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homepage_handler.py
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homepage_handler.py
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import time
import logging
from handler import Handler
from google.appengine.api import mail
from utils import *
from article_database import Article
from user_database import User
class HomePageHandler(Handler):
def get(self):
article_list = Article.recent(100)
for article in article_list:
t = article.created.isoformat()
article.time = t
author = User.by_id(article.author)
if author:
article.author_name = author.name
else:
article.author_name = 'Unknown'
if self.user:
self.render('homepage.html',
user = self.user,
article_list = article_list)
else:
self.render('homepage.html', article_list = article_list)
class NewArticleHandler(Handler):
def get(self):
if self.user:
state = self.make_state()
self.render('new_article.html', user = self.user, state = state)
else:
# Prompt user to login.
self.render('message.html', message_new_article_1 = True)
def post(self):
if self.user:
if not self.check_state():
logging.warning("Possible CSRF attack detected!")
self.redirect("/")
return
input_title = self.request.get('title')
input_body = self.request.get('body')
error_title=""
error_body=""
have_error = False
if not valid_title(input_title):
# Show the error-message: not a valid title.
error_title = True
have_error = True
if not valid_body(input_body):
# Show the error-message: not a valid body.
error_body = True
have_error = True
if have_error:
state = self.make_state()
# Render page with error-messages.
self.render('new_article.html',
user = self.user,
error_title = error_title,
error_body = error_body,
title_form = input_title,
body_form = input_body,
state = state)
else:
# Create new entry in the Article-DB.
article = Article.create(input_title,
input_body,
self.user.key().id())
article.put()
# Update memcache
Article.update_article_cache(article)
# Redirect to homepage
self.redirect("/")
else:
# Prompt user to login.
self.render('message.html', message_new_article_1 = True)
class EditArticleHandler(Handler):
def get(self):
if self.user:
input_article_id = self.request.get("article")
article = Article.get_by_id(int(input_article_id))
if self.user.key().id() == article.author:
state = self.make_state()
self.render('edit_article.html',
user = self.user,
article = article,
title_form = article.title,
body_form = article.body,
state = state)
else:
# Show message that user is not authorized to edit.
self.render('message.html', message_edit_article_2 = True)
else:
# Prompt user to login.
self.render('message.html', message_edit_article_1 = True)
def post(self):
if self.user:
if not self.check_state():
logging.warning("Possible CSRF attack detected!")
self.redirect("/")
return
input_delete_article = self.request.get('delete_article')
if input_delete_article:
Article.remove(input_delete_article)
# Show message: Confirm deletion of article.
self.render('message.html', message_delete_article = True)
else:
input_edit_article = self.request.get('edit_article')
input_title = self.request.get('title')
input_body = self.request.get('body')
article = Article.by_id(input_edit_article)
error_title=""
error_body=""
have_error = False
if not valid_title(input_title):
# Show the error-message: not a valid title.
error_title = True
have_error = True
if not valid_body(input_body):
# Show the error-message: not a valid body.
error_body = True
have_error = True
if have_error:
state = self.make_state()
# Render page with error-messages.
self.render('edit_article.html',
user = self.user,
article = article,
error_title = error_title,
error_body = error_body,
title_form = input_title,
body_form = input_body,
state = state)
else:
# Edit article-entity and commit to Article-DB.
article.title = input_title
article.body = input_body
article.put()
# Update memcache
Article.update_article_cache(article)
# Redirect to homepage
self.redirect("/")
else:
# Prompt user to login.
self.render('message.html', message_new_article_1 = True)
class ContactHandler(Handler):
def get(self):
if self.user:
state = self.make_state()
self.render('contact.html',
user = self.user,
email_form = self.user.email,
state = state)
else:
state = self.make_state()
self.render('contact.html',
state = state)
def post(self):
if not self.check_state():
logging.warning("Possible CSRF attack detected!")
self.redirect("/")
return
input_email = self.request.get('email')
input_subject = self.request.get('subject')
input_content = self.request.get('content')
error_email=""
error_subject=""
error_content=""
have_error = False
if not valid_email(input_email):
# Show the error-message: not a valid email.
error_email = True
have_error = True
if not valid_subject(input_subject):
# Show the error-message: not a valid subject.
error_subject = True
have_error = True
if not valid_content(input_content):
# Show the error-message: not a valid content.
error_content = True
have_error = True
if have_error:
if self.user:
state = self.make_state()
# Render page with error-messages.
self.render('contact.html',
error_email = error_email,
error_subject = error_subject,
error_content = error_content,
email_form = input_email,
subject_form = input_subject,
content_form = input_content,
user = self.user,
state = state)
else:
state = self.make_state()
# Render page with error-messages.
self.render('contact.html',
error_email = error_email,
error_subject = error_subject,
error_content = error_content,
email_form = input_email,
subject_form = input_subject,
content_form = input_content,
state = state)
else:
if self.user:
state = self.make_state()
# Render page with success-message.
self.render('contact.html',
success_message = True,
user = self.user,
email_form = self.user.email,
state = state)
else:
state = self.make_state()
# Render page with success-message.
self.render('contact.html',
success_message = True,
state = state)
# Send email to administrator
# Set the following sender to a valid GAE admin address
sender = "blog@gmail.com"
subject = input_subject
body = "Message from: "+input_email+" --- Content: "+input_content
mail.send_mail_to_admins(sender, subject, body)
class AboutHandler(Handler):
def get(self):
if self.user:
self.render('about.html', user = self.user)
else:
self.render('about.html')
class TermsHandler(Handler):
def get(self):
if self.user:
self.render('terms.html', user = self.user)
else:
self.render('terms.html')
class PrivacyHandler(Handler):
def get(self):
if self.user:
self.render('privacy.html', user = self.user)
else:
self.render('privacy.html')
class SendEmailHandler(Handler):
def get(self):
if self.user:
state = self.make_state()
self.render('send_email.html',
user = self.user,
email_from_form = self.user.email,
state = state)
else:
self.render('send_email.html', error_no_user = True)
def post(self):
if self.user:
if not self.check_state():
logging.warning("Possible CSRF attack detected!")
self.redirect("/")
return
input_email_to = self.request.get('email_to')
input_email_from = self.request.get('email_from')
input_content = self.request.get('content')
error_email_to=""
error_email_from=""
error_content=""
have_error = False
if not valid_email(input_email_to):
# Show the error-message: not a valid email.
error_email_to = True
have_error = True
if not valid_email(input_email_from):
# Show the error-message: not a valid email.
error_email_to = True
have_error = True
if not valid_content(input_content):
# Show the error-message: not a valid content.
error_content = True
have_error = True
if have_error:
state = self.make_state()
# Render page with error-messages.
self.render('send_email.html',
error_email_to = error_email_to,
error_email_from = error_email_from,
error_content = error_content,
email_to_form = input_email_to,
email_from_form = input_email_from,
content_form = input_content,
user = self.user,
state = state)
else:
state = self.make_state()
# Render page with success-message.
self.render('send_email.html',
success_message = True,
sent_email = input_email_to,
email_from_form = self.user.email,
user = self.user,
state = state)
# Send email.
self.send_email(input_email_to,
'email_subject.html',
'email_recommend_joe.html',
subject_type = 'recommend_joe',
content = input_content,
sender = input_email_from)
else:
# Prompt user to login.
self.render('message.html', message_send_email_1 = True)