[8.x] Fix multiple dots for digits_between rule (#42330)

* Fix multiple dots for digits_between rule

* wip

* wip

* wip

* wip

* Update ValidatesAttributes.php

Co-authored-by: Taylor Otwell <[email protected]>

Author: driesvints

src/Illuminate/Validation/Concerns/ValidatesAttributes.php

@@ -582,6 +582,15 @@ public function validateDigitsBetween($attribute, $value, $parameters)
 
         $length = strlen((string) $value);
 
+        if (((string) $value) === '.') {
+            return false;
+        }
+
+        // Make sure there is not more than one dot...
+        if (($length - strlen(str_replace('.', '', (string) $value))) > 1) {
+            return false;
+        }
+
         return ! preg_match('/[^0-9.]/', $value)
                     && $length >= $parameters[0] && $length <= $parameters[1];
     }

tests/Validation/ValidationValidatorTest.php

@@ -2290,6 +2290,24 @@ public function testValidateDigits()
 
         $v = new Validator($trans, ['foo' => '0.9876'], ['foo' => 'digits_between:1,5']);
         $this->assertTrue($v->fails());
+
+        $v = new Validator($trans, ['foo' => '1..2'], ['foo' => 'digits_between:1,10']);
+        $this->assertTrue($v->fails());
+
+        $v = new Validator($trans, ['foo' => '123.456.789'], ['foo' => 'digits_between:1,10']);
+        $this->assertTrue($v->fails());
+
+        $v = new Validator($trans, ['foo' => '...'], ['foo' => 'digits_between:1,10']);
+        $this->assertTrue($v->fails());
+
+        $v = new Validator($trans, ['foo' => '.'], ['foo' => 'digits_between:1,10']);
+        $this->assertTrue($v->fails());
+
+        $v = new Validator($trans, ['foo' => '.2'], ['foo' => 'digits_between:0,10']);
+        $this->assertTrue($v->passes());
+
+        $v = new Validator($trans, ['foo' => '2.'], ['foo' => 'digits_between:1,10']);
+        $this->assertTrue($v->passes());
     }
 
     public function testValidateSize()