&HProvide both an HTML and JSON representation for a piece of data, using ) the default layout for the HTML output ().  Wraps the  generated by  jsonToContent in a  . (Parse the request body as a JSON value.  Since: 0.2.3     yesod-json-0.2.3 Yesod.JsonJsondefaultLayoutJson jsonToRepJson parseJsonBody jsonScalarjsonListjsonMapyesod-core-0.9.4.1Yesod.Internal.Core defaultLayout Yesod.ContentContentRepJson