def register():
if request.method == "POST":
username = request.form["username"]
password = request.form["password"]
db = get_db()
error = None
if not username:
error = "Login jest wymagany!."
elif not password:
error = "Hasło jest wymagane!"
elif (db.execute("SELECT id FROM user WHERE username = ?",
(username, )).fetchone() is not None):
error = f"Użytkownik {username} już istnieje!."
if error is None:
db.execute(
"INSERT INTO user (username, password) VALUES (?, ?)",
(username, generate_password_hash(password)),
)
db.commit()
return redirect(url_for("auth.login"))
flash(error)
return render_template("auth/register.html")
def index():
db = get_db()
posts = db.execute(
"SELECT p.id, title, body, created, author_id, username"
" FROM post p JOIN user u ON p.author_id = u.id"
" ORDER BY created DESC"
).fetchall()
return render_template("blog/index.html", posts=posts)
def load_logged_in_user():
user_id = session.get("user_id")
if user_id is None:
g.user = None
else:
g.user = (get_db().execute("SELECT * FROM user WHERE id = ?",
(user_id, )).fetchone())
def get_post(id, check_author=True):
post = (
get_db()
.execute(
"SELECT p.id, title, body, created, author_id, username"
" FROM post p JOIN user u ON p.author_id = u.id"
" WHERE p.id = ?",
(id,),
)
.fetchone()
)
if post is None:
abort(404, f"Post id {id} doesn't exist.")
if check_author and post["author_id"] != g.user["id"]:
abort(403)
return post
def update(id):
post = get_post(id)
if request.method == "POST":
title = request.form["title"]
body = request.form["body"]
error = None
if not title:
error = "Tytuł jest wymagany."
if error is not None:
flash(error)
else:
db = get_db()
db.execute(
"UPDATE post SET title = ?, body = ? WHERE id = ?", (title, body, id)
)
db.commit()
return redirect(url_for("blog.index"))
return render_template("blog/update.html", post=post)
def create():
if request.method == "POST":
title = request.form["title"]
body = request.form["body"]
error = None
if not title:
error = "Title is required."
if error is not None:
flash(error)
else:
db = get_db()
db.execute(
"INSERT INTO post (title, body, author_id) VALUES (?, ?, ?)",
(title, body, g.user["id"]),
)
db.commit()
return redirect(url_for("blog.index"))
return render_template("blog/create.html")
def login():
if request.method == "POST":
username = request.form["username"]
password = request.form["password"]
db = get_db()
error = None
user = db.execute("SELECT * FROM user WHERE username = ?",
(username, )).fetchone()
if user is None:
error = "Nieprawidłowy login."
elif not check_password_hash(user["password"], password):
error = "Nieprawidłowe hasło."
if error is None:
session.clear()
session["user_id"] = user["id"]
return redirect(url_for("index"))
flash(error)
return render_template("auth/login.html")
def delete(id):
get_post(id)
db = get_db()
db.execute("DELETE FROM post WHERE id = ?", (id,))
db.commit()
return redirect(url_for("blog.index"))