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app.py
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app.py
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"""
Tom O'Leary
Fyyur app.py - Runs app and handles data modeling
Python 3.7
"""
# ----------------------------------------------------------------------------#
# Imports
# ----------------------------------------------------------------------------#
import dateutil.parser
import babel
import logging
from sqlalchemy.exc import SQLAlchemyError
from models import Artist, Venue, Show, setup_db
from flask import Flask, render_template, request, flash, redirect, url_for
from flask_moment import Moment
from logging import Formatter, FileHandler
from forms import *
# ----------------------------------------------------------------------------#
# App Config.
# ----------------------------------------------------------------------------#
app = Flask(__name__)
moment = Moment(app)
db = setup_db(app)
# ----------------------------------------------------------------------------#
# Filters.
# ----------------------------------------------------------------------------#
def format_datetime(value, format='medium'):
date = dateutil.parser.parse(value)
if format == 'full':
format = "EEEE MMMM, d, y 'at' h:mma"
elif format == 'medium':
format = "EE MM, dd, y h:mma"
return babel.dates.format_datetime(date, format)
app.jinja_env.filters['datetime'] = format_datetime
# ----------------------------------------------------------------------------#
# Controllers.
# ----------------------------------------------------------------------------#
@app.route('/')
def index():
return render_template('pages/home.html')
# Venues
# ----------------------------------------------------------------
@app.route('/venues')
def venues():
# Displays venues at /venues
venue_list = Venue.query.group_by(Venue.city, Venue.state, Venue.id).all()
time = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
data = []
for venue in venue_list:
upcoming_shows = venue.shows.filter(Show.start_time > time).all()
data.append({
"city": venue.city,
"state": venue.state,
"venues": [{
"id": venue.id,
"name": venue.name,
"num_upcoming_shows": len(upcoming_shows)
}]
})
return render_template('pages/venues.html', areas=data)
@app.route('/venues/search', methods=['POST'])
def search_venues():
# Search on venues with partial string search. Case-insensitive.
venue_data = Venue.query.filter(Venue.name.ilike('%' + request.form['search_term'] + '%'))
venue_list = list(map(Venue.title, venue_data))
data = {
"count": len(venue_list),
"data": venue_list
}
return render_template('pages/search_venues.html', results=data,
search_term=request.form.get('search_term', ''))
@app.route('/venues/<int:venue_id>')
def show_venue(venue_id):
# Shows the venue page with the given venue_id
venue = Venue.query.filter_by(id=venue_id).first_or_404()
past_shows = db.session.query(Artist, Show).join(Show).join(Venue). \
filter(
Show.venue_id == venue_id,
Show.artist_id == Artist.id,
Show.start_time < datetime.now()
). \
all()
upcoming_shows = db.session.query(Artist, Show).join(Show).join(Venue). \
filter(
Show.venue_id == venue_id,
Show.artist_id == Artist.id,
Show.start_time > datetime.now()
). \
all()
data = Venue.detail(venue)
data.update({
'past_shows': [Show.artist_detail(show)
for artist, show in past_shows],
'upcoming_shows': [Show.artist_detail(show)
for artist, show in upcoming_shows],
'past_shows_count': len(past_shows),
'upcoming_shows_count': len(upcoming_shows)
})
return render_template('pages/show_venue.html', venue=data)
# Create Venue
# ----------------------------------------------------------------
@app.route('/venues/create', methods=['GET'])
def create_venue_form():
form = VenueForm()
return render_template('forms/new_venue.html', form=form)
@app.route('/venues/create', methods=['POST'])
def create_venue_submission():
# Insert form data as a new Venue record in the db
form = VenueForm()
venue = create_new(form)
add_item(venue)
return render_template('pages/home.html')
@app.route('/venues/<venue_id>', methods=['DELETE'])
def delete_venue(venue_id):
