Hakyll.Core.Metadata

Documentation

type Metadata = Object

lookupString :: String -> Metadata -> Maybe String

lookupStringList :: String -> Metadata -> Maybe [String]

class Monad m => MonadMetadata m where

Minimal complete definition

getMetadata, getMatches

Methods

getMetadata :: Identifier -> m Metadata

getMatches :: Pattern -> m [Identifier]

getAllMetadata :: Pattern -> m [(Identifier, Metadata)]

Instances

MonadMetadata Compiler

Access provided metadata from anywhere

Defined in Hakyll.Core.Compiler.Internal

Methods

getMetadata :: Identifier -> Compiler Metadata

getMatches :: Pattern -> Compiler [Identifier]

getAllMetadata :: Pattern -> Compiler [(Identifier, Metadata)]

MonadMetadata Rules

Defined in Hakyll.Core.Rules.Internal

Methods

getMetadata :: Identifier -> Rules Metadata

getMatches :: Pattern -> Rules [Identifier]

getAllMetadata :: Pattern -> Rules [(Identifier, Metadata)]

getMetadataField :: MonadMetadata m => Identifier -> String -> m (Maybe String)

getMetadataField' :: (MonadFail m, MonadMetadata m) => Identifier -> String -> m String

Version of getMetadataField which throws an error if the field does not exist.

makePatternDependency :: MonadMetadata m => Pattern -> m Dependency

newtype BinaryMetadata

Newtype wrapper for serialization.

Constructors

BinaryMetadata

Fields

• unBinaryMetadata :: Metadata

Instances

Binary BinaryMetadata

Defined in Hakyll.Core.Metadata

Methods

put :: BinaryMetadata -> Put

get :: Get BinaryMetadata

putList :: [BinaryMetadata] -> Put