[11.x] Where doesnt have nullable morph (#54363)

* first pass at allowing querying non existence of nullable morph - will need moving up * move querying non existence of nullable morph to has morph method * handle checking for 0 has morphs the same as less than 1 has morphs * work on assumption that has morph less than needs null check * attempt to handle all operators * merge into existing query - all existing tests passing * add test * revert signature change * readd docblocks * fix space * formatting --------- Co-authored-by: Mior Muhammad Zaki <crynobone@gmail.com>

Author: liamduckett

src/Illuminate/Database/Eloquent/Concerns/QueriesRelationships.php

@@ -244,6 +244,12 @@ public function hasMorph($relation, $types, $operator = '>=', $count = 1, $boole
 
  $types = (array) $types;
 
+ $checkMorphNull = $types === ['*']
+ && (($operator === '<' && $count >= 1)
+ || ($operator === '<=' && $count >= 0)
+ || ($operator === '=' && $count === 0)
+ || ($operator === '!=' && $count >= 1));
+
  if ($types === ['*']) {
  $types = $this->model->newModelQuery()->distinct()->pluck($relation->getMorphType())
  ->filter()
@@ -274,7 +280,8 @@ public function hasMorph($relation, $types, $operator = '>=', $count = 1, $boole
  ->whereHas($belongsTo, $callback, $operator, $count);
  });
  }
- }, null, null, $boolean);
+ }, null, null, $boolean)
+ ->when($checkMorphNull, fn (self $query) => $query->orWhereMorphedTo($relation, null));
  }
 
  /**

tests/Integration/Database/EloquentWhereHasMorphTest.php

@@ -255,6 +255,13 @@ public function testModelScopesAreAccessible()
 
  $this->assertEquals([1, 4], $comments->pluck('id')->all());
  }
+
+ public function testWhereDoesntHaveMorphWithNullableMorph()
+ {
+ $comments = Comment::whereDoesntHaveMorph('commentable', '*')->orderBy('id')->get();
+
+ $this->assertEquals([3, 7, 8], $comments->pluck('id')->all());
+ }
 }
 
 class Comment extends Model