[8.x] Added prohibits validation

src/Illuminate/Validation/Concerns/ReplacesAttributes.php

@@ -432,6 +432,20 @@ protected function replaceProhibitedUnless($message, $attribute, $rule, $paramet
         return str_replace([':other', ':values'], [$other, implode(', ', $values)], $message);
     }
 
+    /**
+     * Replace all place-holders for the prohibited_with rule.
+     *
+     * @param  string  $message
+     * @param  string  $attribute
+     * @param  string  $rule
+     * @param  array  $parameters
+     * @return string
+     */
+    protected function replaceProhibits($message, $attribute, $rule, $parameters)
+    {
+        return str_replace(':other', implode(' / ', $this->getAttributeList($parameters)), $message);
+    }
+
     /**
      * Replace all place-holders for the same rule.
      *

src/Illuminate/Validation/Concerns/ValidatesAttributes.php

@@ -1534,6 +1534,19 @@ public function validateProhibitedUnless($attribute, $value, $parameters)
         return true;
     }
 
+    /**
+     * Validate that other attributes do not exist when this attribute exists.
+     *
+     * @param  string  $attribute
+     * @param  mixed  $value
+     * @param  mixed  $parameters
+     * @return bool
+     */
+    public function validateProhibits($attribute, $value, $parameters)
+    {
+        return ! Arr::hasAny($this->data, $parameters);
+    }
+
     /**
      * Indicate that an attribute is excluded.
      *

tests/Validation/ValidationValidatorTest.php

@@ -1470,6 +1470,47 @@ public function testProhibitedUnless()
         $this->assertSame('The last field is prohibited unless first is in taylor, jess.', $v->messages()->first('last'));
     }
 
+    public function testProhibits()
+    {
+        $trans = $this->getIlluminateArrayTranslator();
+        $v = new Validator($trans, ['email' => 'foo', 'emails' => ['foo']], ['email' => 'prohibits:emails']);
+        $this->assertTrue($v->fails());
+
+        $trans = $this->getIlluminateArrayTranslator();
+        $v = new Validator($trans, ['email' => 'foo', 'emails' => []], ['email' => 'prohibits:emails']);
+        $this->assertTrue($v->fails());
+
+        $trans = $this->getIlluminateArrayTranslator();
+        $v = new Validator($trans, ['email' => 'foo', 'emails' => ''], ['email' => 'prohibits:emails']);
+        $this->assertTrue($v->fails());
+
+        $trans = $this->getIlluminateArrayTranslator();
+        $v = new Validator($trans, ['email' => 'foo', 'emails' => null], ['email' => 'prohibits:emails']);
+        $this->assertTrue($v->fails());
+
+        $trans = $this->getIlluminateArrayTranslator();
+        $v = new Validator($trans, ['email' => 'foo', 'emails' => false], ['email' => 'prohibits:emails']);
+        $this->assertTrue($v->fails());
+
+        $trans = $this->getIlluminateArrayTranslator();
+        $v = new Validator($trans, ['email' => 'foo', 'emails' => ['foo']], ['email' => 'prohibits:email_address,emails']);
+        $this->assertTrue($v->fails());
+
+        $trans = $this->getIlluminateArrayTranslator();
+        $v = new Validator($trans, ['email' => 'foo'], ['email' => 'prohibits:emails']);
+        $this->assertTrue($v->passes());
+
+        $trans = $this->getIlluminateArrayTranslator();
+        $v = new Validator($trans, ['email' => 'foo', 'other' => 'foo'], ['email' => 'prohibits:email_address,emails']);
+        $this->assertTrue($v->passes());
+
+        $trans = $this->getIlluminateArrayTranslator();
+        $trans->addLines(['validation.prohibits' => 'The :attribute field prohibits :other being present.'], 'en');
+        $v = new Validator($trans, ['email' => 'foo', 'emails' => 'bar', 'email_address' => 'baz'], ['email' => 'prohibits:emails,email_address']);
+        $this->assertFalse($v->passes());
+        $this->assertSame('The email field prohibits emails / email address being present.', $v->messages()->first('email'));
+    }
+
     public function testFailedFileUploads()
     {
         $trans = $this->getIlluminateArrayTranslator();