| Commit message (Collapse) | Author | Age | Files | Lines |
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`quote_default_expression` can be passed nil value when `null: true` and
`default: nil`. This addressed in that case.
Fixes #29222.
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The old top level classes PGconn, PGresult and PGError were deprecated
since pg-0.13.0: https://github.com/ged/ruby-pg/blob/master/History.rdoc#v0130-2012-02-09-michael-granger-gedfaeriemudorg
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Extract `quoted_binary` and use it rather than override `_quote`
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Each databases have different binary representation. Therefore all
adapters overrides `_quote` for quoting binary.
Extract `quoted_binary` for quoting binary and use it rather than
override `_quote`.
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In f1a0fa9 we moved backend specific timestamp behavior out of the type
and into the adapter. This was in line with our general attempt to
reduce the number of adapter specific type subclasses. However, on PG,
the array type performs all serialization, including database encoding
in its serialize method.
This means that we have converted the value into a string before
reaching the database, so no adapter specific logic can be applied (and
this also means that timestamp arrays were using the default `.to_s`
method on the given object, which likely meant timestamps were being
ignored in certain cases as well)
Ultimately I want to do a more in depth refactoring which separates
database serializer objects from the active model type objects, to give
us a less awkward API for introducing the attributes API onto Active
Model.
However, in the short term, we follow the solution we've applied
elsewhere for this. Move behavior off of the type and into the adapter,
and use a data object to allow the type to communicate information up
the stack.
Fixes #27514.
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The current code base is not uniform. After some discussion,
we have chosen to go with double quotes by default.
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Caching a mutable string causes the following issue.
```
Loading development environment (Rails 5.1.0.alpha)
irb(main):001:0> ActiveRecord::Base.connection.quote_table_name('foo') << '!!'
=> "`foo`!!"
irb(main):002:0> ActiveRecord::Base.connection.quote_table_name('foo') << '!!'
=> "`foo`!!!!"
irb(main):003:0> ActiveRecord::Base.connection.quote_table_name('foo') << '!!'
=> "`foo`!!!!!!"
```
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Where appropriatei, prefer the more concise Regexp#match?,
String#include?, String#start_with?, or String#end_with?
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Example:
create_table :posts do |t|
t.datetime :published_at, default: -> { 'NOW()' }
end
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Closes #21418.
Previously schema names were not quoted. This leads to issues when a
schema names contains a ".". Methods in `schema_statements.rb` should
quote user input.
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The microseconds handling was already moved to `Quoting#quoted_date`.
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We do this in the adapter classes specifically, so the types aren't
registered if we don't use that adapter. Constants under the PostgreSQL
namespace for example are never loaded if we're using mysql.
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Refactor `quote_default_expression`
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`quote_default_expression` and `quote_default_value` are almost the same
handling for do not quote default function of `:uuid` columns. Rename
`quote_default_value` to `quote_default_expression`, and remove
duplicate code.
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The latest version of the PG gem can actually convert the primitives for
us in C code, which gives a pretty substantial speed up. A few cases
were only there to add the `infinity` method, which I just put on the
range type (which is the only place it was used). Floats also needed to
parse `Infinity` and `NaN`, but it felt reasonable enough to put that on
the generic form.
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The same is not true of `define_attribute`, which is meant to be the low
level no-magic API that sits underneath. The differences between the two
APIs are:
- `attribute`
- Lazy (the attribute will be defined after the schema has loaded)
- Allows either a type object or a symbol
- `define_attribute`
- Runs immediately (might get trampled by schema loading)
- Requires a type object
This was the last blocker in terms of public interface requirements
originally discussed for this feature back in May. All the
implementation blockers have been cleared, so this feature is probably
ready for release (pending one more look-over by me).
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The goal is to remove the type object from the column, and remove
columns from the type casting process entirely. The primary motivation
for this is clarity. The connection adapter does not have sufficient
type information, since the type we want to work with might have been
overriden at the class level. By taking this object from the column,
it is easy to mistakenly think that the column object which exists on
the connection adapter is sufficient. It isn't.
A concrete example of this is `serialize`. In 4.2 and earlier, `where`
worked in a very inconsistent and confusing manner. If you passed a
single value to `where`, it would serialize it before querying, and do
the right thing. However, passing it as part of an array, hash, or range
would cause it to not work. This is because it would stop using prepared
statements, so the type casting would come from arel. Arel would have no
choice but to get the column from the connection adapter, which would
treat it as any other string column, and query for the wrong value.
There are a handful of cases where using the column object to find the
cast type is appropriate. These are cases where there is not actually a
class involved, such as the migration DSL, or fixtures. For all other
cases, the API should be designed as such that the type is provided
before we get to the connection adapter. (For an example of this, see
the work done to decorate the arel table object with a type caster, or
the introduction of `QueryAttribute` to `Relation`).
There are times that it is appropriate to use information from the
column to change behavior in the connection adapter. These cases are
when the primitive used to represent that type before it goes to the
database does not sufficiently express what needs to happen. An example
of this that affects every adapter is binary vs varchar, where the
primitive used for both is a string. In this case it is appropriate to
look at the column object to determine which quoting method to use, as
this is something schema dependent.
An example of something which would not be appropriate is to look at the
type and see that it is a datetime, and performing string parsing when
given a string instead of a date. This is the type of logic that should
live entirely on the type. The value which comes out of the type should
be a sufficiently generic primitive that the adapter can be expected to
know how to work with it.
The one place that is still using the column for type information which
should not be necessary is the connection adapter type caster which is
sometimes given to the arel table when we can't find the associated
table. This will hopefully go away in the near future.
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Related the commit 8f8f8058e58dda20259c1caa61ec92542573643d.
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Move microseconds formatting to `AbstractAdapter`.
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Not sure how we missed this case when we moved everything else to the
`_quote` method.
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Remove PG's definition of `type_cast`
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All cases except for `nil` in an array have been removed. `nil` in an
array is handled by the Array type object.
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Remove unneccessary special case for money in quoting
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Do not rely on the column type when quoting infinity
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The test case for CVE-2014-3483 doesn't actually send the generated SQL
to the database. The generated SQL is actually invalid for real inputs.
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Fix CVE-2014-3483 and protect against CVE-2014-3482.
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Remove array workaround in PG quoting
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We no longer need to do fancy legwork to make sure arrays use a type
object, now that schema methods use a real type object.
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Hstore no longer needs additional quoting to be used in an array, the
array type handles it sufficiently.
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Adding `# :nodoc:` to the parent `class` / `module` is not going
to ignore nested classes or modules.
There is a modifier `# :nodoc: all` but sadly the containing class
or module will continue to be in the docs.
/cc @sgrif
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We're never going to be able to use the attribute object here, however,
so let's just accept the ugly demeter violation here for now.
Remove test cases which were either redundant with other tests in the
file, or were actually testing the type objects (which are tested
elsewhere)
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The case where we have a column object, but don't have a type cast
method involves type casting the default value when changing the schema.
We get one of the column definition structs instead. That is a case that
I'm trying to remove overall, but in the short term, we can achieve the
same behavior without needing to pass the adapter to the array type by
creating a fake type that proxies to the adapter.
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BC era year is (astronomical year + 1) and starts from 1 BC.
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This inlines casting for the most obvious types. The rest will
follow eventually. I need to put some tests in place, to make sure
that the inlining is not causing regressions.
/cc @sgrif
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Partial revert of c0bfc3f412834ffe8327a15ae3a46602cc28e425
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... 'shared' OID, ArrayParser and Cast helpers, also re-arranged Column's dependencies
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