FormBuilderRatingBar class Null safety

Field for selection of a numerical value using a star* rating widget



FormBuilderRatingBar({Key? key, required String name, FormFieldValidator<double>? validator, double? initialValue, InputDecoration decoration = const InputDecoration(), ValueChanged<double?>? onChanged, ValueTransformer<double?>? valueTransformer, bool enabled = true, FormFieldSetter<double>? onSaved, AutovalidateMode autovalidateMode = AutovalidateMode.disabled, VoidCallback? onReset, FocusNode? focusNode, Color? glowColor, double? maxRating, TextDirection? textDirection, Color? unratedColor, bool allowHalfRating = false, Axis direction = Axis.horizontal, bool glow = true, double glowRadius = 2, double initialRating = 0.0, int itemCount = 5, EdgeInsetsGeometry itemPadding =, double itemSize = 40.0, double minRating = 0, bool tapOnlyMode = false, bool updateOnDrag = false, WrapAlignment wrapAlignment = WrapAlignment.start, RatingWidget? ratingWidget})


allowHalfRating bool
Default allowHalfRating = false. Setting true enables half rating support.
autovalidate bool
Used to enable/disable auto validation and update their error text.
@Deprecated('Use autovalidateMode parameter which provides more specific ' 'behavior related to auto validation. ' 'This feature was deprecated after v1.19.0.'), final, inherited
autovalidateMode AutovalidateMode
Used to enable/disable this form field auto validation and update its error text. [...]
final, inherited
builder FormFieldBuilder<double>
Function that returns the widget representing this form field. It is passed the form field state as input, containing the current value and validation state of this field.
final, inherited
decoration InputDecoration
The border, labels, icons, and styles used to decorate the field.
final, inherited
direction Axis
Direction of rating bar. [...]
enabled bool
Whether the form is able to receive user input. [...]
final, inherited
focusNode FocusNode?
An optional focus node to use as the focus node for this widget. [...]
final, inherited
glow bool
if set to true, Rating Bar item will glow when being touched. [...]
glowColor Color?
Defines color for glow. [...]
glowRadius double
Defines the radius of glow. [...]
hashCode int
The hash code for this object. [...]
@nonVirtual, read-only, inherited
initialRating double
Defines the initial rating to be set to the rating bar.
initialValue double?
An optional value to initialize the form field to, or null otherwise.
final, inherited
itemCount int
Defines total number of rating bar items. [...]
itemPadding EdgeInsetsGeometry
The amount of space by which to inset each rating item.
itemSize double
Defines width and height of each rating item in the bar. [...]
key Key?
Controls how one widget replaces another widget in the tree. [...]
final, inherited
maxRating double?
Sets maximum rating [...]
minRating double
Sets minimum rating [...]
name String
Used to reference the field within the form, or to reference form data after the form is submitted.
final, inherited
onChanged ValueChanged<double?>?
Called when the field value is changed.
final, inherited
onReset VoidCallback?
Called when the field value is reset.
final, inherited
onSaved FormFieldSetter<double>?
An optional method to call with the final value when the form is saved via
final, inherited
ratingWidget RatingWidget?
Defines widgets which are to used as rating bar items.
restorationId String?
Restoration ID to save and restore the state of the form field. [...]
final, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
tapOnlyMode bool
if set to true will disable drag to rate feature. Note: Enabling this mode will disable half rating capability. [...]
textDirection TextDirection?
The text flows from right to left if textDirection = TextDirection.rtl
unratedColor Color?
Defines color for the unrated portion. [...]
updateOnDrag bool
Defines whether or not the onRatingUpdate updates while dragging. [...]
validator FormFieldValidator<double>?
An optional method that validates an input. Returns an error string to display if the input is invalid, or null otherwise. [...]
final, inherited
valueTransformer ValueTransformer<double?>?
Called just before field value is saved. Used to massage data just before committing the value. [...]
final, inherited
wrapAlignment WrapAlignment
How the item within the RatingBar should be placed in the main axis. [...]


createElement() StatefulElement
Creates a StatefulElement to manage this widget's location in the tree. [...]
createState() → _FormBuilderRatingBarState
Creates the mutable state for this widget at a given location in the tree. [...]
debugDescribeChildren() List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children. [...]
@protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node. [...]
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep. [...]
toString({DiagnosticLevel minLevel =}) String
A string representation of this object. [...]
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) String
Returns a string representation of this node and its descendants. [...]
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) String
Returns a one-line detailed description of the object. [...]
toStringShort() String
A short, textual description of this widget.


operator ==(Object other) bool
The equality operator. [...]
@nonVirtual, inherited