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app.py
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app.py
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from flask import Flask, render_template, redirect, session, g, flash, url_for
from sqlalchemy.exc import IntegrityError
from jinja2 import Environment, select_autoescape
import random
import os
import math
from models import connect_db, db, User, Drink, Ingredient, DrinkIngredient, Category, Favorite, DrinkPost
from forms import SignupForm, LoginForm, DrinkForm, SearchForm, IngredientsForm, EditDrinkIngredientForm
CURR_USER_KEY = "curr_user"
app = Flask(__name__)
app.app_context().push()
app.config['SQLALCHEMY_DATABASE_URI'] = os.environ.get('DATABASE_URL', 'postgresql://localhost:5432/cocktailsdb')
app.config['SECRET_KEY'] = os.environ.get('SECRET_KEY', "it's a secret")
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
app.config['SQLALCHEMY_ECHO'] = False
connect_db(app)
@app.context_processor
def inject_data():
categories = Category.query.order_by(Category.name).all()
search_form = SearchForm()
return dict(categories=categories, DrinkPost=DrinkPost, search_form=search_form)
def inject_funcs():
check_favorites = add_favorites_to_g()
return dict(check_favorites=check_favorites, check_author=check_author, len=len, math=math)
def check_author(post):
if g.user == post.user:
return True
else:
return False
app.jinja_env.globals.update(check_author=check_author)
@app.before_request
def add_user_to_g():
if CURR_USER_KEY in session:
g.user = User.query.get(session[CURR_USER_KEY])
else:
g.user = None
def add_favorites_to_g():
if 'curr_user' in session:
g.user = User.query.get(session['curr_user'])
g.favorites = [f.drink for f in g.user.favorites]
else:
g.user = None
g.favorites = None
@app.before_request
def before_request():
add_favorites_to_g()
def check_favorites(drink_id):
if g.favorites:
return drink_id in g.favorites
else:
return False
app.jinja_env.globals.update(check_favorites=check_favorites)
def sess_login(user):
session[CURR_USER_KEY] = user.id
def sess_logout():
if CURR_USER_KEY in session:
del session[CURR_USER_KEY]
def get_random_drink():
count = 0
drink_list = []
while count < 3:
drinks = Drink.query.all()
idx = random.randint(0, len(drinks) - 1)
drink_list.append(drinks[idx])
count += 1
return drink_list
def get_drinks_from_database():
from models import Drink
drinks = Drink.query.all()
return drinks
@app.route("/")
def show_home():
"""Show homepage - if logged in showcase random drink"""
drinks = get_drinks_from_database()
if g.user and g.favorites:
return render_template("home.html", drinks=drinks)
elif g.user and not g.favorites:
drinks = get_random_drink()
return render_template('home.html', drinks=drinks)
else:
return render_template('home.html')
@app.route("/signup", methods=["GET", "POST"])
def signup_user():
"""Signup a new user via class method, save hashed password to database"""
form = SignupForm()
if form.validate_on_submit():
try:
user = User.signup(
username=form.username.data,
password=form.password.data,
)
db.session.commit()
sess_login(user)
flash(f"Welcome {user.username}!", "success")
return redirect("/")
except IntegrityError:
db.session.rollback()
flash("Sorry, that username is already taken!", "danger")
return render_template("signup.html", form=form)
else:
return render_template("signup.html", form=form)
@app.route("/login", methods=["GET", "POST"])
def login_user():
"""Authenticate user via class method and login"""
form = LoginForm()
if form.validate_on_submit():
try:
user = User.authenticate(
username=form.username.data, password=form.password.data
)
sess_login(user)
flash(f"Welcome back, {user.username}!", "success")
return redirect("/")
except:
flash("Sorry, please try again!", "danger")
return render_template("login.html", form=form)
else:
return render_template("login.html", form=form)
@app.route("/logout")
def logout_user():
"""Log a user out"""
sess_logout()
flash(f"{g.user.username} has now been logged out.", "warning")
return redirect("/")
@app.route("/profile/<int:user_id>")
def show_user_profile(user_id):
"""Show user information"""
user = User.query.get_or_404(user_id)
favorites = []
drinkposts = []
for favs in user.favorites:
fav_drink = Drink.query.get_or_404(favs.drink_id)
favorites.append(fav_drink)
for posts in user.drinkposts:
drink = Drink.query.get_or_404(posts.drink_id)
drinkposts.append(drink)
return render_template(
"profile.html", user=user, favorites=favorites, posts=drinkposts
)
@app.route("/<int:drink_id>/favorite/add")
def add_favorite(drink_id):
"""Add user favorite to database"""
if g.user:
f = Favorite(user_id=g.user.id, drink_id=drink_id)
db.session.add(f)
db.session.commit()
flash("Drink successfully added!", "success")
return redirect(f"/{drink_id}")
else:
