Add more

Author: martijn00

CHANGELOG.md

@@ -12,6 +12,8 @@
 * Add notMatch
 * Add range
 * Add date range
+* Add must be true
+* Add must be false
 
 ## 10.0.2
 * Reland generated l10n files

README.md

@@ -75,6 +75,8 @@ Available built-in validators include:
 - `FormBuilderValidators.lowercase()` - requires the field's value to be lowercase.
 - `FormBuilderValidators.fileExtension()` - requires the field's value to a valid file extension.
 - `FormBuilderValidators.fileSize()` - requires the field's to be less than the max size.
+- `FormBuilderValidators.mustBeTrue()` - requires the field's to be true.
+- `FormBuilderValidators.mustBeFalse()` - requires the field's to be false.
 
 ### Supported languages
 

lib/l10n/intl_en.arb

@@ -27,5 +27,7 @@
   "lowercaseErrorText": "Value must be lowercase.",
   "fileExtensionErrorText": "File extension must be {extensions}",
   "fileSizeErrorText": "File size must be less than {maxSize} while it is {fileSize}",
-  "dateRangeErrorText": "Date must be in range {min} - {max}"
+  "dateRangeErrorText": "Date must be in range {min} - {max}",
+  "mustBeTrueErrorText": "This field must be true.",
+  "mustBeFalseErrorText": "This field must be false."
 }

lib/src/form_builder_validators.dart

@@ -496,4 +496,20 @@ class FormBuilderValidators {
       ],
     );
   }
+
+  /// [FormFieldValidator] that requires the field's value to be a bool and true.
+  static FormFieldValidator<bool> mustBeTrue({
+    String? errorText,
+  }) =>
+      (valueCandidate) => valueCandidate != true
+          ? errorText ?? FormBuilderLocalizations.current.mustBeTrueErrorText
+          : null;
+
+  /// [FormFieldValidator] that requires the field's value to be a bool and false.
+  static FormFieldValidator<bool> mustBeFalse({
+    String? errorText,
+  }) =>
+      (valueCandidate) => valueCandidate != false
+          ? errorText ?? FormBuilderLocalizations.current.mustBeFalseErrorText
+          : null;
 }