Merge pull request #15 from spira/feature/composite-key-validation

Adding composite key validation method (unique_with).

Validation/SpiraValidator.php

@@ -14,6 +14,7 @@
 use Illuminate\Support\Arr;
 use Rhumsaa\Uuid\Uuid;
 use Spira\Core\Model\Datasets\Countries;
+use Illuminate\Support\Facades\DB;
 
 class SpiraValidator extends Validator
 {
@@ -78,6 +79,26 @@ public function validateNotRequiredIf($attribute, $value, $parameters)
         return true;
     }
 
+    /**
+     * Rule used to validate if two columns are unique within a table.
+     * 
+     * Usage: 
+     * 'field1' => 'unique_with:table_name,field2'
+     */
+    public function validateUniqueWith($attribute, $value, $parameters)
+    {
+        $count = DB::table($parameters[0])
+            ->where($attribute, '=', $value)
+            ->where($parameters[1], '=', $this->getData()[$parameters[1]])
+            ->count();
+
+        if ($count > 0) {
+            return false;
+        }
+
+        return true;
+    }
+
     /**
      * Register custom validation rule for countries.
      *

tests/ValidatorTest.php

@@ -142,4 +142,28 @@ public function testFailingValidateAlphaDashSpace()
 
         $this->assertContains('spaces', $validation->messages()->get('username')[0]);
     }
+
+    public function testValidateUniqueWith()
+    {
+        $testEntity = $this->getFactory(TestEntity::class)->customize([
+            'integer' => 123,
+            'text' => 'foobar',
+        ])->create();
+
+        $testEntity->entity_id = (string) Uuid::uuid4();
+
+        $validationFail = $this->validator->make($testEntity->toArray(), [
+            'integer' => 'unique_with:'.TestEntity::getTableName().',text',
+        ]);
+
+        $this->assertFalse($validationFail->passes());
+
+        $testEntity->text = 'barfoo';
+
+        $validationPass = $this->validator->make($testEntity->toArray(), [
+            'integer' => 'unique_with:'.TestEntity::getTableName().',text',
+        ]);
+
+        $this->assertTrue($validationPass->passes());
+    }
 }