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main.py
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main.py
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from flask import Flask, render_template, redirect, url_for, flash, abort
from flask_bootstrap import Bootstrap
from flask_ckeditor import CKEditor
from datetime import date
from werkzeug.security import generate_password_hash, check_password_hash
from flask_sqlalchemy import SQLAlchemy
from sqlalchemy.orm import relationship
from flask_login import UserMixin, login_user, LoginManager, login_required, current_user, logout_user
from forms import CreatePostForm, RegisterForm, LogInForm, CommentForm
from flask_gravatar import Gravatar
from functools import wraps
import os
app = Flask(__name__)
app.config['SECRET_KEY'] = 'jhblugliug;iu;kjb;k'
ckeditor = CKEditor(app)
Bootstrap(app)
login_manager = LoginManager()
login_manager.init_app(app)
gravatar = Gravatar(app,
size=100,
rating='g',
default='retro',
force_default=False,
force_lower=False,
use_ssl=False,
base_url=None)
##CONNECT TO DB
app.config['SQLALCHEMY_DATABASE_URI'] = os.environ.get('DATABASE_URL')
# USE SQLite Locally
if app.config['SQLALCHEMY_DATABASE_URI'] == None:
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///blog.db'
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
db = SQLAlchemy(app)
##CONFIGURE TABLES
class BlogPost(db.Model):
__tablename__ = "blog_posts"
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)
img_url = db.Column(db.String(250), nullable=False)
# RELATIONSHIP MANY TO ONE WITH USER
author_id = db.Column(db.Integer, db.ForeignKey("users.id"))
author = relationship("User", back_populates='posts')
# RELATIONSHIP WITH COMMENTS
comments = relationship("Comment", back_populates="parent_post")
class Comment(db.Model):
__tablename__ = "comment"
id = db.Column(db.Integer, primary_key=True)
body = db.Column(db.Text, nullable=False)
# RELATIONSHIP WITH BLOGPOST
post_id = db.Column(db.Integer, db.ForeignKey("blog_posts.id"))
parent_post = relationship("BlogPost", back_populates='comments')
# RELATIONSHIP WITH USER
author_id = db.Column(db.Integer, db.ForeignKey("users.id"))
comment_author = relationship("User", back_populates="comments")
class User(UserMixin, db.Model):
__tablename__ = "users"
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(250), nullable=False)
email = db.Column(db.String(250), unique=True, nullable=False)
password = db.Column(db.String(250), nullable=False)
# RELATIONSHIP ONE TO MANY WITH BLOGPOSTS
posts = relationship("BlogPost", back_populates='author')
# RELATIONSHIP WITH COMMENTS
comments = relationship("Comment", back_populates='comment_author')
# db.create_all()
# ADMIN ONLY DECORATOR
def admin_only(function):
@wraps(function)
def wrapper(*args, **kwargs):
if current_user.id != 1:
return abort(403)
return function(*args, **kwargs)
return wrapper
@login_manager.user_loader
def load_user(user_id):
return User.query.get(int(user_id))
@app.route('/')
def get_all_posts():
posts = BlogPost.query.all()
return render_template("index.html", all_posts=posts, current_user=current_user)
@app.route('/register', methods=['GET', 'POST'])
def register():
form = RegisterForm()
if form.validate_on_submit():
new_user = User()
new_user.name = form.name.data
new_user.email = form.email.data
email = form.email.data
password = form.password.data
user = User.query.filter_by(email=email).first()
if user:
flash("This email already exists, Login Instead")
return redirect(url_for("login"))
else:
new_user.password = generate_password_hash(password, method='pbkdf2:sha256', salt_length=8)
db.session.add(new_user)
db.session.commit()
login_user(new_user)
return redirect(url_for("get_all_posts"))
else:
return render_template("register.html", form=form, current_user=current_user)
@app.route('/login', methods=['GET', 'POST'])
def login():
form = LogInForm()
if form.validate_on_submit():
user = User.query.filter_by(email=form.email.data).first()
if user:
if check_password_hash(user.password, form.password.data):
login_user(user)
return redirect(url_for('get_all_posts'))
else:
flash("Wrong Password, Try Again")
return redirect(url_for('login'))
else:
flash("This email is not registered yet.\nYou are invited to register!")
return redirect(url_for('login'))
return render_template("login.html", form=form, current_user=current_user)
@app.route('/logout')
@login_required
def logout():
logout_user()
return redirect(url_for('get_all_posts'))
@app.route("/post/<int:post_id>", methods=['GET', 'POST'])
@login_required
def show_post(post_id):
form = CommentForm()
requested_post = BlogPost.query.get(post_id)
requested_comments = Comment.query.filter_by(post_id=post_id)
if form.validate_on_submit():
if not current_user.is_authenticated:
flash("You need to login or register to comment.")
return redirect(url_for("login"))
new_comment = Comment(
body=form.comment.data,
comment_author=current_user,
parent_post=requested_post
)
db.session.add(new_comment)
db.session.commit()
return render_template("post.html", post=requested_post, all_comments=requested_comments, form=form, current_user=current_user)
@app.route("/about")
def about():
return render_template("about.html", current_user=current_user)
@app.route("/contact")
def contact():
return render_template("contact.html", current_user=current_user)
@app.route("/new-post", methods=['GET', 'POST'])
@admin_only
def add_new_post():
form = CreatePostForm()
if form.validate_on_submit():
new_post = BlogPost(
title=form.title.data,
subtitle=form.subtitle.data,
body=form.body.data,
img_url=form.img_url.data,
date=date.today().strftime("%B %d, %Y"),
author=current_user,
)
db.session.add(new_post)
db.session.commit()
return redirect(url_for("get_all_posts"))
return render_template("make-post.html", form=form, current_user=current_user)
@app.route("/edit-post/<int:post_id>", methods=['GET', 'POST'])
@admin_only
@login_required
def edit_post(post_id):
post = BlogPost.query.get(post_id)
edit_form = CreatePostForm(
title=post.title,
subtitle=post.subtitle,
img_url=post.img_url,
body=post.body
)
if edit_form.validate_on_submit():
post.title = edit_form.title.data
post.subtitle = edit_form.subtitle.data
post.img_url = edit_form.img_url.data
post.body = edit_form.body.data
db.session.commit()
return redirect(url_for("show_post", post_id=post.id))
return render_template("make-post.html", form=edit_form, is_edit=True, current_user=current_user)
@app.route("/delete/<int:post_id>")
@admin_only
@login_required
def delete_post(post_id):
post_to_delete = BlogPost.query.get(post_id)
db.session.delete(post_to_delete)
db.session.commit()
return redirect(url_for('get_all_posts'))
@app.route("/delete-comment/<int:comment_id>/<int:post_id>")
@admin_only
@login_required
def delete_comment(comment_id, post_id):
comment_to_delete = Comment.query.get(comment_id)
db.session.delete(comment_to_delete)
db.session.commit()
return redirect(url_for('show_post', post_id=post_id))
if __name__ == "__main__":
app.run(host='0.0.0.0', port=5000, debug=True)