Safe Haskell	Safe-Inferred
Language	Haskell2010

Data.Aeson.Extra

Synopsis

buildObject ∷ (Object → Object) → Value
optionalField ∷ ToJSON a ⇒ Key → Maybe a → Object → Object
requiredField ∷ ToJSON a ⇒ Key → a → Object → Object
stripPrefix ∷ String → String → String

Documentation

buildObject ∷ (Object → Object) → Value Source #

Build a JSON object omitting optional keys if a corresponding value is Nothing.

Example: buildObject $ requiredField "field1" a . requiredField "field2" c . optionalField "field3" (Just "hello") . optionalField "field4" Nothing builds this JSON object: { "field1": a, "field2": c, "field3": "hello" } omitting optional field4.

optionalField ∷ ToJSON a ⇒ Key → Maybe a → Object → Object Source #

requiredField ∷ ToJSON a ⇒ Key → a → Object → Object Source #

stripPrefix Source #

Arguments

∷ String	Field prefix to strip
→ String	Field name
→ String

A field label modifier that strips a prefix from the camelCased field name; >>> stripPrefix "preamble" "preambleTitle" "title"