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models.py
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models.py
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import os
import jinja2
import webapp2
import random
import string
from google.appengine.ext import db
from utils import render_str, users_key, make_pw_hash, valid_pw
class BlogPost(db.Model):
subject = db.StringProperty(required = True)
author = db.StringProperty(required = True)
content = db.TextProperty(required = True)
created = db.DateTimeProperty(auto_now_add = True)
last_modified = db.DateProperty(auto_now = True)
@classmethod
def by_id(cls, pid):
return cls.get_by_id(pid)
def get_key(self):
return self.key().id()
def render_front(self):
self._id = self.key().id()
self._render_text = self.content.replace('\n', '<br>')
return render_str("post_front.html", post = self)
def render_post(self):
self._id = self.key().id()
self._render_text = self.content.replace('\n', '<br>')
return render_str("post.html", post = self)
class User(db.Model):
name = db.StringProperty(required = True)
pw_hash = db.StringProperty(required = True)
email = db.StringProperty
@classmethod
def by_id(cls, uid):
return cls.get_by_id(uid, parent = users_key())
@classmethod
def by_name(cls, name):
user = cls.all().filter('name =', name).get()
return user
@classmethod
def register(cls, name, pw, email = None):
pw_hash = make_pw_hash(name, pw)
return cls(parent = users_key(),
name = name,
pw_hash = pw_hash,
email = email)
@classmethod
def login(cls, name, pw):
user = cls.by_name(name)
if user and valid_pw(name, pw, user.pw_hash):
return user
class Likes(db.Model):
post_id = db.StringProperty(required = True)
liker_id = db.StringProperty(required = True)
@classmethod
def get_like(cls, post_id, liker_id):
like = cls.all().filter('post_id =', post_id).filter('liker_id =', liker_id).get()
return like
@classmethod
def save(cls, post_id, liker_id):
post = BlogPost.by_id(int(post_id))
if post:
if liker_id != post.author:
return cls(post_id = post_id,
liker_id = liker_id)
class Comment(db.Model):
post_id = db.StringProperty(required = True)
commenter_id = db.StringProperty(required = True)
commenter_name = db.StringProperty(required = True)
content = db.TextProperty(required = True)
created = db.DateTimeProperty(auto_now_add = True)
last_modified = db.DateProperty(auto_now = True)
@classmethod
def by_post(cls, post_id):
return Comment.all().filter('post_id =', post_id).order('-created')
@classmethod
def register(cls, post_id, commenter_id, content):
user = User.by_id(int(commenter_id))
return cls(commenter_name = user.name,
post_id = post_id,
commenter_id = commenter_id,
content = content)