Merge pull request #233 from rvsia/ignoreEmptyValuesLengthValidator

Ignore empty values length validator

Author: Hyperkid123

packages/react-form-renderer/src/tests/validators/validators.test.js

@@ -28,6 +28,14 @@ describe('New validators', () => {
   });
 
   describe('Length validator', () => {
+    it('should pass empty value', () => {
+      expect(validatorMapper(validators.EXACT_LENGTH)({ threshold: 5 })('')).toBeUndefined();
+    });
+
+    it('should pass undefined value', () => {
+      expect(validatorMapper(validators.EXACT_LENGTH)({ threshold: 5 })(undefined)).toBeUndefined();
+    });
+
     it('should pass exact length of 5 characters validation', () => {
       expect(validatorMapper(validators.EXACT_LENGTH)({ threshold: 5 })('12345')).toBeUndefined();
     });

packages/react-form-renderer/src/validators/index.js

@@ -21,7 +21,11 @@ export const length = memoize(({
   equal = selectNum(equal, is);
   min = selectNum(min, minimum);
   max = selectNum(max, maximum);
-  return prepare ((value = []) => {
+  return prepare ((value) => {
+    if (!value) {
+      return;
+    }
+
     if (equal !== null && value.length !== equal) {
       const msg = prepareMsg(message, 'wrongLength', { count: equal }).defaultMessage;
       return typeof msg === 'string' ? msg : msg(equal);