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_articles=utilities.get_selected_movies(), )
def home(): return render_template( 'home/home.html', 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 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'))