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(
'authentication/credentials.html',
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(),
actor_urls=utilities.get_actors_and_urls(),
director_urls=utilities.get_directors_and_urls(),
)
def home():
return render_template(
'home/home.html',
genre_urls=utilities.get_genres_and_urls(),
actor_urls=utilities.get_actors_and_urls(),
director_urls=utilities.get_directors_and_urls(),
)
def comment_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 id, when subsequently called with a HTTP POST request, the movie id remains in the
# form.
form = CommentForm()
if form.validate_on_submit():
# Successful POST, i.e. the comment text has passed data validation.
# Extract the movie id, representing the commented movie, from the form.
movie_id = int(form.movie_id.data)
# Use the service layer to store the new comment.
services.add_comment(movie_id, form.comment.data, username,
repo.repo_instance)
# Retrieve the movie in dict form.
movie = services.get_movie(movie_id, repo.repo_instance)
# refresh this webpage
# to show all the comments of this movie, include the newly created one.
return redirect(url_for('movies_bp.comment_on_movie', movie=movie_id))
if request.method == 'GET':
# Request is a HTTP GET to display the form.
# Extract the movie id, representing the movie to comment, from a query parameter of the GET request.
movie_id = int(request.args.get('movie'))
# Store the movie id in the form.
form.movie_id.data = movie_id
else:
# Request is a HTTP POST where form validation has failed.
# Extract the movie id of the movie being commented from the form.
movie_id = int(form.movie_id.data)
# For a GET or an unsuccessful POST, retrieve the movie to comment in dict form, and return a Web page that allows
# the user to enter a comment. The generated Web page includes a form object.
movie = services.get_movie(movie_id, repo.repo_instance)
return render_template(
'movies/comment_on_movie.html',
title='Comment movie',
movie=movie,
form=form,
handler_url=url_for('movies_bp.comment_on_movie'),
# selected_articles=utilities.get_selected_articles(),
selected_articles=list(),
# tag_urls=utilities.get_tags_and_urls()
tag_urls=list(),
genre_urls=utilities.get_genres_and_urls(),
actor_urls=utilities.get_actors_and_urls(),
director_urls=utilities.get_directors_and_urls(),
)
def review_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 article id, when subsequently called with a HTTP POST request, the article id remains in the
# form.
form = ReviewForm()
if form.validate_on_submit():
# Successful POST, i.e. the comment text has passed data validation.
# Extract the article id, representing the commented article, from the form.
movie_rank = int(form.movie_rank.data)
# Use the service layer to store the new comment.
services.add_review(movie_rank, form.review.data, username,
repo.repo_instance, int(form.review2.data))
# Retrieve the article in dict form.
movie = services.get_movie(movie_rank, repo.repo_instance)
# Cause the web browser to display the page of all articles that have the same date as the commented article,
# and display all comments, including the new comment.
return redirect(
url_for('news_bp.movies_by_genre',
genre=movie['genre'].genre_name,
view_reviews_for=movie_rank))
if request.method == 'GET':
# Request is a HTTP GET to display the form.
# Extract the article id, representing the article to comment, from a query parameter of the GET request.
movie_rank = int(request.args.get('movie'))
# Store the article id in the form.
form.movie_rank.data = movie_rank
else:
# Request is a HTTP POST where form validation has failed.
# Extract the article id of the article being commented from the form.
movie_rank = int(form.movie_rank.data)
# For a GET or an unsuccessful POST, retrieve the article to comment in dict form, and return a Web page that allows
# the user to enter a comment. The generated Web page includes a form object.
movie = services.get_movie(movie_rank, repo.repo_instance)
return render_template(
'news/comment_on_article.html',
title='Edit article',
movie=movie,
form=form,
handler_url=url_for('news_bp.review_on_movie'),
selected_movies=utilities.get_selected_movies(),
genre_urls=utilities.get_genres_and_urls(),
actor_urls=utilities.get_actors_and_urls(),
director_urls=utilities.get_directors_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(
'authentication/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(),
actor_urls=utilities.get_actors_and_urls(),
director_urls=utilities.get_directors_and_urls(),
)
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 id.
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 ids for movie with genre_name.
movie_ids = services.get_movie_ids_by_genre(genre_name, repo.repo_instance)
# Retrieve the batch of movies to display on the Web page.
movies = services.get_movies_by_id(movie_ids[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_ids):
# 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_ids) / movies_per_page)
if len(movie_ids) % 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_comments_for=movie['id'])
movie['add_review_url'] = url_for('movies_bp.review_on_movie', movie=movie['id'])
# Generate the webpage to display the movies.
return render_template(
'movies/movies.html',
title='Movies',
movies_title='Movies by genre: ' + genre_name,
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
)
def movies_by_year():
# Read query parameters.
target_year = request.args.get('release_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 date query parameter, so return movies of first year of the series.
