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app.py
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app.py
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import os
from flask import (
Flask, flash, render_template,
redirect, request, session, url_for, flash,
redirect, session)
from flask_pymongo import PyMongo
from flask_ckeditor import CKEditor
from flask_bootstrap import Bootstrap
from bson.objectid import ObjectId
from forms import RegisterForm, LoginForm, CreatePostForm, CommentForm
from werkzeug.security import generate_password_hash, check_password_hash
from datetime import date
if os.path.exists("env.py"):
import env
app = Flask(__name__)
app.config["MONGO_DBNAME"] = os.environ.get("MONGO_DBNAME")
app.config["MONGO_URI"] = os.environ.get("MONGO_URI")
app.secret_key = os.environ.get("SECRET_KEY")
Bootstrap(app)
ckeditor = CKEditor(app)
mongo = PyMongo(app)
# ---------------- #
# APP ROUTES #
# ---------------- #
# ----- HOME ----- #
@app.route("/")
def get_all_posts():
'''
Read all blog posts from the database.
'''
posts = list(mongo.db.blog_posts.find())
return render_template("index.html", all_posts=posts)
# ----- REGISTER ----- #
@app.route('/register', methods=["GET", "POST"])
def register():
'''
Sign up for a new account.
'''
form = RegisterForm()
if form.validate_on_submit():
# check if email already exists in database
existing_user = mongo.db.users.find_one(
{"email": form.email.data})
if existing_user:
flash("You've already signed up with that email, log in instead!")
return redirect(url_for('login'))
# hash and salt the password
hash_and_salted_password = generate_password_hash(
form.password.data,
method='pbkdf2:sha256',
salt_length=8
)
new_user = {
"email": form.email.data,
"password": hash_and_salted_password,
"name": form.name.data
}
# insert new_user into the database
mongo.db.users.insert_one(new_user)
# put the new user into 'session' cookie
session["user"] = form.name.data
flash("Registration Successful")
return redirect(url_for("profile", username=session["user"]))
return render_template("register.html", form=form)
# ----- LOGIN ----- #
@app.route('/login', methods=["GET", "POST"])
def login():
'''
Login to the site.
Validation included.
'''
form = LoginForm()
if form.validate_on_submit():
email = form.email.data
password = form.password.data
# check if email already exists
existing_user = mongo.db.users.find_one({"email": email})
# if email doesn't exist or password incorrect
if not existing_user:
flash("That email or password does not exist, please try again.")
return redirect(url_for('login'))
elif not check_password_hash(existing_user["password"], password):
flash('That email and password dont match, please try again.')
return redirect(url_for('login'))
else:
session["user"] = existing_user['name']
flash(f"Welcome Back, {existing_user['name'].capitalize()}")
return redirect(
url_for("profile", username=session["user"]))
return render_template("login.html", form=form)
# ----- PROFILE PAGE ----- #
@app.route("/profile/<username>", methods=["GET", "POST"])
def profile(username):
'''
Direct the user to their Profile page.
Retrieve all the users Posts.
'''
username = mongo.db.users.find_one(
{"name": session["user"]})["name"]
posts = mongo.db.blog_posts.find({"author": username})
# if logged in
if session["user"]:
return render_template("profile.html", username=username, posts=posts)
# if not logged in, return to login page
return redirect(url_for("login"))
# ----- LOGOUT ----- #
@app.route("/logout")
def logout():
'''
Logout the user.
Redirect the user to the home page.
'''
session.pop("user")
return redirect(url_for("get_all_posts"))
# ----- READ A POST BY ITS ID ----- #
@app.route("/post/<post_id>", methods=["GET", "POST"])
def show_post(post_id):
'''
Read a Post by Id.
Allow the user to Comment if logged in.
'''
form = CommentForm()
# find the requested post
requested_post = mongo.db.blog_posts.find_one({"_id": ObjectId(post_id)})
requested_post_comments = mongo.db.blog_comments.find(
{"parent_post": ObjectId(post_id)})
# commenting on a post
if form.validate_on_submit():
if not session["user"]:
flash("You need to login or register to comment.")
return redirect(url_for("login"))
new_comment = {
"text": form.comment_text.data,
"comment_author": session["user"],
"parent_post": ObjectId(post_id)
}
mongo.db.blog_comments.insert_one(new_comment)
return render_template("post.html", post=requested_post,
comments=requested_post_comments, form=form)
# ----- CREATE A NEW POST ----- #
@app.route("/create-post", methods=["GET", "POST"])
def create_post():
'''
Create a new Post.
Inject all form data to a new blog post document on submit.
'''
if "user" in session:
# create a Form for data entry
form = CreatePostForm()
if form.validate_on_submit():
new_post = {
"title": form.title.data,
"subtitle": form.subtitle.data,
"body": form.body.data,
"img_url": form.img_url.data,
"author": session["user"],
"date": date.today().strftime("%B %d, %Y")
}
mongo.db.blog_posts.insert_one(new_post)
flash("Post Successfully Added")
return redirect(url_for("get_all_posts"))
return render_template("create_post.html", form=form)
else:
return redirect(url_for("login"))
# ----- EDIT A POST BY ID ----- #
@app.route("/edit-post/<post_id>", methods=["GET", "POST"])
def edit_post(post_id):
'''
Edit a Post by Id.
Update all Post data on submit.
'''
post = mongo.db.blog_posts.find_one({"_id": ObjectId(post_id)})
edit_form = CreatePostForm(
title=post["title"],
subtitle=post["subtitle"],
img_url=post["img_url"],
author=session["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
mongo.db.blog_posts.update({"_id": ObjectId(post_id)}, post)
return redirect(url_for("show_post", post_id=post_id))
return render_template("create_post.html", form=edit_form, is_edit=True)
# ----- DELETE A POST BY ID ----- #
@app.route("/delete/<post_id>")
def delete_post(post_id):
'''
Delete a Post by Id.
Redirect back to main page on submit.
'''
mongo.db.blog_posts.remove({"_id": ObjectId(post_id)})
flash("Post Successfully Deleted")
return redirect(url_for('get_all_posts'))
# ----- DELETE A COMMENT BY ID ----- #
@app.route("/delete_comment/<comment_id>")
def delete_comment(comment_id):
'''
Delete a Comment by Id.
'''
mongo.db.blog_comments.remove({"_id": ObjectId(comment_id)})
flash("Comment Successfully Deleted")
post_id = request.args.get('post_id')
return redirect(url_for("show_post", post_id=post_id))
# ----- SEARCH FOR A POST BY TITLE, SUBTITLE ----- #
@app.route("/search", methods=["GET", "POST"])
def search():
'''
Search for a Post by Title, Subtitle.
'''
query = request.form.get("query")
posts = list(mongo.db.blog_posts.find({"$text": {"$search": query}}))
return render_template("index.html", all_posts=posts)
# ----- HANDLE 404 ERROR ----- #
@app.errorhandler(404)
def page_not_found(e):
return render_template('404.html'), 404
# ----- HANDLE 403 ERROR ----- #
@app.errorhandler(403)
def page_not_found(e):
return render_template('403.html'), 403
# ----- HANDLE 500 ERROR ----- #
@app.errorhandler(500)
def page_not_found(e):
return render_template('500.html'), 500
if __name__ == "__main__":
app.run(host=os.environ.get("IP"),
port=int(os.environ.get("PORT")),
debug=False)