Ошибки...

.flaskenv.example

@@ -1 +1,4 @@
 FLASK_APP=microblog.py
+FLASK_ENV=development
+FLASK_DEBUG=true
+FLASK_RUN_RELOAD=true

README.md

@@ -1,2 +1,8 @@
 Код приложения по серии туториалов 
 https://habr.com/ru/articles/804245/
+
+Запуск отладочного мэйл сервера
+
+```commandline
+aiosmtpd -n -c aiosmtpd.handlers.Debugging -l localhost:8025
+```

app/errors.py

@@ -0,0 +1,11 @@
+from flask import render_template
+from app import app, db
+
+@app.errorhandler(404)
+def not_found_error(error):
+    return render_template('404.html'), 404
+
+@app.errorhandler(500)
+def internal_error(error):
+    db.session.rollback()
+    return render_template('500.html'), 500

app/forms.py

@@ -4,8 +4,6 @@ from wtforms.validators import ValidationError, DataRequired, Email, EqualTo
 import sqlalchemy as sa
 from app import db
 from app.models import User
-from wtforms import TextAreaField
-from wtforms.validators import Length
 
 
 class LoginForm(FlaskForm):
@@ -34,8 +32,3 @@ class RegistrationForm(FlaskForm):
             User.email == email.data))
         if user is not None:
             raise ValidationError('Please use a different email address.')
-
-class EditProfileForm(FlaskForm):
-    username = StringField('Username', validators=[DataRequired()])
-    about_me = TextAreaField('About me', validators=[Length(min=0, max=140)])
-    submit = SubmitField('Submit')

app/models.py

@@ -5,7 +5,6 @@ import sqlalchemy.orm as so
 from flask_login import UserMixin
 from werkzeug.security import generate_password_hash, check_password_hash
 from app import db, login
-from hashlib import md5
 
 
 class User(UserMixin, db.Model):
@@ -18,9 +17,6 @@ class User(UserMixin, db.Model):
 
     posts: so.WriteOnlyMapped['Post'] = so.relationship(
         back_populates='author')
-    about_me: so.Mapped[Optional[str]] = so.mapped_column(sa.String(140))
-    last_seen: so.Mapped[Optional[datetime]] = so.mapped_column(
-        default=lambda: datetime.now(timezone.utc))
 
     def __repr__(self):
         return '<User {}>'.format(self.username)
@@ -31,10 +27,6 @@ class User(UserMixin, db.Model):
     def check_password(self, password):
         return check_password_hash(self.password_hash, password)
 
-    def avatar(self, size):
-        digest = md5(self.email.lower().encode('utf-8')).hexdigest()
-        return f'https://www.gravatar.com/avatar/{digest}?d=identicon&s={size}'
-
 
 @login.user_loader
 def load_user(id):

app/routes.py

@@ -4,15 +4,8 @@ from flask_login import login_user, logout_user, current_user, login_required
 import sqlalchemy as sa
 from app import app, db
 from app.forms import LoginForm, RegistrationForm
-from app.forms import EditProfileForm
 from app.models import User
-from datetime import datetime, timezone
 
-@app.before_request
-def before_request():
-    if current_user.is_authenticated:
-        current_user.last_seen = datetime.now(timezone.utc)
-        db.session.commit()
 
 @app.route('/')
 @app.route('/index')
@@ -69,29 +62,3 @@ def register():
         flash('Congratulations, you are now a registered user!')
         return redirect(url_for('login'))
     return render_template('register.html', title='Register', form=form)
-
-@app.route('/user/<username>')
-@login_required
-def user(username):
-    user = db.first_or_404(sa.select(User).where(User.username == username))
-    posts = [
-        {'author': user, 'body': 'Test post #1'},
-        {'author': user, 'body': 'Test post #2'}
-    ]
-    return render_template('user.html', user=user, posts=posts)
-
-@app.route('/edit_profile', methods=['GET', 'POST'])
-@login_required
-def edit_profile():
-    form = EditProfileForm()
-    if form.validate_on_submit():
-        current_user.username = form.username.data
-        current_user.about_me = form.about_me.data
-        db.session.commit()
-        flash('Your changes have been saved.')
-        return redirect(url_for('edit_profile'))
-    elif request.method == 'GET':
-        form.username.data = current_user.username
-        form.about_me.data = current_user.about_me
-    return render_template('edit_profile.html', title='Edit Profile',
-                           form=form)

app/templates/404.html

@@ -0,0 +1,6 @@
+{% extends "base.html" %}
+
+{% block content %}
+    <h1>File Not Found</h1>
+    <p><a href="{{ url_for('index') }}">Back</a></p>
+{% endblock %}

app/templates/500.html

@@ -0,0 +1,7 @@
+{% extends "base.html" %}
+
+{% block content %}
+    <h1>An unexpected error has occurred</h1>
+    <p>The administrator has been notified. Sorry for the inconvenience!</p>
+    <p><a href="{{ url_for('index') }}">Back</a></p>
+{% endblock %}

app/templates/base.html

@@ -14,7 +14,6 @@
             {% if current_user.is_anonymous %}
             <a href="{{ url_for('login') }}">Login</a>
             {% else %}
-          <a href="{{ url_for('user', username=current_user.username) }}">Profile</a>
             <a href="{{ url_for('logout') }}">Logout</a>
             {% endif %}
         </div>

config.py

@@ -6,3 +6,9 @@ class Config:
   SECRET_KEY = os.environ.get('SECRET_KEY') or 'you-will-never-guess'
   SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL') or \
   'sqlite:///' + os.path.join(basedir, 'app.db')
+  MAIL_SERVER = os.environ.get('MAIL_SERVER')
+  MAIL_PORT = int(os.environ.get('MAIL_PORT') or 25)
+  MAIL_USE_TLS = os.environ.get('MAIL_USE_TLS') is not None
+  MAIL_USERNAME = os.environ.get('MAIL_USERNAME')
+  MAIL_PASSWORD = os.environ.get('MAIL_PASSWORD')
+  ADMINS = ['your-email@example.com']