added startswith, istartswith and same for endswith, add test for those

ormar/queryset/clause.py

@@ -15,6 +15,10 @@ FILTER_OPERATORS = {
     "iexact": "ilike",
     "contains": "like",
     "icontains": "ilike",
+    "startswith": "like",
+    "istartswith": "ilike",
+    "endswith": "like",
+    "iendswith": "ilike",
     "in": "in_",
     "gt": "__gt__",
     "gte": "__ge__",
@@ -169,7 +173,14 @@ class QueryClause:
     ) -> Tuple[str, bool]:
         has_escaped_character = False
 
-        if op not in ["contains", "icontains"]:
+        if op not in [
+            "contains",
+            "icontains",
+            "startswith",
+            "istartswith",
+            "endswith",
+            "iendswith",
+        ]:
             return value, has_escaped_character
 
         if isinstance(value, ormar.Model):
@@ -183,7 +194,9 @@ class QueryClause:
             # enable escape modifier
             for char in ESCAPE_CHARACTERS:
                 value = value.replace(char, f"\\{char}")
-        value = f"%{value}%"
+        prefix = "%" if "start" not in op else ""
+        sufix = "%" if "end" not in op else ""
+        value = f"{prefix}{value}{sufix}"
 
         return value, has_escaped_character
 

tests/test_models.py

@@ -374,3 +374,33 @@ async def test_model_choices():
             await Country.objects.create(
                 name=name, taxed=taxed, country_code=country_code
             )
+
+
+@pytest.mark.asyncio
+async def test_start_and_end_filters():
+    async with database:
+        async with database.transaction(force_rollback=True):
+            await User.objects.create(name="Markos Uj")
+            await User.objects.create(name="Maqua Bigo")
+            await User.objects.create(name="maqo quidid")
+            await User.objects.create(name="Louis Figo")
+            await User.objects.create(name="Loordi Kami")
+            await User.objects.create(name="Yuuki Sami")
+
+            users = await User.objects.filter(name__startswith="Mar").all()
+            assert len(users) == 1
+
+            users = await User.objects.filter(name__istartswith="ma").all()
+            assert len(users) == 3
+
+            users = await User.objects.filter(name__istartswith="Maq").all()
+            assert len(users) == 2
+
+            users = await User.objects.filter(name__iendswith="AMI").all()
+            assert len(users) == 2
+
+            users = await User.objects.filter(name__endswith="Uj").all()
+            assert len(users) == 1
+
+            users = await User.objects.filter(name__endswith="igo").all()
+            assert len(users) == 2