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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, request
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 sqlite3 import IntegrityError, Error
from functools import wraps
from sqlalchemy.orm import relationship
from flask_login import UserMixin, LoginManager, login_user, current_user, logout_user, login_required
from forms import CreatePostForm, RegisterUserForm, LogInUserForm, CreateComment
from flask_gravatar import Gravatar
import os
app = Flask(__name__)
app.config['SECRET_KEY'] = os.environ.get("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
# "DATABASE_URL" to run in heroku.com
# "sqlite:///blog.db" to run in local form
app.config['SQLALCHEMY_DATABASE_URI'] = os.environ.get("DATABASE_URL", "sqlite:///blog.db")
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
db = SQLAlchemy(app)
# CONFIGURE TABLES
class User(db.Model, UserMixin):
__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)
# -- PARENT --
# 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("CommentPost", back_populates="comment_author")
# ------------
class BlogPost(db.Model, UserMixin):
__tablename__ = "blog_posts"
id = db.Column(db.Integer, primary_key=True)
# -- CHILD --
# Create Foreign Key, "users.id" the users refers to the tablename of User.
author_id = db.Column(db.Integer, db.ForeignKey('users.id'))
# Create reference to the User object, the "posts" refers to the posts protperty in the User class.
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)
# -- PARENT --
# "comment_author" refers to the comment_author property in the Comment class.
comments = relationship("CommentPost", back_populates="parent_post")
# ------------
class CommentPost(db.Model):
__tablename__ = "comments"
id = db.Column(db.Integer, primary_key=True)
# -- CHILD --
# "users.id" The users refers to the tablename of the Users class.
# "comments" refers to the comments property in the User class.
author_id = db.Column(db.Integer, db.ForeignKey('users.id'))
comment_author = relationship("User", back_populates="comments")
# - -
# "users.id" The users refers to the tablename of the Users class.
# "comments" refers to the comments property in the User class.
post_id = db.Column(db.Integer, db.ForeignKey('blog_posts.id'))
parent_post = relationship("BlogPost", back_populates="comments")
# -----------
text = db.Column(db.Text, nullable=False)
db.create_all()
login_manager = LoginManager()
login_manager.init_app(app)
@login_manager.user_loader
def load_user(user_id):
return User.query.get(int(user_id))
def admin_only(func):
@wraps(func)
def decorated_function(*args, **kwargs):
if current_user.get_id() != "1":
flash("Sign in as Administrator")
return redirect(url_for('login', next=request.url))
return func(*args, **kwargs)
return decorated_function
@app.route('/')
def get_all_posts():
posts = BlogPost.query.all()
return render_template("index.html.j2", all_posts=posts, current_user=current_user)
@app.route('/register', methods=["GET", "POST"])
def register():
form = RegisterUserForm()
if form.validate_on_submit():
password_hash_and_salted = generate_password_hash(password=request.form["password"],
method="pbkdf2:sha256", salt_length=8)
new_user = User(name=request.form["name"], email=request.form["email"], password=password_hash_and_salted)
db.session.add(new_user)
try:
db.session.commit()
except Error or IntegrityError:
flash("You've already signed up with that email, log in instead!")
return redirect(url_for("login"))
else:
login_user(new_user)
return redirect(url_for("get_all_posts"))
return render_template("register.html.j2", form=form)
@app.route('/login', methods=["GET", "POST"])
def login():
form = LogInUserForm()
if form.validate_on_submit():
user = User.query.filter_by(email=request.form["email"]).first()
try:
if check_password_hash(user.password, request.form["password"]):
login_user(user)
return redirect(url_for("get_all_posts"))
else:
flash("Password Incorrect")
except AttributeError:
flash("Invalid Email. Try Again")
return render_template("login.html.j2", form=form)
@app.route('/logout')
def logout():
logout_user()
return redirect(url_for('get_all_posts'))
@app.route("/post/<int:post_id>", methods=["GET", "POST"])
def show_post(post_id):
form = CreateComment()
requested_post = BlogPost.query.get(post_id)
if form.validate_on_submit():
if current_user.is_authenticated:
new_comment = CommentPost(comment_author=current_user, parent_post=requested_post, text=form.comment.data)
db.session.add(new_comment)
db.session.commit()
else:
flash("You need to login or register to comment.")
return redirect(url_for('login', next=request.url))
return render_template("post.html.j2", post=requested_post, current_user=current_user, form=form)
@app.route("/about")
def about():
return render_template("about.html.j2", current_user=current_user)
@app.route("/contact")
def contact():
return render_template("contact.html.j2", 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.j2", 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=post.author,
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.author = current_user
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.j2", form=edit_form, 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'))
if __name__ == "__main__":
app.run(debug=True)
# app.run(host='0.0.0.0', port=5000)