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main.py
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main.py
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import os
from flask import Flask, render_template, request, 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
from flask_gravatar import Gravatar
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
# app.config['SQLALCHEMY_DATABASE_URI'] = "sqlite:///blog.db"
app.config['SQLALCHEMY_DATABASE_URI'] = os.environ.get("DATABASE_URL", "sqlite:///blog.db") # change to line above for local work
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
db = SQLAlchemy(app)
# ******* login manager and user loader *********
login_manager = LoginManager()
login_manager.init_app(app)
@login_manager.user_loader
def load_user(user_id):
return User.query.get(int(user_id))
# ******* login manager and user loader *********
def admin_only(f):
@wraps(f)
def decorated_function(*args, **kwargs):
# If id is not 1 then return abort with 403 error
if current_user.id != 1:
print("admin only isn't 1")
return abort(403) # from flask import abort
# Otherwise continue with the route function
return f(*args, **kwargs)
return decorated_function
##CONFIGURE TABLES
##CREATE TABLE IN DB
class User(UserMixin, db.Model):
__tablename__ = "users" # parent
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(1000))
#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")
comments = relationship("Comment", back_populates="comment_author")
#Line below only required once, when creating DB.
db.create_all()
class BlogPost(db.Model):
__tablename__ = "blog_posts" # child
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"))
#Create reference to the User object, the "posts" refers to the posts protperty in the User class.
author = relationship("User", back_populates="posts")
# author = db.Column(db.String(250), nullable=False)
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 Relationship to comment *************#
comments = relationship("Comment", back_populates="parent_post")
db.create_all()
class Comment(db.Model):
__tablename__ = "comments" # child
id = db.Column(db.Integer, primary_key=True)
text = db.Column(db.Text, nullable=False)
comment_author_id = db.Column(db.Integer, db.ForeignKey("users.id"))
comment_author = relationship("User", back_populates="comments")
#***************Child Relationship to blogpost *************#
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()
@app.route('/')
def get_all_posts():
# new_post = BlogPost(
# title="Test Delete Later",
# subtitle="Test Delete Later",
# body="<p>This post is for the sole purpose of adding a column</p>",
# img_url="http://www.example.com",
# author_id=current_user.id,
# date=date.today().strftime("%B %d, %Y")
# )
#
# db.session.add(new_post)
# db.session.commit()
posts = BlogPost.query.all()
print(posts)
return render_template("index.html", all_posts=posts)
@app.route('/register', methods=['GET', 'POST'])
def register():
form = RegisterForm()
if form.validate_on_submit():
# if user exists
if User.query.filter_by(email=form.email.data).first():
print(User.query.filter_by(email=form.email.data).first())
# User already exists
flash("You've already signed up with that email, log in instead!")
return redirect(url_for('login'))
hash_and_salted_password = generate_password_hash(
form.password.data,method='pbkdf2:sha256',salt_length=8)
new_user = User(
email=form.email.data,
name=form.name.data,
password=hash_and_salted_password,
)
db.session.add(new_user)
db.session.commit()
# Log in and authenticate user after adding details to database.
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():
# print("login entered")
form = LoginForm()
if form.validate_on_submit():
email = form.email.data
password = form.password.data
# Find user by email entered.
user = User.query.filter_by(email=email).first()
# Email doesn't exist
if not user:
flash("That email does not exist, please try again.")
return redirect(url_for('login'))
# Password incorrect
elif not check_password_hash(user.password, password):
flash('Password incorrect, please try again.')
return redirect(url_for('login'))
# Email exists and password correct
# Check stored password hash against entered password hashed.
else:
login_user(user)
print("login user complete")
return redirect(url_for('get_all_posts'))
return render_template("login.html", form=form, current_user=current_user)
# return render_template(url_for('get_all_posts', logged_in=current_user.is_authenticated ))
@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):
requested_post = BlogPost.query.get(post_id)
form = CommentForm()
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(
text=form.comment_text.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, current_user=current_user, form=form)
@app.route("/about")
def about():
return render_template("about.html", current_user=current_user)
@app.route("/contact")
def contact():
return render_template("contact.html")
@app.route("/new-post",methods=["GET", "POST"])
# admin only is the decorator for the def admin_only function earlier
@admin_only
def add_new_post():
print("in add new post")
form = CreatePostForm()
if form.validate_on_submit():
print("inside if")
new_post = BlogPost(
title=form.title.data,
subtitle=form.subtitle.data,
body=form.body.data,
img_url=form.img_url.data,
# author=current_user
author_id=current_user.id,
date=date.today().strftime("%B %d, %Y")
)
print("outside new_post = Blogpost")
db.session.add(new_post)
print("db.session.add(new_post")
db.session.commit()
print("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>")
# admin only is the decorator for the def admin_only function earlier
@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 = edit_form.author.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, current_user=current_user)
@app.route("/delete/<int:post_id>")
# admin only is the decorator for the def admin_only function earlier
@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', current_user=current_user))
if __name__ == "__main__":
app.run()
# app.run(host='0.0.0.0', port=5000) #change to app.run() line above for local work so