement, as well as improved code clarity
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Oh hey, we got to remove some code because of that!
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Arel handles this for us automatically. Updated tests, as BindParam is
no longer a subclass of SqlLiteral. We should remove the second argument
to substitute_at entirely, as it's no longer used
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If something causes the teardown block to not get run (errors,
interrupting test runs), we have to manually delete them, which is a
pain.
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This caused a pretty major performance regression for 4.2, as this is a
hotspot for query construction. We're still slightly slower than 4.1,
but it's much less significant.
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This class no longer has any private methods
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`default_proc` makes a hash unmarshallable, and adds unneccessary
overhead. Since we control all access to the hash, let's just handle it
in that method. This has the side effect of improving performance on
initialization (but not neccessarily on access). We'll need to profile
further once the tests are passing.
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In real usage, we give the builder a types hash with a default value of
`Type::Value.new`. This means we need to explicitly check for the key,
rather than the truthiness of the type to determine if it's a known but
uninitialized attribute
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We don't know which attributes will or won't be used, and we don't want
to create massive bottlenecks at instantiation. Rather than doing *any*
iteration over types and values, we can lazily instantiate the object.
The lazy attribute hash should not fully implement hash, or subclass
hash at any point in the future. It is not meant to be a replacement,
but instead implement its own interface which happens to overlap.
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This reverts commit 8fee923888192a658d8823b31e77ed0683dfd665.
Conflicts:
activerecord/lib/active_record/attribute_set/builder.rb
This solution sucks, and is hard to actually apply across the board.
Going to try other solutions
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Build fix when running in isolation
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`Computer` class needs to be require
See #17217 for more details
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There is a significant performance difference between the two. Closes
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also increase the version of pg required so that people will get the
GVL friendly version
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add a Table#name accessor like TableDefinition#name
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remove never called method `limited_update_conditions`
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Tiny improvement in sqlite3 adapter
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- remove unused method `supports_add_column?`
- change additional restriction method to `valid_alter_table_type?`
- fix code style
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Fix bug found when running individual tests against #17217 after merging
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Empact/association-bind-values-not-updated-on-save
Fix that a collection proxy could be cached before the save of the owner, resulting in an invalid proxy lacking the owner’s id
Conflicts:
activerecord/CHANGELOG.md
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resulting in an invalid proxy lacking the owner’s id.
Absent this fix calls like: owner.association.update_all to behave unexpectedly because they try to act on association objects where
owner_id is null.
more evidence here: https://gist.github.com/Empact/5865555
```
Active Record 3.2.13
-- create_table(:firms, {:force=>true})
-> 0.1371s
-- create_table(:clients, {:force=>true})
-> 0.0005s
1 clients. 1 expected.
1 clients updated. 1 expected.
```
```
Active Record 4.0.0
-- create_table(:firms, {:force=>true})
-> 0.1606s
-- create_table(:clients, {:force=>true})
-> 0.0004s
1 clients. 1 expected.
0 clients updated. 1 expected.
```
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Why are people assigning booleans to string columns? >_>
We unintentionally changed the behavior on Sqlite3 and PostgreSQL.
Boolean values should cast to the database's representation of true and
false. This is 't' and 'f' by default, and "1" and "0" on Mysql. The
implementation to make the connection adapter specific behavior is hacky
at best, and should be re-visted once we decide how we actually want to
separate the concerns related to things that should change based on the
database adapter.
That said, this isn't something I'd expect to change based on my
database adapter. We're storing a string, so the way the database
represents a boolean should be irrelevant. It also seems strange for us
to give booleans special behavior at all in string columns. Why is
`to_s` not sufficient? It's inconsistent and confusing. Perhaps we
should consider deprecating in the future.
Fixes #17571
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fixes #17495
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if you specify a default scope on a model, it will break caching. We
cannot predict what will happen inside the scope, so play it safe for
now. fixes #17495
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