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## Unreleased changes
## 2.12.0.0
* Decomposed `HaskellName` into `ConstraintNameHS`, `EntityNameHS`, `FieldNameHS`. Decomposed `DBName` into `ConstraintNameDB`, `EntityNameDB`, `FieldNameDB` respectively. [#1174](https://github.com/yesodweb/persistent/pull/1174)
* [#1214](https://github.com/yesodweb/persistent/pull/1214):
* This package was asborbed into `persistent` itself.
## 2.9.1.0
* [#1145](https://github.com/yesodweb/persistent/pull/1148)
* Fix a bug where the `SqlType` for a shared primary key was being
incorrectly set to `SqlString` instead of whatever the target primary key
sql type was.
* [#1151](https://github.com/yesodweb/persistent/pull/1151)
* Automatically generate `SymbolToField` instances for datatypes, allowing
`OverloadedLabels` to be used with the `EntityField` type.
## 2.9
* Always use the "stock" strategy when deriving Show/Read for keys [#1106](https://github.com/yesodweb/persistent/pull/1106)
* This fixes a regression from 2.8.0, which started using the `newtype` strategy when deriving `Show`/`Read` for keys
* In practice, this means that from 2.8.0–2.8.3.1, for the following schema:
```
Person
name Text
CustomPrimary
anInt Int
Primary anInt
name Text
```
`PersonKey 1` would show as `"SqlBackendKey {unSqlBackendKey = 1}"`
and `CustomPrimaryKey 1` would show as `"1"`
This was generally poor for debugging and logging, since all tables keys would print the same. For Persistent < 2.8.0 and > 2.8.3.1, they instead will show as:
`"PersonKey {unPersonKey = SqlBackendKey {unSqlBackendKey = 1}}"`
and `"CustomPrimaryKey {unCustomPrimaryKey = 1}"`
This could be a breaking change if you have used `Show` on a key, wrote that string into some persistent storage like a database, and are trying to `Read` it back again later.
## 2.8.3.1
* Allow aeson 1.5. [#1085](https://github.com/yesodweb/persistent/pull/1085)
## 2.8.3.0
* Add `Lift` instances for the cascade types. [#1060](https://github.com/yesodweb/persistent/pull/1060)
* Use `DeriveLift` to implement all `Lift` instances. Among other benefits,
this provides implementations of `liftTyped` on `template-haskell-2.16` (GHC
8.10) or later. [#1064](https://github.com/yesodweb/persistent/pull/1064)
## 2.8.2.3
* Require extensions in a more friendly manner. [#1030](https://github.com/yesodweb/persistent/pull/1030)
* Specify a strategy for all deriving clauses, which avoids the `-Wmissing-deriving-strategy` warning introduced in GHC 8.8.2. [#1030](https://github.com/yesodweb/persistent/pull/1030)
## 2.8.2.2
* Fix the `mkPersist` function to not require importing the classes explicitly. [#1027](https://github.com/yesodweb/persistent/pull/1027)
## 2.8.2.1
* Fix the test-suite for persistent-template. [#1023](https://github.com/yesodweb/persistent/pull/1023)
## 2.8.2
* Add `fieldError` to the export list of `Database.Persist.TH` [#1008](https://github.com/yesodweb/persistent/pull/1008)
## 2.8.1
* Let the user pass instances that will be derived for record and for key types (https://github.com/yesodweb/persistent/pull/990
## 2.8.0.1
* Small optimization/code cleanup to generated Template Haskell code size, by slimming the implementation of to/fromPersistValue for Entities. [#1014](https://github.com/yesodweb/persistent/pull/1014)
## 2.8.0
* Reduces the amount of code generated by Template Haskell. The amount of code generated for a certain function was O(N^2) with respect to the number of fields on a given Entity. This change shows dramatic improvements in benchmarks for compiling Persistent models. [#]()
* Drops support for GHC 8.0, so that `DerivingStrategies` can be used by `persistent-template`
* `persistent-template` now requires `DerivingStrategies`, `GeneralizedNewtypeDeriving`, and `StandaloneDeriving` to be enabled in the file where Persistent entities are created
* Fixes a long-standing issue where persistent-template would fail when `DeriveAnyClass` was enabled (See #578)
* [#1002](https://github.com/yesodweb/persistent/pull/1002)
## 2.7.4
* Remove an overlapping instance for `Lift a`. [#998](https://github.com/yesodweb/persistent/pull/998)
## 2.7.3
* Update module documentation for `Database.Persist.TH` to better describe the purpose of the module [#968](https://github.com/yesodweb/persistent/pull/968)
* Support template-haskell-2.15 [#959](https://github.com/yesodweb/persistent/pull/959)
## 2.7.2
* Expose the knot tying logic of `parseReferences` so that users can build
migrations from independently define entities at runtime [#932](https://github.com/yesodweb/persistent/pull/932)
## 2.7.1
* Add the `mkEntityDefList` function to work around [#902](https://github.com/yesodweb/persistent/issues/902). [#904](https://github.com/yesodweb/persistent/pull/904)
## 2.7.0
* Depends on `persistent-2.10.0` which provides the `OnlyOneUniqueKey` and `AtLeastOneUniqueKey` classes. Automatically generates instances for these classes based on how many unique keys the entity definition gets. This changes requires `UndecidableInstances` to be enabled on each module that generates entity definitions. [#885](https://github.com/yesodweb/persistent/pull/885)
* Removed deprecated `sqlOnlySettings`. Please use `sqlSettings` instead. [#894](https://github.com/yesodweb/persistent/pull/894)
## 2.6.0
* [persistent#846](https://github.com/yesodweb/persistent/pull/846): Improve error message when marshalling fails
* [persistent#826](https://github.com/yesodweb/persistent/pull/826): Change `Unique` derive `Show`
## 2.5.4
* [persistent#778](https://github.com/yesodweb/persistent/issues/778): Add `persistManyFileWith`.
## 2.5.3.1
* Slight improvement to the error message when a Persistent field can't be parsed from database results
## 2.5.3
* Exposed `parseReferences` to allow custom QuasiQuoters
## 2.5.2
* Fix incorrect `ToJSON`/`FromJSON` instance generation for generic
backends
## 2.5.1.6
Allow non-null self-references in a list
## 2.5.1.4
* Allow composite Primary keys for tables that contain nullable fields.
* Support foreign keys to non-integer ids
## 2.5.1.3
* fix GHC 7.8 bug when a field name is "type"
## 2.5.1.2
* fix a bad Eq instance /= definition for Key when mpsGenetric=True
## 2.5.0.1
* workaround TH bug in GHC 7.10
## 2.5
* read/write typeclass split
## 2.1.6
* aeson 0.11
* transformers 0.5
## 2.1.4
support http-api-data for url serialization
## 2.1.3.3
By default explicitly use Int64 for foreign key references.
This avoids confusion on a 32 bit system.
## 2.1.3.1
Support foreign key references to composite primary keys
## 2.1.0.1
Support for monad-control 1.0
|
