def register():
form = RegistrationForm()
username_not_unique = None
if form.validate_on_submit():
# Successful POST, i.e. the username and password have passed validation checking.
# Use the service layer to attempt to add the new user.
try:
services.add_user(form.username.data, form.password.data,
repo.repo_instance)
# All is well, redirect the user to the login page.
return redirect(url_for('authentication_bp.login'))
except services.NameNotUniqueException:
username_not_unique = 'Your username is already taken - please supply another'
# For a GET or a failed POST request, return the Registration Web page.
return render_template('credentials.html',
isRegister=True,
title='Register',
form=form,
username_error_message=username_not_unique,
handler_url=url_for('authentication_bp.register'),
selected_movies=utilities.get_selected_movies(),
genre_urls=utilities.get_genres_and_urls())
def reviews_on_movie():
# Obtain the username of the currently logged in user.
username = session['username']
# Create form. The form maintains state, e.g. when this method is called with a HTTP GET request and populates
# the form with an movie rank, when subsequently called with a HTTP POST request, the movie rank remains in the
# form.
form = reviewForm()
if form.validate_on_submit():
# Successful POST, i.e. the reviews text has passed data validation.
# Extract the movie rank, representing the review movie, from the form.
movie_rank = int(form.movie_rank.data)
# Use the service layer to store the movie reviews.
services.add_reviews(movie_rank, form.review.data, username, repo.repo_instance)
# Retrieve the movie in dict form.
movie = services.get_movie(movie_rank, repo.repo_instance)
# Cause the web browser to display the page of all movies that have the same year as the reviewed movie,
# and display all reviews, including the movie reviews.
return redirect(url_for('movies_bp.movies_by_year', year=movie['year'], view_reviews_for=movie_rank))
if request.method == 'GET':
# Request is a HTTP GET to display the form.
# Extract the movie rank, representing the movie to review, from a query parameter of the GET request.
movie_rank = int(request.args.get('movie'))
# Store the movie rank in the form.
form.movie_rank.data = movie_rank
else:
# Request is a HTTP POST where form validation has failed.
# Extract the movie rank of the movie being reviewed from the form.
movie_rank = int(form.movie_rank.data)
# For a GET or an unsuccessful POST, retrieve the movie to review in dict form, and return a Web page that allows
# the user to enter a review. The generated Web page includes a form object.
movie = services.get_movie(movie_rank, repo.repo_instance)
return render_template(
'movies/reviews_on_movie.html',
title='Edit review',
movie=movie,
form=form,
handler_url=url_for('movies_bp.reviews_on_movie'),
selected_movies=utilities.get_selected_movies(),
genre_urls=utilities.get_genres_and_urls()
)
def login():
form = LoginForm()
username_not_recognised = None
password_does_not_match_username = None
if form.validate_on_submit():
# Successful POST, i.e. the username and password have passed validation checking.
# Use the service layer to lookup the user.
try:
user = services.get_user(form.username.data, repo.repo_instance)
# Authenticate user.
services.authenticate_user(user['username'], form.password.data,
repo.repo_instance)
# Initialise session and redirect the user to the home page.
session.clear()
session['username'] = user['username']
return redirect(url_for('home_bp.home'))
except services.UnknownUserException:
# Username not known to the system, set a suitable error message.
username_not_recognised = 'Username not recognised - please supply another'
except services.AuthenticationException:
# Authentication failed, set a suitable error message.
password_does_not_match_username = '******'