# Delete a record. Handle cases where the session commit could fail.
venue_data = Venue.query.get(venue_id)
Venue.delete(venue_data)
return None
@app.route('/delete_item/<int:item_id>', methods=['POST'])
def delete_item(item_id):
# Handles delete button
venue_data = Venue.query.get(item_id)
Venue.delete(venue_data)
return render_template('pages/home.html')
# Artists
# ----------------------------------------------------------------
@app.route('/artists')
def artists():
# Displays artists at /artists
artist_data = Artist.query.all()
artist_list = [{"id": art.id, "name": art.name} for art in artist_data]
return render_template('pages/artists.html', artists=artist_list)
@app.route('/artists/search', methods=['POST'])
def search_artists():
# Search on artists with partial string search. Case-insensitive
artist_data = Artist.query.filter(Artist.name.ilike('%' + request.form['search_term'] + '%'))
artist_list = list(map(Artist.title, artist_data))
data = {
"count": len(artist_list),
"data": artist_list
}
return render_template('pages/search_artists.html', results=data,
search_term=request.form.get('search_term', ''))
@app.route('/artists/<int:artist_id>')
def show_artist(artist_id):
# Shows the artist page with the given artist_id
artist = Artist.query.filter_by(id=artist_id).first_or_404()
past_shows = db.session.query(Venue, Show).join(Show).join(Artist). \
filter(
Show.artist_id == artist_id,
Show.venue_id == Venue.id,
Show.start_time < datetime.now()
). \
all()
upcoming_shows = db.session.query(Venue, Show).join(Show).join(Artist). \
filter(
Show.artist_id == artist_id,
Show.venue_id == Venue.id,
Show.start_time > datetime.now()
). \
all()
data = Artist.detail(artist)
data.update({
'past_shows': [Show.venue_detail(show)
for venue, show in past_shows],
'upcoming_shows': [Show.venue_detail(show)
for venue, show in upcoming_shows],
'past_shows_count': len(past_shows),
'upcoming_shows_count': len(upcoming_shows)
})
return render_template('pages/show_artist.html', artist=data)
# Update
# ----------------------------------------------------------------
@app.route('/artists/<int:artist_id>/edit', methods=['GET'])
def edit_artist(artist_id):
# Populate form with fields from artist with ID <artist_id>
form = ArtistForm()
artist_data = Artist.query.get(artist_id)
artist_items = Artist.detail(artist_data)
keys = ["name", "genres", "city", "state", "phone", "website", "facebook_link",
"seeking_venue", "seeking_description", "image_link"]
for key in keys:
getattr(form, key).data = artist_items[key]
return render_template('forms/edit_artist.html', form=form, artist=artist_items)
@app.route('/artists/<int:artist_id>/edit', methods=['POST'])
def edit_artist_submission(artist_id):
# Update existing artist record with ID <artist_id> using the new attributes
try:
form_items = request.form
artist_data = Artist.query.get(artist_id)
keys = ["name", "genres", "city", "state", "phone", "website", "facebook_link",
"seeking_description", "image_link"]
[setattr(artist_data, key, form_items[key]) for key in keys]
seeking_venue = request.form.get('seeking_venue')
if seeking_venue == 'y':
artist_data.seeking_venue = True
else:
artist_data.seeking_venue = False
db.session.commit()
except SQLAlchemyError as e:
print(e)
flash('Error! Form could not be updated')
return redirect(url_for('show_artist', artist_id=artist_id))
@app.route('/venues/<int:venue_id>/edit', methods=['GET'])
def edit_venue(venue_id):
# Populate form with fields from venue with ID <venue_id>
form = VenueForm()
venue_data = Venue.query.get(venue_id)
venue_items = Venue.detail(venue_data)
keys = ["name", "city", "state", "address", "phone", "image_link", "facebook_link",
"genres", "website", "seeking_talent", "seeking_description"]
for key in keys:
getattr(form, key).data = venue_items[key]
return render_template('forms/edit_venue.html', form=form, venue=venue_items)
@app.route('/venues/<int:venue_id>/edit', methods=['POST'])
def edit_venue_submission(venue_id):
# Update existing venue record with ID <venue_id> using the new attributes
try:
form_items = request.form
