[8.x] Add withoutTrashed on Exists rule (#38314)

* add withoutTrashed on Exists rule

* Update Exists.php

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

Author: SagarNaliyapara

src/Illuminate/Validation/Rules/Exists.php

@@ -8,6 +8,19 @@ class Exists
 {
     use Conditionable, DatabaseRule;
 
+    /**
+     * Ignore soft deleted models during the existence check.
+     *
+     * @param  string  $deletedAtColumn
+     * @return $this
+     */
+    public function withoutTrashed($deletedAtColumn = 'deleted_at')
+    {
+        $this->whereNull($deletedAtColumn);
+
+        return $this;
+    }
+
     /**
      * Convert the rule to a validation string.
      *

tests/Validation/ValidationExistsRuleTest.php

@@ -173,6 +173,17 @@ public function testItChoosesValidRecordsUsingWhereNotInAndWhereNotInRulesTogeth
         $this->assertFalse($v->passes());
     }
 
+    public function testItIgnoresSoftDeletes()
+    {
+        $rule = new Exists('table');
+        $rule->withoutTrashed();
+        $this->assertSame('exists:table,NULL,deleted_at,"NULL"', (string) $rule);
+
+        $rule = new Exists('table');
+        $rule->withoutTrashed('softdeleted_at');
+        $this->assertSame('exists:table,NULL,softdeleted_at,"NULL"', (string) $rule);
+    }
+
     protected function createSchema()
     {
         $this->schema('default')->create('users', function ($table) {