flash("You must be logged in to add favorites!", "warning")
return redirect("/login")
@app.route("/<int:drink_id>/favorite/delete", methods=['GET', 'POST'])
def delete_favorite(drink_id):
"""Delete user favorite from database"""
f = Favorite.query.filter_by(drink_id=drink_id, user_id=g.user.id).first()
if f:
db.session.delete(f)
db.session.commit()
flash('Delete successful', 'seccess')
return redirect(url_for('show_drink_details', drink_id=drink_id))
else:
flash('Favorite not found', 'danger')
return redirect(url_for('show_drink_details', drink_id=drink_id))
@app.route('/drink/<int:drink_id>')
def drink_details(drink_id):
drink = Drink.query.get_or_404(drink_id)
return render_template('drink-details.html', drink=drink, check_author=check_author)
@app.route("/<int:drink_id>")
def show_drink_details(drink_id):
"""Show details for a specific drink"""
drink = Drink.query.get_or_404(drink_id)
ingredients = drink.ingredients
likes = len(drink.favorites)
return render_template(
"drink-details.html",
drink=drink,
ingredients=ingredients,
User=User,
Ingredient=Ingredient,
DrinkPost=DrinkPost
)
@app.route("/drinks/category/<int:category_id>")
def show_category_drinks(category_id):
"""Show all drinks in a category"""
category = Category.query.get_or_404(category_id)
drinks = category.drinks
drink_count = len(drinks)
stop_at = 50
return render_template("drinks.html", drinks=drinks, title=f"{category.name}", drink_count=drink_count, stop_at=stop_at)
@app.route("/drinks/add", methods=["GET", "POST"])
def add_drink():
"""Add user drink to database"""
form = DrinkForm()
form.category_id.choices = [
(c.id, c.name) for c in Category.query.order_by(Category.name).all()
]
form.category_id.choices.insert(0, (None, "Select the category"))
try:
if form.validate_on_submit():
if g.user:
if form.category_id.data != 'None':
d = Drink(
name=form.name.data,
category_id=form.category_id.data,
image=form.image.data,
)
db.session.add(d)
db.session.commit()
dp = DrinkPost(user_id=g.user.id, drink_id=d.id)
db.session.add(dp)
db.session.commit()
flash(
f"{d.name} has been added, now for the ingredients!",
"success",
)
flash('If optional measurements are missing their conterpart, they will be ignored.', 'info')
return redirect(f"/{d.id}/ingredients/add")
else:
flash(
"A category must be selected before adding a drink!",
"warning",
)
return render_template("add-drink.html", form=form)
else:
flash('You must be logged in to add a drink!', 'warning')
return redirect('/login')
else:
return render_template("add-drink.html", form=form)
except IntegrityError:
flash('Sorry, that drink name is taken!', 'warning')
return redirect('/drinks/add')
@app.route("/<int:drink_id>/ingredients/add", methods=["GET", "POST"])
def add_ingredients(drink_id):
"""Add ingredients and measurements to go with new drink (max 15 ingredient-measurement pairs)"""
d = Drink.query.get_or_404(drink_id)
bad_ans = ['None', None, '']
form = IngredientsForm()
for field in form:
field.choices = [
(i.id, i.name) for i in Ingredient.query.order_by(Ingredient.name).all()
]
if field.choices:
field.choices.insert(0, (None, 'Select an ingredient'))
else:
field.choices = (None, "Select an ingredient")
if form.validate_on_submit():
count = 0
if g.user:
d_p = DrinkPost.query.filter(DrinkPost.drink_id == d.id, DrinkPost.user_id == g.user.id).first()
if d_p:
for field in form:
count += 1
if "ingredient" in field.id and field.data not in bad_ans:
d_i = DrinkIngredient(drink_id=d.id, ingredient_id=field.data)
elif "measurement" in field.id and field.data not in bad_ans:
if d_i:
d_i.measurement = field.data
db.session.add(d_i)
d_i = None
elif field.data in bad_ans and count >= 3:
print(f'idx = {count}, data = {field.data}')
if count == 3:
db.session.commit()
flash(f'{d.name} has been added, thanks for your contribution!', 'success')
return redirect(f"/{d.id}")
elif count % 2 == 0:
db.session.rollback()
flash('Each ingredient must have a measurement!', 'warning')
return redirect(f'/{d.id}/ingredients/add')
else:
db.session.commit()
flash(f'{d.name} has been added, thanks for your contribution!', 'success')
return redirect(f"/{d.id}")
else:
db.session.rollback()
flash('One ingredient and measurement required!', 'warning')
return redirect(f'/{d.id}/ingredients/add')
else:
db.session.rollback()
flash('You must be the author of the drink to edit ingredients!', 'danger')
return redirect('/')
else:
flash('You must be logged in to access this feature!', 'warning')
return redirect('/')
else:
return render_template("add-ingredients.html", form=form, drink=d)
@app.route("/delete/<int:drink_id>")
def delete_drink(drink_id):
"""If author is g.user delete drink and redirect to profile"""
if g.user:
drink = Drink.query.get_or_404(drink_id)
post = DrinkPost.query.filter(
DrinkPost.drink_id == drink_id, DrinkPost.user_id == g.user.id
