def register():
if request.method == 'POST':
username = request.form['username']
password = request.form['password']
db = get_db()
error = None
if not username:
error = 'Username is required'
elif not password:
error = 'Password is required'
#check to make sure there is not already a user in the database
#before we create a new user with this username
elif db.execute('SELECT id FROM user WHERE username = ?',
(username, )).fetchone() is not None:
error = 'User {} is already registered.'.format(username)
#if there isn't a user of this same name, add the username and password
#hash to our database
if error is None:
db.execute('INSERT INTO user (username, password) VALUES (?, ?)',
(username, generate_password_hash(password)))
#always call commit after data is modified
db.commit()
#url_for generates the URL for the login view based on the name
return redirect(url_for('auth.login'))
#flash stores messages that can be retrieved when rendering the template
flash(error)
#if the method is not a POST request (i.e. it is a GET request) render the register template
return render_template('auth/register.html')
def login():
if request.method == 'POST':
username = request.form['username']
password = request.form['password']
db = get_db()
error = None
user = db.execute('SELECT * FROM user WHERE username = ?',
(username, )).fetchone()
if user is None:
error = 'Incorrect username'
elif not check_password_hash(user['password'], password):
error = 'Incorrect password'
#session is a dictionary that stores data across requests
#when validation succeeds, the users ID is stored in the session
#the data is stored in a cookie that is sent to the browser, and the
#browser then sends it back with subsequent requets. Flask securely signs
#the data so that it can't be tampered with (i.e. fake a cookie)
if error is None:
session.clear()
session['user_id'] = user['id']
return redirect(url_for('index'))
flash(error)
return render_template('auth/login.html')
def load_logged_in_user():
user_id = session.get('user_id')
if user_id is None:
g.user = None
else:
g.user = get_db().execute('SELECT * FROM user WHERE id = ?',
(user_id, )).fetchone()
def index():
db = get_db()
posts = db.execute(
'SELECT p.id, title, body, created, author_id, username'
' FROM post p join user u on p.author_id = u.id'
' ORDER BY created DESC'
).fetchall()
return render_template('blog/index.html', posts=posts)
def get_post(id, check_author=True):
post = get_db().execute(
'SELECT p.id, title, body, created, author_id, username'
' FROM post p join user u on p.author_id = u.id'
' WHERE p.id = ?', (id,)
).fetchone()
if post is None:
abort(404, "Post id {0} doesn't exist.".format(id))
#404 not found, 403 forbidden, 401 unauthorized
if check_author and post['author_id'] != g.user['id']:
abort(403)
return post
def search_coch():
if request.method == "POST":
article = request.form["article"]
if len(article) > 0:
database = db.get_db()
sql = "SELECT coch, accuracy FROM wiki_coch " +\
"WHERE wiki='" + article + "'" +\
"ORDER BY accuracy DESC;"
result = database.execute(sql).fetchall()
if len(result) > 0:
review = [row[0] for row in result]
similarity = [row[1] for row in result]
similarity = ["Missing" if item == None else item \
for item in similarity]
return render_template("wiki_to_coch2.html",
article = article,
result = zip(review, similarity))
else:
sql = "SELECT DISTINCT wiki FROM wiki_coch " +\
"WHERE wiki LIKE '%" + article + "%';"
result = database.execute(sql).fetchall()
if len(result) > 0:
article_list = [row[0] for row in result]
return render_template("wiki_to_coch3.html",
article_list = article_list)
else:
instruction = ["No Similar Wikipedia article found.",
"Please input a new one."]
return render_template("wiki_to_coch.html",
instruction = instruction)
else:
instruction = ["No input found.",
"Please input a Wikipedia article."]
return render_template("wiki_to_coch.html",
instruction = instruction)
def search_wiki():
if request.method == "POST":
review = request.form["review"]
if len(review) > 0:
database = db.get_db()
sql = "SELECT wiki, accuracy FROM coch_wiki " +\
"WHERE coch ='" + review + "'" +\
"ORDER BY accuracy DESC;"
result = database.execute(sql).fetchall()
if len(result) > 0: # At least one row is returned
article = [row[0] for row in result]
similarity = [row[1] for row in result]
similarity = ["missing" if item == None else item \
for item in similarity]
return render_template("coch_to_wiki2.html",
review = review,
result = zip(article, similarity))
else:
sql = "SELECT DISTINCT coch FROM coch_wiki " +\
"WHERE coch LIKE '%" + review + "%';"
result = database.execute(sql).fetchall()
if len(result) > 0:
review_list = [row[0] for row in result]
return render_template("coch_to_wiki3.html",
review_list = review_list)
else:
instruction = ["No Similar Cochrane Reviews found.",
"Please input a new one."]
return render_template("coch_to_wiki.html",
instruction = instruction)
else:
instruction = ["No input found.",
"Please input a Cochrane review."]
return render_template("coch_to_wiki.html",
instruction = instruction)
def create():
if request.method == 'POST':
title = request.form['title']
body = request.form['body']
error = None
if not title:
error = 'Title is required'
if error is not None:
flash(error)
else:
db = get_db()
db.execute(
'INSERT INTO post (title, body, author_id)'
' VALUES (?, ?, ?)',
(title, body, g.user['id'])
)
db.commit()
return redirect(url_for('blog.index'))
return render_template('blog/create.html')
def update(id):
post = get_post(id)
if request.method == 'POST':
title = request.form['title']
body = request.form['body']
error = None
if not title:
error = 'Title is required'
if error is not None:
flash(error)
else:
db = get_db()
db.execute(
'UPDATE post SET title = ?, body = ?'
' WHERE id = ?', (title, body, id)
)
db.commit()
return redirect(url_for('blog.index'))
return render_template('blog/update.html', post=post)
def delete(id):
get_post(id)
db = get_db()
db.execute('DELETE FROM post WHERE id = ?', (id,))
db.commit()
return redirect(url_for('blog.index'))
