Fix exists rule when using foreign reference (#722)

Author: nicodevs

src/Translators/Rules.php

@@ -37,8 +37,8 @@ public static function fromColumn(string $context, Column $column): array
         }
 
         if ($column->dataType() === 'id' && ($column->attributes() || Str::endsWith($column->name(), '_id'))) {
-            $reference = $column->attributes()[0] ?? Str::beforeLast($column->name(), '_id');
-            $rules = array_merge($rules, ['integer', 'exists:' . Str::plural($reference) . ',id']);
+            $table = $column->modifiers()[0]['foreign'] ?? Str::plural($column->attributes()[0] ?? Str::beforeLast($column->name(), '_id'));
+            $rules = array_merge($rules, ['integer', 'exists:' . $table . ',id']);
         }
 
         if (in_array($column->dataType(), self::INTEGER_TYPES)) {

tests/Feature/Translators/RulesTest.php

@@ -128,6 +128,17 @@ public function forColumn_returns_exists_rule_for_foreign_keys($name, $table): v
         $this->assertContains("exists:{$table},id", $actual);
     }
 
+    #[Test]
+    public function forColumn_returns_exists_rule_for_foreign_keys_with_foreign_table_name(): void
+    {
+        $column = new Column('author_id', 'id', [['foreign' => 'users']]);
+
+        $actual = Rules::fromColumn('context', $column);
+
+        $this->assertContains('integer', $actual);
+        $this->assertContains('exists:users,id', $actual);
+    }
+
     #[Test]
     public function forColumn_returns_gt0_rule_for_unsigned_numeric_types(): void
     {