PRuleMaxString class
Constructors
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PRuleMaxString(String? _value, int max, {String message = "Maximum size is"})
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Check if the value size less than or equal to the max value
value
is the value to check
max is the maximum size of value
message is the error message
Methods
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noSuchMethod(Invocation invocation)
→ dynamic
-
Invoked when a nonexistent method or property is accessed.
inherited
-
toString()
→ String
-
A string representation of this object.
inherited
-
validate()
→ String?
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Validate the value
Return null if the value is valid
Return the error message if the value is invalid
Return null if the value is empty
override