).first()
if post:
db.session.delete(drink)
db.session.delete(post)
db.session.commit()
flash(f"{drink.name} has now been deleted!", "warning")
return redirect(f"/profile/{g.user.id}")
else:
flash("Sorry, only the author of this drink post can delete it!", "danger")
return redirect(f"/")
else:
flash('You must be logged in to access this feature!', 'warning')
return redirect('/')
@app.route("/<int:drink_id>/edit", methods=['GET', 'POST'])
def edit_drink(drink_id):
'''Edit drink form'''
drink = Drink.query.get_or_404(drink_id)
form = DrinkForm(obj=drink)
form.category_id.choices = [
(c.id, c.name) for c in Category.query.order_by(Category.name).all()
]
form.category_id.choices.insert(0, (None, 'Select category'))
if form.validate_on_submit():
if g.user:
if form.category_id.data != 'None':
if DrinkPost.query.filter(
DrinkPost.drink_id == drink_id, DrinkPost.user_id == g.user.id
).first():
drink.name = form.name.data or drink.name
drink.category_id = form.category_id.data or drink.category_id
drink.instructions = form.instructions.data or drink.instructions
drink.image = form.image.data or drink.image
db.session.add(drink)
db.session.commit()
flash('You have made changes', 'success')
return redirect(f'/{drink.id}')
else:
flash('Only the author can edit', 'danger')
else:
flash('A category must be selected', 'warning')
return render_template('edit-drink.html', form=form, drink=drink)
else:
flash('Login in to edit drinks', 'warning')
return redirect('/')
else:
return render_template('edit-drink.html', form=form, drink=drink)
@app.route('/<int:drink_id>/<int:ingredient_id>/edit', methods=['GET', 'POST'])
def edit_drink_ingredient(drink_id, ingredient_id):
"""If author is g.user edit drink ingredient and redirect to drink page"""
d_i = DrinkIngredient.query.filter(DrinkIngredient.drink_id == drink_id, DrinkIngredient.ingredient_id == ingredient_id).first()
drink = Drink.query.get_or_404(drink_id)
form = EditDrinkIngredientForm(obj=d_i)
form.ingredient_id.choices = [
(i.id, i.name) for i in Ingredient.query.order_by(Ingredient.name).all()
]
form.ingredient_id.choices[0] = (None, "Select an ingredient")
if form.validate_on_submit():
if g.user:
post = DrinkPost.query.filter(
DrinkPost.drink_id == drink_id, DrinkPost.user_id == g.user.id
).first()
if post:
if form.ingredient_id.data == 'None': form.ingredient_id.data = d_i.ingredient.id
d_i.ingredient_id = form.ingredient_id.data
d_i.measurement = form.measurement.data
db.session.commit()
flash(f'{drink.name} has been updated!', 'success')
return redirect(f'/{drink.id}')
else:
flash("Sorry, only the author of this drink can edit ingredients!", "danger")
return redirect(f"/")
else:
flash('You must be logged in to access this feature!', 'warning')
return redirect('/')
else:
return render_template('edit-ingredient.html', form=form, drink=drink)
@app.route('/<int:drink_id>/<int:ingredient_id>/delete')
def delete_drink_ingredient(drink_id, ingredient_id):
"""If author is g.user delete drink ingredient"""
if g.user:
d_i = DrinkIngredient.query.filter(DrinkIngredient.drink_id == drink_id, DrinkIngredient.ingredient_id == ingredient_id).first()
post = DrinkPost.query.filter(DrinkPost.drink_id == drink_id, DrinkPost.user_id == g.user.id).first()
if post:
db.session.delete(d_i)
db.session.commit()
flash('Ingredient has been deleted!', 'warning')
return redirect(f'/{drink_id}')
else:
flash("Sorry, only the author of this drink can delete ingredients!", "danger")
return redirect(f"/")
else:
flash('You must be logged in to access this feature!', 'warning')
return redirect('/')
@app.route("/search", methods=["POST"])
def show_search_results():
"""Query database for any matching drinks and display results"""
form = SearchForm()
if form.validate_on_submit():
if g.user:
q = form.search.data
results = get_search_results(q)
return render_template(
"drinks.html",
drinks=results,
title=f"{len(results)} Search Results for '{q}'",
)
else:
flash('You must be logged in to access this feature!', 'warning')
return redirect('/')
else:
flash("Something went wrong, please try again!", "warning")
return redirect("/")
def get_search_results(q):
"""Search DB for input string"""
results = []
ingredients = Ingredient.query.filter(
Ingredient.name.ilike(f"%{q}%")).all()
if ingredients:
for ingredient in ingredients:
for drink in ingredient.drinks:
if drink.drink != None:
results.append(drink.drink)
categories = Category.query.filter(Category.name.ilike(f"%{q}%")).all()
if categories:
for category in categories:
for drink in category.drinks:
if drink != None and drink not in results:
results.append(drink)
drinks = Drink.query.filter(Drink.name.ilike(f"%{q}%")).all()
if drinks:
for drink in drinks:
if drink != None and drink not in results:
results.append(drink)
return results