persistent-template

Type-safe, non-relational, multi-backend persistence.

http://www.yesodweb.com/book/persistent

Version on this page:	2.5.4@rev:2
LTS Haskell 21.13:	2.12.0.0
Stackage Nightly 2023-09-24:	2.12.0.0
Latest on Hackage:	2.12.0.0

See all snapshots persistent-template appears in

MIT licensed by Michael Snoyman

Maintained by Michael Snoyman, Greg Weber

This version can be pinned in stack with:persistent-template-2.5.4@sha256:c6de26d0ffe1cc5439b25e2a98881999b1cb707caa70ba06bc8de629c6e40f0f,2284

Module documentation for 2.5.4

Database
- Database.Persist
  - Database.Persist.TH

Depends on 16 packages(full list with versions):

aeson, aeson-compat, base, bytestring, containers, ghc-prim, http-api-data, monad-control, monad-logger, path-pieces, persistent, tagged, template-haskell, text, transformers, unordered-containers

Used by 4 packages in lts-12.14(full list with versions):

eventful-sql-common, persistent-mysql-haskell, stack, yesod-persistent

persistent-template

Provides Template Haskell helpers for persistent. For more information, see the chapter in the Yesod book.

code organization

The TH.hs module contains code generators. persistent-template uses EntityDefs that it gets from the quasi-quoter. The quasi-quoter is in persistent Quasi.hs Similarly mant of the types come from the persistent library

Changes

2.5.4

persistent#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