Add required_without_all rule

Author: emsifa

src/Rules/RequiredWithoutAll.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace Rakit\Validation\Rules;
+
+use Rakit\Validation\Rule;
+
+class RequiredWithoutAll extends Required
+{
+    protected $implicit = true;
+
+    protected $message = "The :attribute is required";
+
+    public function fillParameters(array $params)
+    {
+        $this->params['fields'] = $params;
+        return $this;
+    }
+
+    public function check($value)
+    {
+        $this->requireParameters(['fields']);
+        $fields = $this->parameter('fields');
+        $validator = $this->validation->getValidator();
+        $required_validator = $validator('required');
+
+        foreach($fields as $field) {
+            if ($this->validation->hasValue($field)) {
+                return true;
+            }
+        }
+
+        $this->setAttributeAsRequired();
+        return $required_validator->check($value, []); 
+    }
+
+}

src/Validator.php

@@ -79,6 +79,7 @@ protected function registerBaseValidators()
             'required_with'             => new Rules\RequiredWith,
             'required_without'          => new Rules\RequiredWithout,
             'required_with_all'         => new Rules\RequiredWithAll,
+            'required_without_all'      => new Rules\RequiredWithoutAll,
             'email'                     => new Rules\Email,
             'alpha'                     => new Rules\Alpha,
             'numeric'                   => new Rules\Numeric,

tests/ValidatorTest.php

@@ -241,6 +241,26 @@ public function testRequiredWithAllRule()
         $this->assertFalse($v2->passes());
     }
 
+    public function testRequiredWithoutAllRule()
+    {
+        $v1 = $this->validator->validate([
+            'b' => '',
+            'a' => '1'
+        ], [
+            'b' => 'required_without_all:a,c'
+        ]);
+
+        $this->assertTrue($v1->passes());
+
+        $v2 = $this->validator->validate([
+            'b' => '',
+        ], [
+            'b' => 'required_without_all:a,c'
+        ]);
+
+        $this->assertFalse($v2->passes());
+    }
+
     public function testRulePresent()
     {
         $v1 = $this->validator->validate([