StartsWith class
A validation rule for checking if a value starts with a specified pattern.
The StartsWith
class is a concrete implementation of the FormifyRule
abstract class.
It is used to validate whether a value starts with a specified pattern.
This rule checks if the input value
starts with the provided pattern
.
If the value
does not start with the pattern
, an error message is generated.
- Inheritance
-
- Object
- FormifyRule
- StartsWith
Constructors
- StartsWith(String pattern)
-
Creates an instance of the
StartsWith
validation rule with a specifiedpattern
.
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- message ↔ String
-
Gets the error message associated with the
StartsWith
rule.getter/setter pairinherited-setteroverride-getter - pattern → String
-
The prefix pattern to check for at the beginning of the value.
final
- ruleKey → String
-
The unique key identifying the validation rule.
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
buildMessage(
String attribute, String input, {String onExtra(String)?}) → String -
Builds a validation error message by replacing placeholders in the error message template.
inherited
-
call(
String attribute, String value) → String? -
Validates whether a value starts with the specified
pattern
.override -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited