def duplicateGrid(self, gridObj, userObj=None, gridName=None, gridType=None):
#create new grid
if userObj:
if gridName != None:
newGrid = Grid(user=userObj, description=gridObj.description, name=gridName,
dendogram=gridObj.dendogram, grid_type=gridObj.grid_type, usid=generateRandomString(20),
dateTime=datetime.utcnow().replace(tzinfo=utc))
else:
newGrid = Grid(user=userObj, description=gridObj.description, name=gridObj.name,
dendogram=gridObj.dendogram, grid_type=gridObj.grid_type, usid=generateRandomString(20),
dateTime=datetime.utcnow().replace(tzinfo=utc))
else:
if gridName != None:
newGrid = Grid(description=gridObj.description, name=gridName, dendogram=gridObj.dendogram,
grid_type=gridObj.grid_type, usid=generateRandomString(20),
dateTime=datetime.utcnow().replace(tzinfo=utc))
else:
newGrid = Grid(description=gridObj.description, name=gridObj.name, dendogram=gridObj.dendogram,
grid_type=gridObj.grid_type, usid=generateRandomString(20),
dateTime=datetime.utcnow().replace(tzinfo=utc))
if gridType != None:
newGrid.grid_type = gridType
if newGrid:
try:
newGrid.save()
newConcerns = []
newAlternatives = []
oldConcerns = gridObj.concerns_set.all()
oldAlternatives = gridObj.alternatives_set.all()
lenOldConcerns = len(oldConcerns)
lenOldAlternatives = len(oldAlternatives)
for concern in oldConcerns:
temp = Concerns.objects.create(grid=newGrid, leftPole=concern.leftPole, rightPole=concern.rightPole,
weight=concern.weight)
newConcerns.append(temp)
for alternative in oldAlternatives:
temp = Alternatives.objects.create(grid=newGrid, name=alternative.name,
description=alternative.description)
newAlternatives.append(temp)
i = 0
j = 0
while i < lenOldConcerns:
while j < lenOldAlternatives:
oldRating = Ratings.objects.get(concern=oldConcerns[i], alternative=oldAlternatives[j])
Ratings.objects.create(concern=newConcerns[i], alternative=newAlternatives[j],
rating=oldRating.rating)
j += 1
j = 0
i += 1
return newGrid
except:
#delete what ever we had
if newGrid:
newGrid.delete()
return False
def create_session(self,
facilitating_user,
original_grid,
name=None,
show_results=None):
if name is None or name == '':
name = 'untitled'
if show_results is None:
show_results = False
facilitator, created = Facilitator.objects.get_or_create(
user=facilitating_user)
usid = generateRandomString(SESSION_USID_KEY_LENGTH)
state = State.objects.getInitialState()
invitation_key = str(uuid.uuid4())
session = self.create(usid=usid,
facilitator=facilitator,
name=name,
showResult=show_results,
state=state,
invitationKey=invitation_key)
duplicateGrid = Grid.objects.duplicateGrid(
original_grid, gridType=Grid.GridType.SESSION_GRID)
SessionGrid.objects.create(session=session,
grid=duplicateGrid,
iteration=0)
return session
class Grid(models.Model):
# from django.contrib.auth import get_user_model
# User = get_user_model()
usid = models.CharField(
max_length=20,
unique=True,
default=lambda: generateRandomString(GRID_USID_KEY_LENGTH))
from django.contrib.auth.models import User
user = models.ForeignKey(User, null=True)
name = models.CharField(max_length=30, default='untitled')
description = models.TextField(null=True)
dendogram = models.TextField(null=True)
dateTime = models.DateTimeField(auto_now_add=True, null=True)
grid_types = (('u', 'User grid'), ('s', 'Session grid'),
('ac', 'Response grid, Alternative/Concern'),
('rw', 'Response grid, Ratings/Weight'), ('cg',
'Composite Grid'))
grid_type = models.CharField(max_length=2, choices=grid_types, default='u')
objects = GridManager()
def get_absolute_url(self):
