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server.py
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server.py
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from backend.forms import *
from backend.util import send_contact_email
from backend.config import ADMINISTRATOR_USERNAME
from werkzeug.security import generate_password_hash, check_password_hash
from werkzeug.datastructures import MultiDict
from flask_ckeditor import CKEditor, CKEditorField
from flask_sqlalchemy import SQLAlchemy
from flask_bootstrap import Bootstrap
from flask_login import LoginManager, login_user, login_required, logout_user, current_user, UserMixin
from flask import Flask, render_template, redirect, url_for, request, flash
# from flask_gravatar import Gravatar
from datetime import datetime as dt
import os
from dotenv import load_dotenv
from functools import wraps
load_dotenv() # Setup environment variables before server starts
# APP SETUP
app = Flask(__name__)
app.config['SECRET_KEY'] = '8BYkEfBA6O6donzWlSihBXox7C0sKR6b'
ckeditor = CKEditor(app)
Bootstrap(app)
# USER SESSION SETUP
login_manager = LoginManager()
login_manager.login_view = 'login'
login_manager.init_app(app)
# DATABASE SETUP
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///backend/db.sqlite'
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
db = SQLAlchemy(app)
db.app = app
# gravatar = Gravatar(app,
# size=100,
# rating='g',
# default='retro',
# force_default=False,
# force_lower=False,
# use_ssl=False,
# base_url=None)
class User(UserMixin, db.Model):
__tablename__ = "user"
username = db.Column(db.String(250), unique=True,
nullable=False, primary_key=True)
email = db.Column(db.String(250), nullable=False)
password = db.Column(db.String(250), unique=True, nullable=False)
posts = db.relationship('BlogPost', backref='user')
comments = db.relationship('Comment', backref='user')
def get_id(self):
return self.username
class BlogPost(db.Model):
__tablename__ = "blogpost"
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(250), unique=True, nullable=False)
subtitle = db.Column(db.String(250), nullable=False)
date = db.Column(db.String(250), nullable=False)
body = db.Column(db.Text, nullable=False)
author = db.Column(db.String(250), db.ForeignKey('user.username'), nullable=False)
img_url = db.Column(db.String(250), nullable=True)
comments = db.relationship('Comment', backref='blogpost')
class Comment(db.Model):
__tablename__ = "comment"
id = db.Column(db.Integer, primary_key=True)
body = db.Column(db.Text, nullable=False)
date = db.Column(db.String(250), nullable=False)
post = db.Column(db.Integer, db.ForeignKey('blogpost.id'), nullable=False)
author = db.Column(db.String(250), db.ForeignKey('user.username'), nullable=False)
def load_posts(id: int = None):
if id is None:
return BlogPost.query.order_by(BlogPost.id.desc()).all()
else:
return BlogPost.query.filter_by(id=id).first()
def create_id():
try:
return BlogPost.query.order_by(BlogPost.id.desc()).first().id + 1
except AttributeError:
# If there are no posts in the database, return 1
return 1
def create_comment_id():
try:
return Comment.query.order_by(Comment.id.desc()).first().id + 1
except AttributeError:
# If there are no comments in the database, return 1
return 1
# ADMINSTRATOR ONLY DECORATOR:
def admin_only(f):
@wraps(f)
def decorated_function(*args, **kwargs):
if current_user.username != ADMINISTRATOR_USERNAME:
flash('Only the site administrator is authorized to access this page.')
