fix: fix pydantic#170 issues

src/python-fastui/fastui/forms.py

@@ -1,5 +1,6 @@
 import json
 import typing as _t
+from contextlib import asynccontextmanager
 from itertools import groupby
 from mimetypes import MimeTypes
 from operator import itemgetter
@@ -34,7 +35,8 @@ def __class_getitem__(cls, model: _t.Type[FormModel]) -> fastapi_params.Depends:
 
 
 def fastui_form(model: _t.Type[FormModel]) -> fastapi_params.Depends:
-    async def run_fastui_form(request: fastapi.Request):
+    @asynccontextmanager
+    async def run_fastui_form_with_context(request: fastapi.Request):
         async with request.form() as form_data:
             model_data = unflatten(form_data)
 
@@ -46,6 +48,10 @@ async def run_fastui_form(request: fastapi.Request):
                     detail={'form': e.errors(include_input=False, include_url=False, include_context=False)},
                 )
 
+    async def run_fastui_form(request: fastapi.Request):
+        async with run_fastui_form_with_context(request) as obj:
+            yield obj
+
     return fastapi.Depends(run_fastui_form)
 
 

src/python-fastui/tests/test_forms.py

@@ -94,7 +94,7 @@ async def test_simple_form_submit():
 
     request = FakeRequest([('name', 'bar'), ('size', '123')])
 
-    m = await form_dep.dependency(request)
+    m = await form_dep.dependency(request).__anext__()
     assert isinstance(m, SimpleForm)
     assert m.model_dump() == {'name': 'bar', 'size': 123}
 
@@ -105,7 +105,7 @@ async def test_simple_form_submit_repeat():
     request = FakeRequest([('name', 'bar'), ('size', '123'), ('size', '456')])
 
     with pytest.raises(HTTPException) as exc_info:
-        await form_dep.dependency(request)
+        await form_dep.dependency(request).__anext__()
 
     # insert_assert(exc_info.value.detail)
     assert exc_info.value.detail == {
@@ -156,7 +156,7 @@ async def test_w_nested_form_submit():
 
     request = FakeRequest([('name', 'bar'), ('nested.x', '123')])
 
-    m = await form_dep.dependency(request)
+    m = await form_dep.dependency(request).__anext__()
     assert isinstance(m, FormWithNested)
     assert m.model_dump() == {'name': 'bar', 'nested': {'x': 123}}
 
@@ -190,7 +190,7 @@ async def test_file_submit():
     file = UploadFile(BytesIO(b'foobar'), size=6, filename='testing.txt')
     request = FakeRequest([('profile_pic', file)])
 
-    m = await fastui_form(FormWithFile).dependency(request)
+    m = await fastui_form(FormWithFile).dependency(request).__anext__()
     assert m.model_dump() == {'profile_pic': file}
 
 
@@ -200,7 +200,7 @@ async def test_file_submit_repeat():
     request = FakeRequest([('profile_pic', file1), ('profile_pic', file2)])
 
     with pytest.raises(HTTPException) as exc_info:
-        await fastui_form(FormWithFile).dependency(request)
+        await fastui_form(FormWithFile).dependency(request).__anext__()
 
     # insert_assert(exc_info.value.detail)
     assert exc_info.value.detail == {
@@ -239,15 +239,15 @@ async def test_file_constrained_submit():
     file = UploadFile(BytesIO(b'foobar'), size=16_000, headers=headers)
     request = FakeRequest([('profile_pic', file)])
 
-    m = await fastui_form(FormWithFileConstraint).dependency(request)
+    m = await fastui_form(FormWithFileConstraint).dependency(request).__anext__()
     assert m.model_dump() == {'profile_pic': file}
 
 
 async def test_file_constrained_submit_filename():
     file = UploadFile(BytesIO(b'foobar'), size=16_000, filename='image.png')
     request = FakeRequest([('profile_pic', file)])
 
-    m = await fastui_form(FormWithFileConstraint).dependency(request)
+    m = await fastui_form(FormWithFileConstraint).dependency(request).__anext__()
     assert m.model_dump() == {'profile_pic': file}
 
 
@@ -257,7 +257,7 @@ async def test_file_constrained_submit_too_big():
     request = FakeRequest([('profile_pic', file)])
 
     with pytest.raises(HTTPException) as exc_info:
-        await fastui_form(FormWithFileConstraint).dependency(request)
+        await fastui_form(FormWithFileConstraint).dependency(request).__anext__()
 
     # insert_assert(exc_info.value.detail)
     assert exc_info.value.detail == {
@@ -277,7 +277,7 @@ async def test_file_constrained_submit_wrong_type():
     request = FakeRequest([('profile_pic', file)])
 
     with pytest.raises(HTTPException) as exc_info:
-        await fastui_form(FormWithFileConstraint).dependency(request)
+        await fastui_form(FormWithFileConstraint).dependency(request).__anext__()
 
     # insert_assert(exc_info.value.detail)
     assert exc_info.value.detail == {
@@ -323,7 +323,7 @@ async def test_multiple_files_single():
     file = UploadFile(BytesIO(b'foobar'), size=16_000, filename='image.png')
     request = FakeRequest([('files', file)])
 
-    m = await fastui_form(FormMultipleFiles).dependency(request)
+    m = await fastui_form(FormMultipleFiles).dependency(request).__anext__()
     assert m.model_dump() == {'files': [file]}
 
 
@@ -332,7 +332,7 @@ async def test_multiple_files_multiple():
     file2 = UploadFile(BytesIO(b'foobar'), size=6, filename='image2.png')
     request = FakeRequest([('files', file1), ('files', file2)])
 
-    m = await fastui_form(FormMultipleFiles).dependency(request)
+    m = await fastui_form(FormMultipleFiles).dependency(request).__anext__()
     assert m.model_dump() == {'files': [file1, file2]}
 
 
@@ -379,7 +379,7 @@ def test_fixed_tuple():
 async def test_fixed_tuple_submit():
     request = FakeRequest([('foo.0', 'bar'), ('foo.1', '123'), ('foo.2', '456')])
 
-    m = await fastui_form(FixedTuple).dependency(request)
+    m = await fastui_form(FixedTuple).dependency(request).__anext__()
     assert m.model_dump() == {'foo': ('bar', 123, 456)}
 
 
@@ -426,7 +426,7 @@ def test_fixed_tuple_nested():
 async def test_fixed_tuple_nested_submit():
     request = FakeRequest([('bar.foo.0', 'bar'), ('bar.foo.1', '123'), ('bar.foo.2', '456')])
 
-    m = await fastui_form(NestedTuple).dependency(request)
+    m = await fastui_form(NestedTuple).dependency(request).__anext__()
     assert m.model_dump() == {'bar': {'foo': ('bar', 123, 456)}}