def get_dudle(id):
"""
Get dudle for id
"""
key = Key.from_path('Dudle', id)
dudle = Dudle.get(key)
return dudle
def get_toprated_dudles(limit=5, offset=0):
"""
Get the highest rated dudles
"""
query = Dudle.all().filter('complete = ', True
).filter('public = ', True).order('-rating')
count = query.count(1000)
dudles = query.fetch(limit=limit, offset=offset)
return dudles, count
def get_latest_dudles(limit=5, order='asc', offset=0):
"""
Get last C{limit} dudles
"""
o = { 'asc':'', 'desc':'-' }[order]
query = Dudle.all().filter('complete = ', True
).filter('public = ', True).order('%screated_date' % o)
count = query.count(1000)
dudles = query.fetch(limit=limit, offset=offset)
return dudles, count
def update_dudle_strokes(id, data):
"""Update stroke data
"""
key = Key.from_path('Dudle', id)
dudle = Dudle.get(key);
if not hasattr(dudle, 'partial_stroke_data'):
dudle.partial_stroke_data = db.Blob('')
dudle.partial_stroke_data = db.Blob(dudle.partial_stroke_data
+ data)
dudle.put()
def update_dudle(id, format, data):
"""
Update DudlePartial with data received from client
"""
key = Key.from_path('Dudle', id)
dudle = Dudle.get(key);
if not hasattr(dudle, 'partial_data'):
dudle.partial_data = db.Blob('')
dudle.partial_data = db.Blob(dudle.partial_data
+ ''.join([ chr(int(n)) for n in data.split(',') ]))
dudle.put()
def finalize_dudle(id, format, width, height):
"""
Finalize the Dudle object based on associated DudlePartial
object and remove the DudlePartial object from the datastore.
"""
key = Key.from_path('Dudle', id)
dudle = Dudle.get(key)
dudle.image_data = _pngData(dudle.partial_data, width, height)
del dudle.partial_data
dudle.complete = True
dudle.put()
def finalize_dudle_strokes(id, public=True, anonymous=False):
key = Key.from_path('Dudle', id)
dudle = Dudle.get(key)
dudle.anonymous = anonymous
dudle.public = public
dudle.strokes = dudle.partial_stroke_data
if hasattr(dudle, 'partial_data'):
del dudle.partial_data
del dudle.partial_stroke_data
if len(dudle.strokes) > 7:
dudle.complete = True
dudle.put()
def get_gallery(artist, current_user=None, offset=0, limit=5):
"""
Get dudles by artist.
@param artist: the C{Dudlr} artist
@param current_user: the current ${User}
@param offset: offset into results
@param limit: limit of dules to return (default: 5)
"""
#o = { 'asc':'', 'desc':'-' }[order]
current_user = current_user or users.get_current_user
query = Dudle.all().filter('artist = ', artist).filter('complete = ', True)
if current_user != artist.user:
query = query.filter('public = ', True).filter('anonymous = ', False)
count = query.count(1000)
dudles = query.order('-created_date').fetch(limit=limit, offset=offset)
return dudles, count
def create_dudle(dudlr=None, request=None):
"""
Create a new unfinalized Dudle and an associated DudlePartial
object.
"""
dudlr = dudlr or get_dudlr()
dudle = Dudle(name="A doodle")
dudle.artist = dudlr
# todo save
#if not dudlr and request:
# dudle.ip_address = request.
dudle.partial_data = db.Blob('')
dudle.partial_stroke_data = db.Blob('')
dudle.put()
return dudle
def rate_dudle(id, rating, user):
"""
Rate a dudle - may only be done once per dudle per authenticated user.
@param id: id of dudle to rate
@param rating: the rating (0-100)
@param user: the user rating the dudle
"""
if not user:
raise DudleException(ERROR_NOT_LOGGED_IN)
dudle_rating = DudleRating.all().filter('user = '******'dudle_id = ', id).get()
rated = True
if not dudle_rating:
rated = False
dudle_rating = DudleRating(user=user, rating=rating, dudle_id=id)
key = Key.from_path('Dudle', id)
dudle = Dudle.get(key)
if dudle.artist and dudle.artist.user.email() == user.email():
raise DudleException(ERROR_CONFLICT_OF_INTEREST)
if not rated:
adj = rating / float(dudle.rated_count + 1)
r = dudle.rating * (dudle.rated_count/float(dudle.rated_count + 1))
dudle.rated_count += 1
r = r + adj
else:
adj = rating / float(dudle.rated_count)
r = dudle.rating - (dudle_rating.rating / float(dudle.rated_count))
dudle_rating.rating = rating
r = r + adj
if r > 100:
r = 100
dudle.rating = int(round(r))
logging.info('Updated rating : ' + str(dudle.rating));
dudle.put()
dudle_rating.put()
return dudle
