def __init__(self, key, type, user_value, global_value, description, can_override):
'''
Args:
key -- str.
type -- instance of ConfigurationValueType.
user_value -- serialized value defined per user. Can be None.
global_value -- serialized value defined not per user. Cannot be None.
Extra fields:
value -- *deserialized* value associated with key. Value of global_value or user_value,
respectively to can_override.
If user_value is None, then value == global_value.
'''
self.logger = get_logger('config.option')
assert isinstance(key, basestring)
assert isinstance(type, ConfigurationValueType)
assert isinstance(can_override, bool)
assert global_value
self.key = key
self.type = type
self.user_value = Config.Option.deserialize(user_value, self.type)
self.global_value = Config.Option.deserialize(global_value, self.type)
if can_override and (self.user_value is not None):
self.value = self.user_value
else:
self.value = self.global_value
self.can_override = can_override
self.description = description
def send_prolongation_request(request, rental_id, requester):
'''
Desc:
Sends prolongation request to librarians.
Args:
request -- http request - needed for messages
rental_id -- uint
requester -- instance of User,
'''
prol_logger = utils.get_logger('prolong')
prol_logger.info("prolong_request()....")
assert isinstance(rental_id, int)
assert isinstance(requester, User)
try:
r = Rental.objects.get(pk=rental_id, reservation__for_whom=requester.id)
max_period = max_prolongation_period(r)
prol_logger.info("prolong_request() preconditions valid, ;; rental %d ;; found ." % rental_id)
if max_period < 1:
prol_logger.error("prolong_request() cannot prolong -- someone else reserved/prolonged or too early.")
messages.error(request, "You CANNOT prolong this rental -- probably someone else reserved it or it is too early for prolongation.")
else:
prol_logger.info("prolong_request() request sent successfully.")
mail.request_prolongation(requester=requester, rental=r)
messages.info(request, "Request was sent to librarians, please WAIT FOR APPROVAL. Prolongation possible for %d days." % max_period)
except Rental.DoesNotExist:
messages.error(request, "Rental not found, unable to request for prolong.")
def __init__(self, key, type, user_value, global_value, description,
can_override):
'''
Args:
key -- str.
type -- instance of ConfigurationValueType.
user_value -- serialized value defined per user. Can be None.
global_value -- serialized value defined not per user. Cannot be None.
Extra fields:
value -- *deserialized* value associated with key. Value of global_value or user_value,
respectively to can_override.
If user_value is None, then value == global_value.
'''
self.logger = get_logger('config.option')
assert isinstance(key, basestring)
assert isinstance(type, ConfigurationValueType)
assert isinstance(can_override, bool)
assert global_value
self.key = key
self.type = type
self.user_value = Config.Option.deserialize(user_value, self.type)
self.global_value = Config.Option.deserialize(
global_value, self.type)
if can_override and (self.user_value is not None):
self.value = self.user_value
else:
self.value = self.global_value
self.can_override = can_override
self.description = description
def __init__(self):
self.logger = get_logger('config')
self.supported_types = ['int', 'bool', 'unicode', 'list_groupnames']
def show_user_rentals(request, user_id=False):
'''
Desc:
Shows user's current rentals. Allows returning books.
'''
if not user_id:
user = request.user
else:
try:
user = User.objects.get(id=user_id)
except User.DoesNotExist:
return render_not_found(request, item_name='User')
post = request.POST # a shorthand
context = { 'first_name' : user.first_name,
'last_name' : user.last_name,
'email' : user.email,
'reader' : user,
}
# Return button clicked for a rental:
# but we care about it only if he is supposed to
if request.user.has_perm('baseapp.change_rental') and\
request.method == 'POST' and\
'returned' in post:
try:
until_when = return_rental(librarian=request.user, rental_id=post['returned'])
context['message'] = 'Successfully returned'
messages.info(request, 'Successfully returned')
except Rental.DoesNotExist:
return render_not_found(request, item_name='Rental')
except PermissionDenied: # this might happen if user doesn't have 'change_rental' permission
return render_forbidden
# logger for prolongation
prol_logger = utils.get_logger('prolong')
# sending prolongation request to librarians
if request.method == 'POST' and 'prolong_request' in post:
rental_id = int(post['prolong_rental_id'])
prol_logger.info("request ;; user %d %s ;; rental_id %d", user.id, user.get_full_name(), rental_id)
send_prolongation_request(request, rental_id, user)
# prolonging rental
if request.method == 'POST' and 'prolong' in post and request.user.has_perm('baseapp.change_rental'):
rental_id = int(post['prolong_rental_id'])
requester = user
prolongator = request.user
