Using fixed_size instead of size

Author: WaVEV

django_mongodb_backend/indexes.py

@@ -180,7 +180,7 @@ def create_mongodb_index(
             mappings = {"path": field_path}
             if isinstance(field_, ArrayField):
                 try:
-                    vector_size = int(field_.size)
+                    vector_size = int(field_.fixed_size)
                 except (ValueError, TypeError) as err:
                     raise ValueError("Atlas vector search requires fixed size.") from err
                 if not isinstance(field_.base_field, FloatField | DecimalField):

tests/indexes_/models.py

@@ -15,7 +15,7 @@ class Article(models.Model):
     data = models.JSONField()
     embedded = EmbeddedModelField(Data)
     auto_now = models.DateTimeField(auto_now=True)
-    title_embedded = ArrayField(models.FloatField(), size=10)
-    description_embedded = ArrayField(models.FloatField(), size=10)
+    title_embedded = ArrayField(models.FloatField(), fixed_size=10)
+    description_embedded = ArrayField(models.FloatField(), fixed_size=10)
     number_list = ArrayField(models.FloatField())
     name_list = ArrayField(models.CharField(max_length=30), size=10)