venue_data = Venue.query.get(venue_id)
keys = ["name", "city", "state", "address", "phone", "image_link", "facebook_link",
"genres", "website", "seeking_description"]
[setattr(venue_data, key, form_items[key]) for key in keys]
seeking_talent = request.form.get('seeking_talent')
if seeking_talent == 'y':
venue_data.seeking_talent = True
else:
venue_data.seeking_talent = False
db.session.commit()
except SQLAlchemyError as e:
print(e)
flash('Error! Form could not be updated')
return redirect(url_for('show_venue', venue_id=venue_id))
# Create Artist
# ----------------------------------------------------------------
@app.route('/artists/create', methods=['GET'])
def create_form():
form = ArtistForm()
return render_template('forms/new_artist.html', form=form)
@app.route('/artists/create', methods=['POST'])
def create_artist_submission():
# Called upon submitting the new artist listing form
form = ArtistForm()
artist = create_new(form)
add_item(artist)
return render_template('pages/home.html')
# Shows
# ----------------------------------------------------------------
@app.route('/shows')
def shows():
# Displays list of shows at /shows
shows_data = Show.query.all()
show_list = [Show.detail(show) for show in shows_data]
return render_template('pages/shows.html', shows=show_list)
@app.route('/shows/create')
def create_shows():
# Renders form
form = ShowForm()
return render_template('forms/new_show.html', form=form)
@app.route('/shows/create', methods=['POST'])
def create_show_submission():
# Called to create new shows in the db, upon submitting new show listing form
try:
show = Show(
venue_id=request.form['venue_id'],
artist_id=request.form['artist_id'],
start_time=request.form['start_time']
)
db.session.add(show)
db.session.commit()
# On successful db insert, flash success
flash('Show was successfully listed!')
except SQLAlchemyError as e:
print(e)
flash('An error occurred. Show could not be listed.')
return render_template('pages/home.html')
@app.errorhandler(404)
def not_found_error(error):
return render_template('errors/404.html'), 404
@app.errorhandler(500)
def server_error(error):
return render_template('errors/500.html'), 500
def create_new(form):
"""Populate new Artist/Venue form
Parameters
----------
form : ArtistForm or VenueForm Object
data found within an Artist or Venue Form
Returns
-------
artist : Artist
returns Artist data if form == ArtistForm
venue : Venue
returns Venue data if form == VenueForm
"""
keys = ["name", "city", "state", "phone", "genres", "image_link", "facebook_link", "website",
"seeking_description"]
results = [getattr(form, key).data for key in keys]
if isinstance(form, ArtistForm):
# Get appropriate form
seeking_venue = form.seeking_venue.data
artist = Artist(*results, seeking_venue)
return artist
else:
seeking_talent = form.seeking_talent.data
address = form.address.data
venue = Venue(*results, address, seeking_talent)
return venue
def add_item(obj):
"""Add item to database
Parameters
----------
obj : Artist or Venue Object
data from an Artist or Venue Object
Raises
-------
Exception :
raises error if item failed to add to the database
"""
try:
db.session.add(obj)
db.session.commit()
# on successful db insert, flash success
flash(request.form['name'] + ' was successfully listed!')
except Exception as e:
db.session.rollback()
db.session.flush()
flash('An error occurred. ' + obj.name + ' could not be listed.')
print(e)
if not app.debug:
file_handler = FileHandler('error.log')
file_handler.setFormatter(
Formatter('%(asctime)s %(levelname)s: %(message)s [in %(pathname)s:%(lineno)d]')
)
app.logger.setLevel(logging.INFO)
file_handler.setLevel(logging.INFO)
app.logger.addHandler(file_handler)
app.logger.info('errors')
# ----------------------------------------------------------------------------#
# Launch.
# ----------------------------------------------------------------------------#
# Default port:
if __name__ == '__main__':
app.run()
# Or specify port manually:
'''
if __name__ == '__main__':
port = int(os.environ.get('PORT', 5000))
app.run(host='0.0.0.0', port=port)
'''