prol_logger.info("prolonging ;; prolongator %d %s ;; requester %d %s ;; rental_id %d",
prolongator.id, prolongator.get_full_name(),
requester.id, requester.get_full_name(),
rental_id)
prolong_rental(request, rental_id, requester, prolongator)
# find user's rentals
user_rentals = Rental.objects.filter(reservation__for_whom=user.id).filter(end_date__isnull=True)
# and put them in a dict:
days_left_to_enable_prolongation = Config().get_int('min_days_left_to_enable_prolongation')
rent_list = []
for r in user_rentals:
max_period = max_prolongation_period(r)
days_left_to_rend = (r.reservation.end_date - utils.today()).days
enabled_prolongation = days_left_to_rend <= days_left_to_enable_prolongation
can_request_prolongation = enabled_prolongation and (request.user==r.reservation.for_whom) # owner of reservation
can_prolong = enabled_prolongation \
and max_period > 0 \
and request.user.has_perm('baseapp.change_rental') \
and (request.user in r.reservation.book_copy.location.get_all_maintainers())
# msg('enabled_prolongation: %d' % enabled_prolongation)
# msg('can_request_prolongation: %d' % can_request_prolongation)
# msg('can_prolong: %d' % can_prolong)
# msg('days_left_to_enable_prolongation: %d' % days_left_to_enable_prolongation)
# msg('max_period: %d' % max_period)
kopy = r.reservation.book_copy
book = kopy.book
rent_list.append({
'id' : r.id,
'shelf_mark' : kopy.shelf_mark,
'title' : book.title,
'kopy' : kopy,
'book' : book,
'authors' : list(sorted([a.name for a in book.author.all()])),
'from_date' : r.start_date.date(),
'to_date' : r.reservation.end_date,
'returnable' : request.user in kopy.location.get_all_maintainers(),
'rental' : r,
'can_request_prolongation' : can_request_prolongation,
'can_prolong' : can_prolong,
'prolongation_length' : max_period,
'cannot_request_nor_prolong' : not (can_request_prolongation or can_prolong),
})
# put rentals into context
context['rows'] = rent_list
# if user can change rentals then he can return books
template = 'user_rentals_return_allowed.html' if request.user.has_perm('baseapp.change_rental') else 'user_rentals.html'
return render_response(request, template, context)
def prolong_rental(request, rental_id, requester, prolongator):
'''
Desc:
Prolongs rental if possible.
Args:
request
rental_id
requester -- User. Owner of reservation and rental (one who is in possesion of book)
prolongator
'''
prol_logger = utils.get_logger('prolong')
prol_logger.info("prolong_rental()....")
assert isinstance(rental_id, int)
assert isinstance(requester, User)
assert isinstance(prolongator, User)
r = None
try:
r = Rental.objects.get(pk=rental_id, reservation__for_whom=requester)
except Rental.DoesNotExist:
messages.error(request, "Rental wasn't found, unable to prolong.")
return
prol_logger.info("prolong_rental() preconditions valid, rental present.")
days_left_to_enable_prolongation = Config().get_int('min_days_left_to_enable_prolongation')
days_left_to_rend = (r.reservation.end_date - utils.today()).days
enabled_prolongation = days_left_to_rend <= days_left_to_enable_prolongation
max_period = max_prolongation_period(r)
can_prolong = enabled_prolongation and max_period > 0 and prolongator.has_perm('baseapp.change_rental')
prol_logger.info("prolong_rental() "
+ ";; rental_id %d "
+ ";; days_left_to_enable_prolongation %d "
+ ";; days_left_to_rend %d "
+ ";; enabled_prolongation %d "
+ ";; max_period %d "
+ ";; can_prolong %d "
%
r.id,
days_left_to_enable_prolongation,
days_left_to_rend,
enabled_prolongation,
max_period,
can_prolong
)
if prolongator not in r.reservation.book_copy.location.get_all_maintainers():
prol_logger.error("prolong_rental() prolongator not a location maintainer.")
messages.error(request, "You cannot prolong this book - it's not from location you maintain.")
return
if not enabled_prolongation:
prol_logger.error("prolong_rental() prolongator not enabled.")
messages.error(request, "It is TOO EARLY to prolong this rental: please wait for %d days." % (days_left_to_rend - days_left_to_enable_prolongation))
return
if max_period <= 0:
prol_logger.error("prolong_rental() max_period less then zero.")
messages.error(request, "Rental cannot be prolonged - probably someone reserved this book.")
return
if can_prolong:
import datetime as dt
old_end_date = r.reservation.end_date
new_end_date = r.reservation.end_date + dt.timedelta(max_period)
r.reservation.end_date = new_end_date
r.reservation.save()
prol_logger.info("prolong_rental() prolonged ;; rental_id %d "
+ ";; old_end_date %s "
+ ";; new_end_date %s "
%
r.id,
str(old_end_date),
str(new_end_date)
)
mail.prolongated(r, prolongator, extra={'old_end_date': old_end_date,
'new_end_date': new_end_date,
})
messages.info(request, "Prolonged for %d days." % max_period)
else:
prol_logger.error("prolong_rental() you cannot prolong the rental.")
messages.error(request, "You cannot prolong the rental.")
def __init__(self):
self.logger = get_logger('config')
self.supported_types = ['int', 'bool', 'unicode', 'list_groupnames']