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app.py
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app.py
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# import Flask and any libraries you want to use
from flask import Flask, request, jsonify, render_template, redirect, flash, session
# get db related stuff from models.py
from models import db, connect_db, User, Feedback
# get forms from forms.py
from forms import UserDetailsForm, LoginUserForm, FeedbackForm
from sqlalchemy.exc import IntegrityError
# instantiate and instance of Flask. app is standard name
app = Flask(__name__)
# specify which RDBMS you're using (i.e. postgresql) and name of DB you want app to use. "postgresql://ownername:yourpassword@localhost/databasename" OR "postgresql:///databasename"
# must do before you associate to your app or else it will error out
app.config["SQLALCHEMY_DATABASE_URI"] = "postgresql:///feedback_db"
# remove track modifications warning at startup
app.config["SQLALCHEMY_TRACKMODIFICATIONS"] = False
# print all SQL statements to terminal (helpful in debugging and learning the ORM method calls)
app.config["SQLALCHEMY_ECHO"] = True
# connect to db
connect_db(app)
# import debug toolbar
from flask_debugtoolbar import DebugToolbarExtension
# required by debugtoolbar for debugging session
app.config["SECRET_KEY"] = "secret"
# makes sure redirects aren't stopped by the debugtoolbar
app.config["DEBUG_TB_INTERCEPT_REDIRECTS"] = False
# instantiate class on our app
debug = DebugToolbarExtension(app)
@app.route("/")
def homepage():
"""homepage route. redirects to /register"""
return redirect("/register")
@app.route("/register", methods=["GET", "POST"])
def register():
"""register User for site"""
if "username" in session:
return redirect(f'/users/{session["username"]}')
form = UserDetailsForm()
if form.validate_on_submit():
data = {k: v for k, v in form.data.items() if k != "csrf_token"}
new_user = User.register(**data)
db.session.add(new_user)
try:
db.session.commit()
except IntegrityError:
form.username.errors.append("Username taken. Please pick another.")
return render_template("register.html", form=form)
session["username"] = new_user.username
flash("Welcome! Your account was successfully created!", "success")
return redirect(f"/users/{new_user.username}")
return render_template("register.html", form=form)
@app.route("/login", methods=["GET", "POST"])
def login():
"""login User to site"""
if "username" in session:
return redirect(f'/users/{session["username"]}')
form = LoginUserForm()
if form.validate_on_submit():
data = {k: v for k, v in form.data.items() if k != "csrf_token"}
user = User.authenticate(**data)
if user:
flash(f"Welcome back {user.username}!", "info")
session["username"] = user.username
return redirect(f"/users/{user.username}")
else:
form.username.errors = ["Invalid username or password"]
return render_template("login.html", form=form)
@app.route("/users/<username>")
def user_details(username):
if "username" not in session:
flash("Please log in first.", "primary")
return redirect("/login")
user = User.query.filter_by(username=username).first()
feedback = Feedback.query.filter_by(username=username)
form = FeedbackForm(obj=user)
return render_template("user_details.html", form=form, user=user, feedback=feedback)
@app.route("/users/<username>/delete", methods=["POST"])
def delete_user(username):
if "username" not in session:
flash("Please log in first.", "primary")
return redirect("/login")
if "username" in session:
user = User.query.filter_by(username=username).first()
db.session.delete(user)
db.session.commit()
flash(f'{session["username"]} deleted.', "success")
session.pop("username")
return redirect("/")
@app.route("/users/<username>/feedback/add", methods=["GET", "POST"])
def feedback_form(username):
"""Form for users to add feeback"""
if "username" not in session:
flash("Please log in first.", "primary")
return redirect("/login")
if "username" in session:
user = User.query.filter_by(username=username).first()
form = FeedbackForm()
if form.validate_on_submit():
title = form.title.data
content = form.content.data
feedback = Feedback(title=title, content=content, username=username)
db.session.add(feedback)
db.session.commit()
flash("Feedback submitted!", "success")
return redirect(f"/users/{user.username}")
return render_template("feedback.html", form=form)
@app.route("/feedback/<int:feedback_id>/update", methods=["GET", "POST"])
def feedback_details_form(feedback_id):
"""Form to post feeback"""
if "username" not in session:
flash("Please log in first.", "primary")
return redirect("/login")
feedback = Feedback.query.get_or_404(feedback_id)
form = FeedbackForm(obj=feedback)
if form.validate_on_submit():
feedback.title = form.title.data
feedback.content = form.content.data
db.session.add(feedback)
db.session.commit()
return redirect(f"/users/{feedback.user.username}")
else:
return render_template("feedback.html", form=form, feedback=feedback)
@app.route("/feedback/<int:feedback_id>/delete", methods=["POST"])
def delete_feedback(feedback_id):
"""Delete current user feeback"""
if "username" not in session:
flash("Please log in first.", "primary")
return redirect("/login")
feedback = Feedback.query.get_or_404(feedback_id)
if feedback.user.username == session["username"]:
db.session.delete(feedback)
db.session.commit()
flash("Feedback deleted.", "success")
return redirect(f"/users/{feedback.user.username}")
flash("You don't have permission to do that!", "error")
return redirect(f"/users/{feedback.user.username}")
@app.route("/logout")
def logout():
flash(f'Goodbye {session["username"]}', "info")
session.pop("username")
return redirect("/")