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app.py
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app.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 dotenv import load_dotenv
import os
from functools import wraps
load_dotenv()
app = Flask(__name__)
app.config["SECRET_KEY"] = os.environ["SECRET_KEY"]
ckeditor = CKEditor(app)
Bootstrap(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")
app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False
db = SQLAlchemy(app)
login_manager = LoginManager()
login_manager.init_app(app)
@login_manager.user_loader
def load_user(user_id):
return User.query.get(int(user_id))
class User(UserMixin, db.Model):
__tablename__ = "users"
id = db.Column(db.Integer, primary_key=True)
email = db.Column(db.String(100), unique=True)
password = db.Column(db.String(100))
name = db.Column(db.String(100))
# this will act like a list of BlogPost objects attached to each User.
# The "author" refers to the author property in the BlogPost class.
posts = relationship("BlogPost", back_populates="author")
# "comment_author" refers to the comment_author property in the Comment class.
comments = relationship("Comment", back_populates="comment_author")
class BlogPost(db.Model):
id = db.Column(db.Integer, primary_key=True)
# create Foreign Key, "users.id" the users refers to the tablename of User
author_id = db.Column(db.Integer, db.ForeignKey("users.id"))
author = relationship("User", back_populates="posts")
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)
comments = relationship("Comment", back_populates="parent_post")
class Comment(db.Model):
__tablename__ = "comments"
id = db.Column(db.Integer, primary_key=True)
post_id = db.Column(db.Integer, db.ForeignKey("blog_post.id"))
author_id = db.Column(db.Integer, db.ForeignKey("users.id"))
parent_post = relationship("BlogPost", back_populates="comments")
comment_author = relationship("User", back_populates="comments")
text = db.Column(db.Text, nullable=False)
with app.app_context():
db.create_all()
def admin_only(f):
@wraps(f)
def decorated_function(*args, **kwargs):
# if id isn't 1 then return abort with 403 error
if current_user.id != 1:
return abort(403)
# otherwise continue with the route function
return f(*args, **kwargs)
return decorated_function
@app.route("/")
def get_all_posts():
all_posts = BlogPost.query.all()
return render_template("index.html", posts=all_posts)
# register new user into the User database
@app.route("/register", methods=["GET", "POST"])
def register():
form = RegisterForm()
if form.validate_on_submit():
if User.query.filter_by(email=form.email.data).first():
flash("You've already signed up with that email, log in instead!")
return redirect(url_for("login"))
hashed_and_salted_pass = generate_password_hash(
form.password.data,
method="pbkdf2:sha256",
salt_length=8
)
new_user = User(
email=form.email.data,
password=hashed_and_salted_pass,
name=form.name.data
)
db.session.add(new_user)
db.session.commit()
login_user(new_user)
return redirect(url_for("get_all_posts"))
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():
email = form.email.data
password = form.password.data
user = User.query.filter_by(email=email).first()
if not user:
flash("That email does not exist, please try again.")
return redirect(url_for("login"))
elif not check_password_hash(user.password, password):
flash("Incorrect password, please try again.")
return redirect(url_for("login"))
else:
login_user(user)
return redirect(url_for("get_all_posts"))
return render_template("login.html", form=form, current_user=current_user)
@app.route("/logout")
def logout():
logout_user()
return redirect(url_for("get_all_posts"))
@app.route("/about")
def about():
return render_template("about.html", current_user=current_user)
@app.route("/post/<int:post_id>", methods=["GET", "POST"])
def show_full_post(post_id):
comment_form = CommentForm()
requested_post = BlogPost.query.get(post_id)
if comment_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(
text=comment_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, form=comment_form, 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,
author=current_user,
date=date.today().strftime("%B %d, %Y")
)
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
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,
author=current_user,
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_full_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
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("/contact")
def contact():
return render_template("contact.html", current_user=current_user)
if __name__ == "__main__":
app.run(debug=True)