# return reverse('RGT.gridMng.views.show_grid', args=[self.usid])
return reverse('show_grid', args=[self.usid])
def get_alternative_total_rating_tuples(self):
""" Return a collection containing a tuple for each alternative containing that alternative and the total
weighted rating of that alternative. E.g. in a grid for programming languages, it returns a collection as
(['Python', 1], ['Java', 2], ['PHP', 5])
"""
alts_and_ratings = []
for alternative in self.alternatives_set.all():
total_rating = alternative.get_total_rating()
alts_and_ratings.append((alternative.name, total_rating))
return alts_and_ratings
def __unicode__(self):
return self.name
class Meta:
ordering = ['id']
app_label = 'gridMng'
class GridType(object):
USER_GRID = 'u'
SESSION_GRID = 's'
RESPONSE_GRID_ALTERNATIVE_CONCERN = 'ac'
RESPONSE_GRID_RATING_WEIGHT = 'rw'
COMPOSITE_GRID = 'cg'
def create_session(self, facilitating_user, original_grid, name=None, show_results=None):
if name is None or name == '':
name = 'untitled'
if show_results is None:
show_results = False
facilitator, created = Facilitator.objects.get_or_create(user=facilitating_user)
usid = generateRandomString(SESSION_USID_KEY_LENGTH)
state = State.objects.getInitialState()
invitation_key = str(uuid.uuid4())
session = self.create(usid=usid, facilitator=facilitator, name=name, showResult=show_results, state=state, invitationKey=invitation_key)
duplicateGrid = Grid.objects.duplicateGrid(original_grid, gridType=Grid.GridType.SESSION_GRID)
SessionGrid.objects.create(session=session, grid=duplicateGrid, iteration=0)
return session
def duplicateGrid(self,
gridObj,
userObj=None,
gridName=None,
gridType=None):
# create new grid
if userObj:
if gridName is not None:
newGrid = Grid(user=userObj,
description=gridObj.description,
name=gridName,
dendogram=gridObj.dendogram,
grid_type=gridObj.grid_type,
usid=generateRandomString(20),
dateTime=datetime.utcnow().replace(tzinfo=utc))
else:
newGrid = Grid(user=userObj,
description=gridObj.description,
name=gridObj.name,
dendogram=gridObj.dendogram,
grid_type=gridObj.grid_type,
usid=generateRandomString(20),
dateTime=datetime.utcnow().replace(tzinfo=utc))
else:
if gridName is not None:
newGrid = Grid(description=gridObj.description,
name=gridName,
dendogram=gridObj.dendogram,
grid_type=gridObj.grid_type,
usid=generateRandomString(20),
dateTime=datetime.utcnow().replace(tzinfo=utc))
else:
newGrid = Grid(description=gridObj.description,
name=gridObj.name,
dendogram=gridObj.dendogram,
grid_type=gridObj.grid_type,
usid=generateRandomString(20),
dateTime=datetime.utcnow().replace(tzinfo=utc))
if gridType is not None:
newGrid.grid_type = gridType
if newGrid:
try:
newGrid.save()
newConcerns = []
newAlternatives = []
oldConcerns = gridObj.concerns_set.all()
oldAlternatives = gridObj.alternatives_set.all()
lenOldConcerns = len(oldConcerns)
lenOldAlternatives = len(oldAlternatives)
for concern in oldConcerns:
temp = Concerns.objects.create(grid=newGrid,
leftPole=concern.leftPole,
rightPole=concern.rightPole,
weight=concern.weight)
newConcerns.append(temp)
for alternative in oldAlternatives:
temp = Alternatives.objects.create(
grid=newGrid,
name=alternative.name,
description=alternative.description)
newAlternatives.append(temp)
i = 0
j = 0
while i < lenOldConcerns:
while j < lenOldAlternatives:
oldRating = Ratings.objects.get(
concern=oldConcerns[i],
alternative=oldAlternatives[j])
Ratings.objects.create(concern=newConcerns[i],
alternative=newAlternatives[j],
rating=oldRating.rating)
j += 1
j = 0
i += 1
return newGrid
except:
# delete what ever we had
if newGrid:
newGrid.delete()
return False