# For a GET or a failed POST, return the Login Web page.
return render_template(
'credentials.html',
title='Login',
username_error_message=username_not_recognised,
password_error_message=password_does_not_match_username,
form=form,
selected_movies=utilities.get_selected_movies(),
genre_urls=utilities.get_genres_and_urls())
def search():
form = SearchForm()
dosearch = None
result = None
first_movie_url = None
last_movie_url = None
next_movie_url = None
prev_movie_url = None
search_content = request.args.get('content')
if form.validate_on_submit():
content = form.content.data
return redirect(url_for('search_bp.search', content=content))
if request.method == 'GET':
dosearch = "yes"
try:
if search_content is not None:
search_content = int(request.args.get('content'))
result = repo.repo_instance.get_movies_by_year(search_content)
result = services.movies_to_dict(result)
except ValueError:
result = services.get_movies_by_actor(search_content, repo.repo_instance) # try search actor in repo
if result is None:
result = services.get_movies_by_director(search_content,
repo.repo_instance) # try search director in repo
if result is None:
result = services.get_movies_by_movie_title(search_content,
repo.repo_instance) # try search movie title in repo
if result is not None and len(result) > 3:
movies_per_page = 3
cursor = request.args.get('cursor')
if cursor is None:
# No cursor query parameter, so initialise cursor to start at the beginning.
cursor = 0
else:
# Convert cursor from string to int.
cursor = int(cursor)
if cursor > 0:
# There are preceding movies, so generate URLs for the 'previous' and 'first' navigation buttons.
prev_movie_url = url_for('search_bp.search', content=search_content, cursor=cursor - movies_per_page)
first_movie_url = url_for('search_bp.search', content=search_content,)
if cursor + movies_per_page < len(result):
# There are further movies, so generate URLs for the 'next' and 'last' navigation buttons.
next_movie_url = url_for('search_bp.search', content=search_content,cursor=cursor + movies_per_page)
last_cursor = movies_per_page * int(len(result) / movies_per_page)
if len(result) % movies_per_page == 0:
last_cursor -= movies_per_page
last_movie_url = url_for('search_bp.search', content=search_content, cursor=last_cursor)
result = result[cursor:cursor + movies_per_page]
for movie in result:
movie['view_review_url'] = url_for('search_bp.search', content=search_content,cursor=cursor,
view_reviews_for=movie['rank'])
movie['add_review_url'] = url_for('movies_bp.reviews_on_movie', movie=movie['rank'])
if result is not None and len(result) == 0:
result = None
return render_template(
'search.html',
form=form,
handler_url=url_for('search_bp.search'),
selected_movies=utilities.get_selected_movies(),
genre_urls=utilities.get_genres_and_urls(),
result=result,
dosearch=dosearch,
first_movie_url=first_movie_url,
last_movie_url=last_movie_url,
prev_movie_url=prev_movie_url,
next_movie_url=next_movie_url,
content = search_content
)
def home():
return render_template('/home.html',
selected_movies=utilities.get_selected_movies(),
genre_urls=utilities.get_genres_and_urls())
def movies_by_year():
# Read query parameters.
target_year = request.args.get('year')
movie_to_show_reviews = request.args.get('view_reviews_for')
# Fetch the first and last movies in the series.
first_movie = services.get_first_movie(repo.repo_instance)
last_movie = services.get_last_movie(repo.repo_instance)
if target_year is None:
# No year query parameter, so return movies from first year of the series.
movie = repo.repo_instance.get_first_movie()
target_year = movie.release_year
else:
# Convert target_year from string to year.
target_year = int(target_year)
if movie_to_show_reviews is None:
# No view-reviews query parameter, so set to a non-existent movie rank.
movie_to_show_reviews = -1
else:
# Convert movie_to_show_reviews from string to int.
movie_to_show_reviews = int(movie_to_show_reviews)
# Fetch movie(s) for the target year. This call also returns the previous and next years for movies immediately
# before and after the target year.
movies, previous_year, next_year = services.get_movies_by_year(target_year, repo.repo_instance)
first_movie_url = None
last_movie_url = None
next_movie_url = None
prev_movie_url = None
if len(movies) > 0:
# There's at least one movie for the target year.
if previous_year is not None:
# There are movies on a previous year, so generate URLs for the 'previous' and 'first' navigation buttons.
prev_movie_url = url_for('movies_bp.movies_by_year', year=previous_year)
first_movie_url = url_for('movies_bp.movies_by_year', year=first_movie['year'])
