RPAnswerFormat class Null safety
A base (abstract) class for different Answer Formats.
The Answer Format describes the format how a question can be answered. Research Package uses RPQuestionStep and RPFormStep (RPQuestionSteps on a single page) to represent a question in a survey. Each questions needs to have an associated Answer Format. Note: This class should be an abstract class but since we need to serialize it we have to provide a constructor and factory. There's no better solution found yet. Used in RPStepResult
- @JsonSerializable(fieldRename: FieldRename.snake, includeIfNull: false)
- $type ↔ String?
The runtime class name (type) of this object.
Used for deserialization from JSON objects.
read / write, inherited
- fromJsonFunction → Function
The function which can convert a JSON string to an object of this type.
- hashCode → int
The hash code for this object. [...]
- jsonType → String
Return the $type to be used for JSON serialization of this class.
Default is runtimeType. Only specify this if you need another type.
- questionType ↔ RPQuestionType
The Question Type of the Answer Format. Should be implemented in the subclasses.
read / write
- runtimeType → Type
A representation of the runtime type of the object.