return redirect(url_for('error'))
return f(*args, **kwargs)
return decorated_function
@login_manager.user_loader
def load_user(username):
# since the username is just the primary key of our user table, use it in the query for the user
return User.query.get(str(username))
# CREATE ALL TABLES AUTOMATICALLY - WARNING - THIS WILL DELETE ALL DATA IN THE DATABASE
# db.create_all()
# APP ROUTES
@app.route('/')
def home():
by_user = request.args.get('username')
return render_template("index.html", posts=load_posts(), username=by_user)
@app.route('/about')
def about():
return render_template('about.html')
@app.route('/contact', methods=["GET", "POST"])
def contact():
if request.method == "POST":
subject = f"Contact Form Submission from {request.form['name']}"
message = f"Name: {request.form['name']}\n" \
f"Email: {request.form['email']}\n" \
f"Phone #: {request.form['phone']}\n" \
f"\nMessage:\n{request.form['message']}"
send_contact_email(subject, message)
return render_template('contact.html', form_submitted=True)
else:
return render_template('contact.html', form_submitted=False)
@app.route('/post')
def post():
return render_template('post.html')
@app.route('/post/<int:p_id>', methods=["GET", "POST"])
def get_post(p_id: int):
form = CommentForm()
if form.validate_on_submit():
if os.name != "nt":
date_now = dt.now().strftime("%B %d, %Y at %-I:%M%p %Z")
else:
date_now = dt.now().strftime("%B %d, %Y at %I:%M%p %Z")
comment = Comment(
id=create_comment_id(),
body=form.body.data,
date=date_now,
author=current_user.username,
post=p_id
)
db.session.add(comment)
db.session.commit()
flash('Your comment has been posted!')
return redirect(url_for('get_post', p_id=p_id))
return render_template('post.html', post=load_posts(p_id), form=form, comments=Comment.query.filter_by(post=p_id).all())
@app.route('/edit-post/<int:p_id>', methods=["GET", "POST"])
@login_required
@admin_only
def edit_post(p_id: int):
post = load_posts(p_id)
form = CreatePostForm(data=MultiDict(post.__dict__))
if form.validate_on_submit():
# Post from database:
post.title = form.title.data
post.subtitle = form.subtitle.data
post.body = form.body.data
post.img_url = form.img_url.data
db.session.commit()
return redirect(url_for('home'))
return render_template('new-post.html', form=form, editing=True, post_id=p_id)
@app.route('/delete-post/<int:p_id>', methods=["GET"])
@login_required
@admin_only
def delete_post(p_id: int):
post = load_posts(p_id)
db.session.delete(post)
db.session.commit()
return redirect(url_for('home'))
@app.route('/new-post', methods=["GET", "POST"])
@login_required
@admin_only
def new_post():
form = CreatePostForm()
if form.validate_on_submit():
if os.name != "nt":
date_now = dt.now().strftime("%B %d, %Y at %-I:%M%p %Z")
else:
date_now = dt.now().strftime("%B %d, %Y at %I:%M%p %Z")
post = BlogPost(id=create_id(),
title=form.title.data,
subtitle=form.subtitle.data,
date=date_now,
body=form.body.data,
author=current_user.username,
img_url=form.img_url.data)
db.session.add(post)
db.session.commit()
return redirect(url_for('home'))
return render_template('new-post.html', form=form, editing=False)
# Create a new route to register a new user
@app.route('/register', methods=['GET', 'POST'])
def register():
form = RegistrationForm(request.form)
if request.method == 'POST' and form.validate():
# Check if user already exists:
if User.query.filter_by(username=form.username.data).first():
flash('Username already exists! Please try a different one.')
return redirect(url_for('register'))
# Add new user to the database
user = User(username=form.username.data,
email=form.email.data,
password=generate_password_hash(form.password.data, method='sha256'))
db.session.add(user)
db.session.commit()
login_user(user)
return redirect(url_for('home'))
return render_template('register.html', form=form)
# Create a new route to handle logins
@app.route('/login', methods=['GET', 'POST'])
def login():
form = LoginForm(request.form)
if current_user.is_authenticated:
return redirect(url_for('home'))
if request.method == 'POST' and form.validate():
# Check if user exists
user = User.query.filter_by(username=form.username.data).first()
if user:
# Check if password is correct
if check_password_hash(user.password, form.password.data):
login_user(user)
return redirect(url_for('home'))
else:
flash('Invalid password. Please try again.')
return redirect(url_for('login'))
else:
flash('Username does not exist. Please try again.')
return redirect(url_for('login'))
return render_template('login.html', form=form)
# logout authenticated user
@app.route('/logout')
@login_required
def logout():
logout_user()
return redirect(url_for('home'))
# route for error
@app.route('/error')
def error():
return render_template('error.html')
if __name__ == "__main__":
app.run(debug=True)