# There are movies on a subsequent year, so generate URLs for the 'next' and 'last' navigation buttons.
if next_year is not None:
next_movie_url = url_for('movies_bp.movies_by_year', year=next_year)
last_movie_url = url_for('movies_bp.movies_by_year', year=last_movie['year'])
# Construct urls for viewing movie reviews and adding reviews.
for movie in movies:
movie['view_review_url'] = url_for('movies_bp.movies_by_year', year=target_year,
view_reviews_for=movie['rank'])
movie['add_review_url'] = url_for('movies_bp.reviews_on_movie', movie=movie['rank'])
# Generate the webpage to display the movies.
return render_template(
'movies/movies.html',
title='movies',
movies_title=target_year,
movies=movies,
selected_movies=utilities.get_selected_movies(len(movies) * 2),
genre_urls=utilities.get_genres_and_urls(),
first_movie_url=first_movie_url,
last_movie_url=last_movie_url,
prev_movie_url=prev_movie_url,
next_movie_url=next_movie_url,
show_reviews_for_movie=movie_to_show_reviews
)
# No movies to show, so return the homepage.
return redirect(url_for('home_bp.home'))
def movies_by_genre():
movies_per_page = 3
# Read query parameters.
genre_name = request.args.get('genre')
cursor = request.args.get('cursor')
movie_to_show_reviews = request.args.get('view_reviews_for')
if movie_to_show_reviews is None:
# No view-reviews query parameter, so set to a non-existent movie rank.
movie_to_show_reviews = -1
else:
# Convert movie_to_show_reviews from string to int.
movie_to_show_reviews = int(movie_to_show_reviews)
if cursor is None:
# No cursor query parameter, so initialise cursor to start at the beginning.
cursor = 0
else:
# Convert cursor from string to int.
cursor = int(cursor)
# Retrieve movie ranks for movie's genre with genre_name.
movie_ranks = services.get_movie_ranks_for_genre(genre_name, repo.repo_instance)
# Retrieve the batch of movies to display on the Web page.
movies = services.get_movies_by_rank(movie_ranks[cursor:cursor + movies_per_page], repo.repo_instance)
first_movie_url = None
last_movie_url = None
next_movie_url = None
prev_movie_url = None
if cursor > 0:
# There are preceding movies, so generate URLs for the 'previous' and 'first' navigation buttons.
prev_movie_url = url_for('movies_bp.movies_by_genre', genre=genre_name, cursor=cursor - movies_per_page)
first_movie_url = url_for('movies_bp.movies_by_genre', genre=genre_name)
if cursor + movies_per_page < len(movie_ranks):
# There are further movies, so generate URLs for the 'next' and 'last' navigation buttons.
next_movie_url = url_for('movies_bp.movies_by_genre', genre=genre_name, cursor=cursor + movies_per_page)
last_cursor = movies_per_page * int(len(movie_ranks) / movies_per_page)
if len(movie_ranks) % movies_per_page == 0:
last_cursor -= movies_per_page
last_movie_url = url_for('movies_bp.movies_by_genre', genre=genre_name, cursor=last_cursor)
# Construct urls for viewing movie reviews and adding reviews.
for movie in movies:
movie['view_review_url'] = url_for('movies_bp.movies_by_genre', genre=genre_name, cursor=cursor,
view_reviews_for=movie['rank'])
movie['add_review_url'] = url_for('movies_bp.reviews_on_movie', movie=movie['rank'])
# Generate the webpage to display the movies.
return render_template(
'movies/movies.html',
title='movies',
movies_title=genre_name + " Movies",
movies=movies,
selected_movies=utilities.get_selected_movies(len(movies) * 2),
genre_urls=utilities.get_genres_and_urls(),
first_movie_url=first_movie_url,
last_movie_url=last_movie_url,
prev_movie_url=prev_movie_url,
next_movie_url=next_movie_url,
show_reviews_for_movie=movie_to_show_reviews
)