diff options
Diffstat (limited to 'src/Hakyll/Web/Page/Metadata.hs')
| -rw-r--r-- | src/Hakyll/Web/Page/Metadata.hs | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/Hakyll/Web/Page/Metadata.hs b/src/Hakyll/Web/Page/Metadata.hs index 79c616e..89e17b6 100644 --- a/src/Hakyll/Web/Page/Metadata.hs +++ b/src/Hakyll/Web/Page/Metadata.hs @@ -6,6 +6,7 @@ module Hakyll.Web.Page.Metadata , setField , trySetField , setFieldA + , setFieldPage , renderField , changeField , copyField @@ -17,7 +18,7 @@ module Hakyll.Web.Page.Metadata import Prelude hiding (id) import Control.Category (id) -import Control.Arrow (Arrow, (>>>), (***), arr) +import Control.Arrow (Arrow, arr, (>>>), (***), (&&&)) import Data.List (intercalate) import Data.Maybe (fromMaybe) import Data.Time.Clock (UTCTime) @@ -28,6 +29,8 @@ import System.Locale (TimeLocale, defaultTimeLocale) import Hakyll.Web.Page.Internal import Hakyll.Core.Util.String +import Hakyll.Core.Identifier +import Hakyll.Core.Compiler -- | Get a metadata field. If the field does not exist, the empty string is -- returned. @@ -69,6 +72,13 @@ setFieldA :: Arrow a -> a (Page b, x) (Page b) -- ^ Resulting arrow setFieldA k v = id *** v >>> arr (uncurry $ flip $ setField k) +-- | Set a field of a page to the contents of another page +-- +setFieldPage :: String -- ^ Key to add the page under + -> Identifier (Page String) -- ^ Page to add + -> Compiler (Page a) (Page a) -- ^ Page compiler +setFieldPage key page = id &&& require_ page >>> setFieldA key (arr pageBody) + -- | Do something with a metadata value, but keep the old value as well. If the -- key given is not present in the metadata, nothing will happen. If the source -- and destination keys are the same, the value will be changed (but you should |