routes.py file
import os
import secrets
from PIL import Image
from flask import render_template, url_for, flash, redirect, request, abort
from flaskblog import app, db, bcrypt
from flaskblog.forms import RegistrationForm, LoginForm, UpdateAccountForm, PostForm
from flaskblog.models import User, Post
from flask_login import login_user, current_user, logout_user, login_required
@app.route("/")
@app.route("/home")
def home():
page = request.args.get('page', 1, type=int)
posts = Post.query.order_by(Post.date_posted.desc()).paginate(page=page, per_page=5)
return render_template("home.html", posts=posts)
@app.route("/about")
def about():
return render_template("about.html", title="About")
@app.route("/register", methods=["GET", "POST"])
def register():
if current_user.is_authenticated:
return redirect(url_for("home"))
form = RegistrationForm()
if form.validate_on_submit():
hashed_password = bcrypt.generate_password_hash(form.password.data).decode(
"utf-8"
)
user = User(
username=form.username.data, email=form.email.data, password=hashed_password
)
db.session.add(user)
db.session.commit()
flash("Your account has been created! You are now able to log in", "success")
return redirect(url_for("login"))
return render_template("register.html", title="Register", form=form)
@app.route("/login", methods=["GET", "POST"])
def login():
if current_user.is_authenticated:
return redirect(url_for("home"))
form = LoginForm()
if form.validate_on_submit():
user = User.query.filter_by(email=form.email.data).first()
if user and bcrypt.check_password_hash(user.password, form.password.data):
login_user(user, remember=form.remember.data)
next_page = request.args.get("next")
return redirect(next_page) if next_page else redirect(url_for("home"))
else:
flash("Login Unsuccessful. Please check email and password", "danger")
return render_template("login.html", title="Login", form=form)
@app.route("/logout")
def logout():
logout_user()
return redirect(url_for("home"))
def save_picture(form_picture):
random_hex = secrets.token_hex(8)
_, f_ext = os.path.splitext(form_picture.filename)
picture_fn = random_hex + f_ext
picture_path = os.path.join(app.root_path, "static/profile_pics", picture_fn)
output_size = (125, 125)
i = Image.open(form_picture)
i.thumbnail(output_size)
i.save(picture_path)
return picture_fn
@app.route("/account", methods=["GET", "POST"])
@login_required
def account():
form = UpdateAccountForm()
if form.validate_on_submit():
if form.picture.data:
picture_file = save_picture(form.picture.data)
current_user.image_file = picture_file
current_user.username = form.username.data
current_user.email = form.email.data
db.session.commit()
flash("Your account has been updated!", "success")
return redirect(url_for("account"))
elif request.method == "GET":
form.username.data = current_user.username
form.email.data = current_user.email
image_file = url_for("static", filename="profile_pics/" + current_user.image_file)
return render_template(
"account.html", title="Account", image_file=image_file, form=form
)
@app.route("/post/new", methods=["GET", "POST"])
@login_required
def new_post():
form = PostForm()
if form.validate_on_submit():
post = Post(
title=form.title.data, content=form.content.data, author=current_user
)
db.session.add(post)
db.session.commit()
flash("Your post has been created!", "success")
return redirect(url_for("home"))
return render_template('create_post.html', title='New Post',
form=form, legend='New Post')
@app.route("/post/<int:post_id>")
def post(post_id):
post = Post.query.get_or_404(post_id)
return render_template('post.html', title=post.title, post=post)
@app.route("/post/<int:post_id>/update", methods=['GET', 'POST'])
@login_required
def update_post(post_id):
post = Post.query.get_or_404(post_id)
if post.author != current_user:
abort(403)
form = PostForm()
if form.validate_on_submit():
post.title = form.title.data
post.content = form.content.data
db.session.commit()
flash('Your post has been updated!', 'success')
return redirect(url_for('post', post_id=post.id))
elif request.method == 'GET':
form.title.data = post.title
form.content.data = post.content
return render_template('create_post.html', title='Update Post',
form=form, legend='Update Post')
@app.route("/post/<int:post_id>/delete", methods=['POST'])
@login_required
def delete_post(post_id):
post = Post.query.get_or_404(post_id)
if post.author !=current_user:
abort(403)
db.session.delete(post)
db.session.commit()
flash('Your post has been deleted!', 'success')
return redirect(url_for('home'))
@app.route("/user/<str:username>")
def user_posts(username):
page = requests.args.get('page', 1, type=int)
user = User.query.filter_by(username=username).first_or_404()
posts = Post.query.filter_by(author=user)\
.order_by(Post.date_posted.desc())\
.paginate(page=page, per_page=5)
return render_template('user_posts.html.', posts=posts, user=user)
errorError:Traceback (most recent call last):
File "C:\Python37\kodovi\Environments\Flask_Blog\run.py", line 1, in <module>
from flaskblog import app
File "C:\Python37\kodovi\Environments\Flask_Blog\flaskblog\__init__.py", line 16, in <module>
from flaskblog import routes
File "C:\Python37\kodovi\Environments\Flask_Blog\flaskblog\routes.py", line 155, in <module>
@app.route("/user/<str:username>")
File "C:\Python37\lib\site-packages\flask\app.py", line 1251, in decorator
self.add_url_rule(rule, endpoint, f, **options)
File "C:\Python37\lib\site-packages\flask\app.py", line 67, in wrapper_func
return f(self, *args, **kwargs)
File "C:\Python37\lib\site-packages\flask\app.py", line 1217, in add_url_rule
self.url_map.add(rule)
File "C:\Python37\lib\site-packages\werkzeug\routing.py", line 1388, in add
rule.bind(self)
File "C:\Python37\lib\site-packages\werkzeug\routing.py", line 730, in bind
self.compile()
File "C:\Python37\lib\site-packages\werkzeug\routing.py", line 790, in compile
_build_regex(self.rule if self.is_leaf else self.rule.rstrip("/"))
File "C:\Python37\lib\site-packages\werkzeug\routing.py", line 779, in _build_regex
convobj = self.get_converter(variable, converter, c_args, c_kwargs)
File "C:\Python37\lib\site-packages\werkzeug\routing.py", line 738, in get_converter
raise LookupError("the converter %r does not exist" % converter_name)
LookupError: the converter 'str' does not exist