| Commit message (Collapse) | Author | Age | Files | Lines |
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This was passing prior to 20b177b78ef5d21c8cc255f0376f6b2e948de234,
because we were not properly applying our contract that
`model.attr == model.tap(&:save).reload.attr` for this case. Now that
that has been resolved, this test is invalid on some adapters
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When a time object was assigned to a datetime column, the decorator for
TZ aware attributes wouldn't call super, so when using a database
without support for subsecond precision, the nanosecond would not be
truncated, leading to the value being marked as changed.
Interestingly, this also shows our new implementation of dirty checking
to be more robust than the old one (with less code and better
performance! :tada:!!!)
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They didn't help.
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Nobody can replicate locally and the failure makes no sense
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When I removed the call to `super` to avoid the setting of
`@previous_changes`, I forgot to duplicate the other part of that
behavior, which led to failing tests
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The biggest source of the performance regression in these methods
occurred because dirty tracking required eagerly materializing and type
casting the assigned values. In the previous commits, I've changed dirty
tracking to perform the comparisons lazily. However, all of this is moot
when calling `save`, since `changes_applied` will be called, which just
ends up eagerly materializing everything, anyway. With the new mutation
tracker, it's easy to just compare the previous two hashes in the same
lazy fashion.
We will not have aliasing issues with this setup, which is proven by the
fact that we're able to detect nested mutation.
Before:
User.create! 2.007k (± 7.1%) i/s - 10.098k
After:
User.create! 2.557k (± 3.5%) i/s - 12.789k
Fixes #19859
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In order to improve the performance of dirty checking, we're going to
need to duplicate all of the `previous_` methods in Active Model.
However, these methods are basically the same as their non-previous
counterparts, but comparing `@original_attributes` to
`@previous_original_attributes` instead of `@attributes` and
`@original_attributes`. This will help reduce that duplication.
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This moves a bit more of the logic required for dirty checking into the
attribute objects. I had hoped to remove the `with_value_from_database`
stuff, but unfortunately just calling `dup` on the attribute objects
isn't enough, since the values might contain deeply nested data
structures. I think this can be cleaned up further.
This makes most dirty checking become lazy, and reduces the number of
object allocations and amount of CPU time when assigning a value. This
opens the door (but doesn't quite finish) to improving the performance
of writes to a place comparable to 4.1
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Follow-up to #21720.
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ActiveRecord: use association's `unscope` when preloading
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Fix a bug with returning_disabled when using the postgresql adapter
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The returning_disabled configuration option is required to make postgresql partitioning triggers work. This commit fixes a bug where an invalid query would be made in cases where returning_disabled was true and objects were created with no attributes defined.
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Fix ActiveRecord `instance_method_already_implemented` docs [ci skip]
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It appears that as of version 4 the `db:test:prepare` task no longer depends on the `abort_if_pending_migrations` task, which leaves this comment out of sync.
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WIP: Fix the AS::Callbacks terminator regression from 4.2.3
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Rails 4.2.3 AS::Callbacks will not halt chain if `false` is returned.
That is the behavior of specific callbacks like AR::Callbacks and
AM::Callbacks.
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newer mysql versions
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When I originally reviewed the #20317, I believe these changes were
present, but it appears that it was later updated so that they were
removed. Since Travis hadn't re-run the build, this slipped through.
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And we are passing them as separate types in the query, which means 0
precision is still not supported by older versions of MySQL. I also
missed a handful of other cases where they need to be conditionally
applied.
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Specifically, versions of MySQL prior to 5.6 do not support this, which
is what's used on Travis by default. The method `mysql_56?` appeared to
only ever be used to conditionally apply subsecond precision, so I've
generalized it and used it more liberally.
This should fix the test failures caused by #20317
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AR: take precision into count when assigning a value to timestamp
attribute
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Timestamp column can have less precision than ruby timestamp
In result in how big a fraction of a second can be stored in the
database.
m = Model.create!
m.created_at.usec == m.reload.created_at.usec
# => false
# due to different seconds precision in Time.now and database column
If the precision is low enough, (mysql default is 0, so it is always low
enough by default) the value changes when model is reloaded from the
database. This patch fixes that issue ensuring that any timestamp
assigned as an attribute is converted to column precision under the
attribute.
