def comment_on_article():
# 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 = CommentForm()
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.
article_id = int(form.article_id.data)
# Use the service layer to store the new comment.
services.add_comment(article_id, form.comment.data, username,
uow.uow_instance)
# Retrieve the article in dict form.
article = services.get_article(article_id, uow.uow_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.articles_by_date',
date=article['date'],
view_comments_for=article_id))
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.
article_id = int(request.args.get('article'))
# Store the article id in the form.
form.article_id.data = article_id
else:
# Request is a HTTP POST where form validation has failed.
# Extract the article id of the article being commented from the form.
article_id = form.article_id.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.
article = services.get_article(article_id, uow.uow_instance)
return render_template('news/comment_on_article.html',
title='Edit article',
article=article,
form=form,
handler_url=url_for('news_bp.comment_on_article'),
selected_articles=utilities.get_selected_articles(),
tag_urls=utilities.get_tags_and_urls())
def test_can_get_article(in_memory_repo):
article_id = 2
article_as_dict = news_services.get_article(article_id, in_memory_repo)
assert article_as_dict['id'] == article_id
assert article_as_dict['date'] == date.fromisoformat('2020-02-29')
assert article_as_dict['title'] == 'Covid 19 coronavirus: US deaths double in two days, Trump says quarantine not necessary'
#assert article_as_dict['first_para'] == 'US President Trump tweeted on Saturday night (US time) that he has asked the Centres for Disease Control and Prevention to issue a ""strong Travel Advisory"" but that a quarantine on the New York region"" will not be necessary.'
assert article_as_dict['hyperlink'] == 'https://www.nzherald.co.nz/world/news/article.cfm?c_id=2&objectid=12320699'
assert article_as_dict['image_hyperlink'] == 'https://www.nzherald.co.nz/resizer/159Vi4ELuH2fpLrv1SCwYLulzoM=/620x349/smart/filters:quality(70)/arc-anglerfish-syd-prod-nzme.s3.amazonaws.com/public/XQOAY2IY6ZEIZNSW2E3UMG2M4U.jpg'
assert len(article_as_dict['comments']) == 0
tag_names = [dictionary['name'] for dictionary in article_as_dict['tags']]
assert 'World' in tag_names
assert 'Health' in tag_names
assert 'Politics' in tag_names
def test_cannot_get_article_with_non_existent_id(in_memory_uow):
article_id = 7
# Call the service layer to attempt to retrieve the Article.
with pytest.raises(news_services.NonExistentArticleException):
news_services.get_article(article_id, in_memory_uow)