target_year = first_movie['release_year']
else:
target_year = target_year
if movie_to_show_reviews is None:
# No view-reviews query parameter, so set to a non-existent movie id.
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 year for movies immediately
# before and after the target year.
target_year = int(target_year)
movies = services.get_movies_by_release_year(target_year, repo.repo_instance)
previous_year = target_year - 1
next_year = target_year + 1
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', release_year=str(previous_year))
first_movie_url = url_for('movies_bp.movies_by_year', release_year=str(first_movie['release_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', release_year=str(next_year))
last_movie_url = url_for('movies_bp.movies_by_year', release_year=str(last_movie['release_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=str(target_year),
view_comments_for=movie['id'])
movie['add_review_url'] = url_for('movies_bp.review_on_movie', movie=str(movie['id']))
# Generate the webpage to display the reviews.
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')
actor_name = request.args.get('actor')
director_name = request.args.get('director')
# pagination cursor
cursor = request.args.get('cursor')
# comment
movie_to_show_comments = request.args.get('view_comments_for')
if movie_to_show_comments is None:
# No view-comments query parameter, so set to a non-existent movie id.
movie_to_show_comments = -1
else:
# Convert movie_to_show_comments from string to int.
movie_to_show_comments = int(movie_to_show_comments)
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)
# print(genre_name)
# print(actor_name)
# print(director_name)
if genre_name:
genre_name = genre_name.strip()
else:
genre_name = ''
if actor_name:
actor_name = actor_name.strip()
else:
actor_name = ''
if director_name:
director_name = director_name.strip()
else:
director_name = ''
movie_ids_all = services.get_movie_ids_all(repo.repo_instance)
movie_ids = movie_ids_all
# https://www.kite.com/python/answers/how-to-find-the-intersection-of-two-lists-in-python
# list1 = [1, 2, 3]
# list2 = [1, 3, 5]
# intersection_set = set.intersection(set(list1), set(list2))
# find intersection of list1 and list2
# intersection_list = list(intersection_set)
# print(intersection_list)
# OUTPUT
# [1, 3]
# Retrieve movie ids for movies that are genre with genre_name.
if genre_name:
genre_movie_ids = services.get_movie_ids_for_genre(
genre_name, repo.repo_instance)
movie_ids = list(set.intersection(set(movie_ids),
set(genre_movie_ids)))
# Retrieve movie ids for movies that are acted with actor_name.
if actor_name:
actor_movie_ids = services.get_movie_ids_for_actor(
actor_name, repo.repo_instance)
movie_ids = list(set.intersection(set(movie_ids),
set(actor_movie_ids)))
# Retrieve movie ids for movies that are directed with director_name.
if director_name:
director_movie_ids = services.get_movie_ids_for_director(
director_name, repo.repo_instance)
movie_ids = list(
set.intersection(set(movie_ids), set(director_movie_ids)))
movie_ids.sort()
# print(movie_ids)
# Retrieve the batch of movies to display on the Web page.
movies = services.get_movies_by_id(
movie_ids[cursor:cursor + movies_per_page], repo.repo_instance)
first_article_url = None
last_article_url = None
next_article_url = None
prev_article_url = None
if cursor > 0:
# There are preceding movies, so generate URLs for the 'previous' and 'first' navigation buttons.
prev_article_url = url_for('movies_bp.movies_by_genre',
genre=genre_name,
actor=actor_name,
director=director_name,
cursor=cursor - movies_per_page)
first_article_url = url_for('movies_bp.movies_by_genre',
genre=genre_name,
actor=actor_name,
director=director_name)
if cursor + movies_per_page < len(movie_ids):
# There are further movies, so generate URLs for the 'next' and 'last' navigation buttons.
next_article_url = url_for('movies_bp.movies_by_genre',
genre=genre_name,
actor=actor_name,
director=director_name,
cursor=cursor + movies_per_page)
last_cursor = movies_per_page * int(len(movie_ids) / movies_per_page)
if len(movie_ids) % movies_per_page == 0:
last_cursor -= movies_per_page
last_article_url = url_for('movies_bp.movies_by_genre',
genre=genre_name,
actor=actor_name,
director=director_name,
cursor=last_cursor)
# Construct urls for viewing movie comments and adding comments.
for movie in movies:
movie['view_comment_url'] = url_for('movies_bp.movies_by_genre',
genre=genre_name,
actor=actor_name,
director=director_name,
cursor=cursor,
view_comments_for=movie['id'])
movie['add_comment_url'] = url_for('movies_bp.comment_on_movie',
movie=movie['id'])
# Generate the webpage to display the articles.
return render_template('movies/movies.html',
movies=movies,
genre_name=genre_name,
actor_name=actor_name,
director_name=director_name,
genre_urls=utilities.get_genres_and_urls(),
actor_urls=utilities.get_actors_and_urls(),
director_urls=utilities.get_directors_and_urls(),
first_article_url=first_article_url,
last_article_url=last_article_url,
prev_article_url=prev_article_url,
next_article_url=next_article_url,
show_comments_for_movie=movie_to_show_comments)