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This removes the following warning.
```
activerecord/lib/active_record/relation/calculations.rb:74: warning: `&' interpreted as argument prefix
```
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Fix arguments of `AR::Calculations#sum`
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Arguments of `#sum` does not match with other shortcuts methods
(count, average, minimum, and maximum).
This commit fix these two points:
* call `super` with only block arguments
First argument of `super` method, `Enumerable#sum`, is `identity`
and first argument of `AR::Calculations#sum` is `column_name`.
`Enumerable#sum` does not expect `column_name` to be passed.
* Change first argument of `sum` from array arguemnt to single
argument to match other shortcuts methods. When `sum` accept
array arguemnt, user can pass multi arguments and an exception is
raised from `calculate`.
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Remove not used argument `table_name` of `sanitize_sql_for_conditions`
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This argument was needen when `sanitize_sql_for_conditions` internally
called `sanitize_sql_hash_for_conditions`.
But `sanitize_sql_hash_for_conditions` was deprecated
(https://github.com/rails/rails/commit/eb921000a11bc87a3b001164fc367b84aee584c5)
and deleted
(https://github.com/rails/rails/commit/3a59dd212315ebb9bae8338b98af259ac00bbef3)
(https://github.com/rails/rails/commit/4bd089f1d93fa168b0ae17dd8c92a5157a2537d7).
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introduce `conn.data_source_exists?` and `conn.data_sources`.
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These new methods are used from the Active Record model layer to
determine which relations are viable to back a model. These new methods
allow us to change `conn.tables` in the future to only return tables and
no views. Same for `conn.table_exists?`.
The goal is to provide the following introspection methods on the
connection:
* `tables`
* `table_exists?`
* `views`
* `view_exists?`
* `data_sources` (views + tables)
* `data_source_exists?` (views + tables)
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We should not run MysqlAdapter tests when running with `sqlite3_mem`.
This also moves the test-case outside the MysqlAdapter namespace. This
will prevent the following error when running everything:
```
1) Error:
TestAdapterWithInvalidConnection#test_inspect_on_Model_class_does_not_raise:
TypeError: superclass mismatch for class MysqlAdapter
```
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Check mysql structure_load for errors
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structure_dump consistent
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See 7dcfc25e7c52682a4343c2ba7188a69e7c06c936 for more details
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Fixes #21488
[Sean Griffin & johanlunds]
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We should probably review the usage of these constants and decide
whether we want to be more transparent about which things come from
Active Model vs Active Record, as this is meaningful information as to
whether there is database specific behavior or not.
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Any tests for a type which is not overridden by Active Record, and does
not test the specifics of the attributes API interacting in more complex
ways have no reason to be in the Active Record suite. Doing this
revealed that the implementation of the date and time types in AM was
actually completely broken, and incapable of returning any value other
than `nil`.
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Things like decorations, overrides, and priorities only matter for
Active Record, so the Active Model registry can be implemented much more
simply. At this point, I wonder if having Active Record's registry
inherit from Active Model's is even worth the trouble?
The Active Model class was also missing test cases, which have been
backfilled.
This removes the error when two types are registered with the same name,
but given that Active Model is meant to be significantly more generic, I
do not think this is an issue for now. If we want, we can raise an error
at the point that someone tries to register it.
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We do not need to require each file from AM individually, the type
module does that for us. Even if the classes are extremely small right
now, I'd rather keep any custom classes needed by AR in their own files,
as they can easily have more complex changes in the future.
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These are used by the connection adapters to convert SQL type
information into the appropriate type object, and makes no sense outside
of the context of Active Record
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The first step of bringing typecasting to ActiveModel
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Add title for key lengths for multiple keys.
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Previously there was no separator between the two code examples so it looked like:
```ruby
CREATE INDEX by_name ON accounts(name(10))
add_index(:accounts, [:name, :surname], name: 'by_name_surname', length: {name: 10, surname: 15})
```
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