29 lines
742 B
Dart
29 lines
742 B
Dart
String? timeValidator(String? value) {
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if (value == null || value.isEmpty) return null;
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if (RegExp(r'^([0-1]?[0-9]|2[0-3]):[0-5][0-9]$').hasMatch(value)) {
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return null;
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}
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return 'Not a valid time format';
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}
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String? dateTimeValidator(String? value) {
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if (value == null || value.isEmpty) return null;
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return DateTime.tryParse(value) != null ? null : 'Not a date format';
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}
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String? coordinatesValidator(String? value) {
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if (value == null || value.isEmpty) return null;
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if (RegExp(r'^\d+\.?\d*, *\d+\.?\d*$').hasMatch(value)) {
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return null;
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}
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return 'Not a valid coordinate format';
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}
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String? notEmptyValidator(String? value) {
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if (value != null && value.isNotEmpty) return null;
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return 'Can\'t be empty';
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}
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