Port to WTForms 3.x

Fixes #103.

requirements.txt

@@ -5,5 +5,5 @@ hsluv~=0.0.2
 flask-babel~=1.0
 email-validator~=1.1
 environ-config~=20.0
-wtforms~=2.3
+wtforms~=3.0
 typing-extensions

snikket_web/admin.py

@@ -10,7 +10,6 @@ import aiohttp
 import quart.flask_patch
 
 import wtforms
-import wtforms.fields.html5
 
 from quart import (
     Blueprint,

snikket_web/infra.py

@@ -8,7 +8,6 @@ import quart.flask_patch  # noqa:F401
 from quart import (
     current_app,
     request,
-    g,
 )
 
 import flask_babel
@@ -35,9 +34,6 @@ BYTE_UNIT_SCALE_MAP = [
 
 @babel.localeselector  # type:ignore
 def selected_locale() -> str:
-    # Needs mypy ignore because this is a free-for-all object and has no
-    # publicly known attributes.
-    g.language_header_accessed = True  # type: ignore
     selected = request.accept_languages.best_match(
         current_app.config['LANGUAGES']
     ) or current_app.config['LANGUAGES'][0]
@@ -72,12 +68,6 @@ def format_bytes(n: float) -> str:
     return "{} {}".format(n, unit)
 
 
-def add_vary_language_header(resp: quart.Response) -> quart.Response:
-    if getattr(g, "language_header_accessed", False):
-        resp.vary.add("Accept-Language")
-    return resp
-
-
 def init_templating(app: quart.Quart) -> None:
     app.template_filter("repr")(repr)
     app.template_filter("format_datetime")(flask_babel.format_datetime)
@@ -88,7 +78,6 @@ def init_templating(app: quart.Quart) -> None:
     app.template_filter("format_bytes")(format_bytes)
     app.template_filter("flatten")(flatten)
     app.template_filter("circle_name")(circle_name)
-    app.after_request(add_vary_language_header)
 
 
 def generate_error_id() -> str:

snikket_web/main.py

@@ -32,7 +32,7 @@ bp = quart.Blueprint("main", __name__)
 
 
 class LoginForm(BaseForm):
-    address = wtforms.TextField(
+    address = wtforms.StringField(
         _l("Address"),
         validators=[wtforms.validators.InputRequired()],
     )

snikket_web/user.py

@@ -59,7 +59,7 @@ _ACCESS_MODEL_CHOICES = [
 
 
 class ProfileForm(BaseForm):
-    nickname = wtforms.TextField(
+    nickname = wtforms.StringField(
         _l("Display name"),
     )