simple-forum/app.py

from flask import Flask, redirect, render_template, request, flash # import flask
from login import * # import the login helper file
import helper, json, time # Import the helper file and other modules
app = Flask(__name__) # Create the app
db = helper.createDb(app) # Get the database
User, Topic, Reply, db = db['User'], db['Topic'], db['Reply'], db['db'] # Get the classes
createLoginManager(app, User) # Create and init the login manager (login helper file)
def getTime(): return time.asctime( time.localtime(time.time()) ) # Get the current time and date

@app.route('/login') # Render the login page, nothing more
def renderLogin(): 	logout_user(); return render_template('login.html')

@app.route('/login/post', methods=['POST'])
def login(): # Login backend
	try: loginUser(request.form['username'], request.form['password'], User); return redirect('/')
	except: 
		try: createUser(request.form['username'], request.form['password'], db, User); return redirect('/')
		except: return redirect('/login')

@app.route('/') # Render the homepage
def renderHome():
    return render_template('index.html', topics=Topic.query.order_by(Topic.lastActivity.desc())) # List all the topics in the reversed order

@app.route('/post') # Render the 'write new topic' box
@login_required 
def renderCreateTopic(): return render_template('post.html')

@app.route('/post/post', methods=['POST']) # Backend of the new topic box
def createTopic():
    topic = Topic(request.form['title'], request.form['content'], getTime(), getUsername(), request.form['category'])
    db.session.add(topic)
    db.session.commit()
    return redirect('/topic/' + str(topic.id))

@app.route('/topic/<id>') # Render a topic
def renderTopic(id):
    topic = Topic.query.filter_by(id=id).first_or_404(); topic.views += 1 # Add one view
    db.session.add(topic); db.session.commit() # Change the value of the view in the database
    return render_template('topic.html', topic=topic, replies=Reply.query.filter_by(inReplyTo=id)) # Render the page

@app.route('/reply/<id>', methods=['POST']) # Reply to a post.
@login_required
def replyTo(id):
    topic = Topic.query.filter_by(id=id).first_or_404(); topic.reply(getTime()) # Reply to the topic
    reply = Reply(request.form['body'], getTime(), current_user.username, id) # Add the reply
    db.session.add(reply); db.session.add(topic); db.session.commit() # Add everything in the database
    return redirect('/topic/' + str(id)) # Redirect to the correct page

@app.route('/like/<id>') # Like a topic
@login_required
def likeTopic(id):
    topic = Topic.query.filter_by(id=id).first_or_404()
    topic.like(current_user.username) # Call the 'like' function of the class 'Topic'
    db.session.add(topic); db.session.commit()
    return redirect('/topic/' + str(id))

@app.route('/like/reply/<id>/<idt>') # Like a reply
@login_required
def likeReply(id, idt):
    reply = Reply.query.filter_by(id=id).first_or_404()
    reply.like(current_user.username) # Call the like function of the class Reply
    db.session.add(reply); db.session.commit()
    return redirect('/topic/' + str(idt)) # Return to the topic

@app.route('/top') # Order the list of posts by thoses who have the biggest number of replies
def topList():
    topics = Topic.query.order_by(Topic.repliesNum.desc())
    return render_template('index.html', topics=topics)

@app.route('/new') # Order the list like normal (redirect)
def redirectIndex(): return redirect('/')

@app.route('/cat/<category>') # Get the list of posts in a category
def catList(category):
    topics = Topic.query.filter_by(category=category).order_by(Topic.id.desc())
    return render_template('index.html', topics=topics)

app.run(debug=True) # Run the app in mode debug (change to False otherwise)