update docs, cleaning

docs_src/queries/docs004.py

@@ -0,0 +1,30 @@
+import databases
+import ormar
+import sqlalchemy
+
+database = databases.Database("sqlite:///db.sqlite")
+metadata = sqlalchemy.MetaData()
+
+
+class ToDo(ormar.Model):
+    class Meta:
+        tablename = "todos"
+        metadata = metadata
+        database = database
+
+    id: int = ormar.Integer(primary_key=True)
+    text: str = ormar.String(max_length=500)
+    completed = ormar.Boolean(default=False)
+
+
+# create multiple instances at once with bulk_create
+await ToDo.objects.bulk_create(
+    [
+        ToDo(text="Buy the groceries."),
+        ToDo(text="Call Mum.", completed=True),
+        ToDo(text="Send invoices.", completed=True),
+    ]
+)
+
+todoes = await ToDo.objects.all()
+assert len(todoes) == 3