make min/max date range configurable

transporte/config.cfg.example

@@ -7,6 +7,9 @@ UPLOAD_DIR = 'uploads'
 SQLALCHEMY_DATABASE_URI = 'sqlite:///app.db'
 SQLALCHEMY_TRACK_MODIFICATIONS = False
 
+MIN_DATE = '2023-07-17'
+MAX_DATE = '2023-09-01'
+
 #The passwords in this list need to be unique.
 #Login via /login/password/<password>
 SPECIAL_HELPDESK_ACCOUNTS = [{

transporte/forms.py

-import datetime
+from datetime import datetime
 
+from flask import current_app as app
 from flask_wtf import FlaskForm
 from flask_wtf.file import FileField
 from wtforms import SelectField, StringField, SubmitField, TextAreaField
@@ -40,8 +41,8 @@ class TransportForm(FlaskForm):
         validators=[
             DataRequired(),
             DateRange(
-                min=datetime.date(year=2023, month=7, day=17),
-                max=datetime.date(year=2023, month=9, day=17),
+                min=datetime.strptime(app.config["MIN_DATE"], "%Y-%m-%d"),
+                max=datetime.strptime(app.config["MAX_DATE"], "%Y-%m-%d"),
             ),
         ],
     )