Quokka.Types

Types used by the Functions to generate test data and represent data and relational associations.

Documentation

data ChildTable

A child table represents a relation in Postgres with a foreign key to a parent table.

Constructors

ChildTable Text [Text]

type Data = [Text]

Alias for a list of values.

newtype FK

Column that represents a foreign key in a database.

Constructors

FK Text

newtype Id

Represents the identity column of a row in a table. I.e. the primary key of a table which is limited to integers.

Constructors

Id

Fields

• getId :: Int

Instances

Eq Id

Defined in Quokka.Types

Methods

(==) :: Id -> Id -> Bool

(/=) :: Id -> Id -> Bool

Show Id

Defined in Quokka.Types

Methods

showsPrec :: Int -> Id -> ShowS

show :: Id -> String

showList :: [Id] -> ShowS

FromRow Id

Defined in Quokka.Types

Methods

fromRow :: RowParser Id

ToField Id

Defined in Quokka.Types

Methods

toField :: Id -> Action

data ParentTable

A parent table represents a relation in Postgres with no foreign keys.

Constructors

ParentTable Text [Text]

newtype Table

This type is used to model and create deletes.

Constructors

Table Text

data Relation

A relation is defined as a parent table that is related through a custom foreign key.

Constructors

Relation ParentTable FK

data Result

Represents a result retrieved by Quokka via Postgres-simple.

Constructors

SingleResult ParentTable Id

newtype Row a

A row represents a Postgres row retrieved for a relation.

Constructors

Row [a]

Instances

ToField a => ToRow (Row a)

Defined in Quokka.Types

Methods

toRow :: Row a -> [Action]