def share(request, id):
"""Share the presentation to other users"""
presentation = Presentation.objects.get(pk = id)
share_formset = formset_factory(SharePresentationForm)
if request.method == "POST":
formset = share_formset(request.POST)
if formset.is_valid():
for form in formset:
user = User.objects.filter(email = form.cleaned_data["email"]).first()
if user is not None:
userpresentation = UserPresentation(
presentation_id = presentation.id,
user_id = user.id,
can_edit = True if int(form.cleaned_data["permission"]) == 1 else False,
is_owner = 0)
userpresentation.save()
# redirect to the same page
return HttpResponseRedirect(request.META["HTTP_REFERER"])
else:
return render_to_response("share_form.html", {
"presentation": presentation,
"collaborators": presentation.userpresentation_set.exclude(user__id = request.user.id),
"share_formset": share_formset
}, context_instance=RequestContext(request))
def share(request): """Share the presentation to other users""" if request.method == "POST": presentation_id = request.POST["presentation_id"] formset = formset_factory(SharePresentationForm) formset = formset(request.POST) if formset.is_valid(): # get the data from the form for form in formset: email = form.cleaned_data["email"] permission = int(form.cleaned_data["permission"]) # get user info based on the email user = User.objects.filter(email=email).first() if user is not None: # create a UserPresentation object that associates a user to a presentation uspr = UserPresentation(user_id=user.id, presentation_id=presentation_id, is_owner=0, can_edit=permission ) # save the association to the database uspr.save() # redirect to the same page return HttpResponseRedirect(request.META["HTTP_REFERER"])
def create(request):
"""Create a new presentation"""
# if data are received from the view
if request.method == "POST":
# get data from the form
form = NewPresentationForm(request.POST)
if form.is_valid():
name = form.cleaned_data["name"]
description = form.cleaned_data["description"]
# set default theme (id=1)
theme_id = 1
# set the number of views and likes to 0
num_views = num_likes = 0
# set status=1 (active)
status = 1
# set the presentation key based on a random SHA1 string
key = hashlib.sha1(str(datetime.datetime.now())).hexdigest()[:10]
# set public=1 (public is default)
is_private = form.cleaned_data["is_private"]
# create a Presentation object with its parameters
presentation = Presentation(theme_id=theme_id,
name=name,
description=description,
status=status,
key=key,
is_private=is_private,
num_views=num_views,
num_likes=num_likes
)
# save the presentation to the database
presentation.save()
# create a UserPresentation object to associate the user with the created presentation ID
userpresentation = UserPresentation(user_id=request.user.id,
presentation_id=presentation.id,
is_owner=1,
can_edit=1,
)
# save the association to the database
userpresentation.save()
# redirect to the edit page of the created presentation
return HttpResponseRedirect("/edit/" + str(presentation.key))
form = NewPresentationForm()
# redirect to home page
return render_to_response("home.html", {"form":form}, context_instance=RequestContext(request))
def presentation(request, key):
"""Show the presentation page with info, mini preview, comments and other options """
# search the presentation based on its key
p = Presentation.objects.filter(key=key).first()
# if presentation exists
if p is not None:
if p.is_private:
uspr = UserPresentation()
if not uspr.is_allowed(request.user.id, p.id):
raise Http404
rename_form = RenameForm({"name":p.name})
modify_description_form = ModifyDescriptionForm({"description":p.description})
# Load comments from presentation's ID
from main.models import Comment
c = Comment()
comments = c.get_from_presentation(p.id)
# generate comment form
comment_form = CommentForm()
# generate share form
uspr = UserPresentation()
share_formset = uspr.load_share_form(p.id, request.user.id)
# set permissions
is_owner = False
can_edit = False
# check if the user is logged
if request.user.username:
# check if the user is the owner of the presentation
if UserPresentation.objects.filter(user_id=request.user.id, presentation_id=p.id, is_owner=True).exists():
is_owner = True
# check if the user can edit the presentation
if UserPresentation.objects.filter(user_id=request.user.id, presentation_id=p.id, can_edit=True).exists():
can_edit = True
# show the presentation page
return render_to_response("presentation.html", {
"presentation": p,
"rename_form": rename_form,
"modify_description_form": modify_description_form,
"share_formset": share_formset,
"comment_form": comment_form,
"comments": comments,
"view_url": request.get_host() + reverse("main.views.presentations.view", args=[key]),
"is_owner": is_owner,
"can_edit": can_edit,
}, context_instance=RequestContext(request))
else:
# show error 404 page
raise Http404
def copy(request, id):
"""Copy a backup of the presentation"""
# search the presentation data based on its ID
p = Presentation.objects.get(pk=id)
thumbnail_src = settings.MEDIA_THUMBNAILS_ROOT + "/img_" + p.key + ".png"
'''delete its PK, so next time the save() method is executed,
it'll save a new row to the database with a new ID'''
p.pk = None
# generate a presentation key, based on a random SHA1 string
p.key = hashlib.sha1(str(datetime.datetime.now())).hexdigest()[:10]
# generate a new name to the presentation
p.name = _("text_copy_of") + " " + p.name
# set the number of views and likes to 0
p.num_views = p.num_likes = 0
# save the new copied presentation to the database
p.save()
# Copy slides from MongoDB database
conn = pymongo.Connection(settings.MONGODB_URI)
db = conn[settings.MONGODB_DATABASE]
slides = db.slides.find({"presentation_id": int(id)})
for i in slides:
#Replace the slide _id and its presentation_id
i["_id"] = ObjectId()
i["presentation_id"] = p.id
#Replace the components' _id
for j in i["components"]:
j["_id"] = str(ObjectId())
#Finally save the new slide
db.slides.insert(i)
# associate to userpresentation table
us_pr = UserPresentation(user_id=request.user.id,
presentation_id=p.id,
is_owner=1,
can_edit=1)
# save the association
us_pr.save()
# copy the thumbnail
# thumbnail_dst = settings.MEDIA_THUMBNAILS_ROOT + "/img_" + p.key + ".png"
# shutil.copy(thumbnail_src, thumbnail_dst)
# redirect to home page
return HttpResponseRedirect("/home")
def associate_to_user(self, user, is_owner, can_edit):
"""Associates a presentation to a user
Args:
user (User): the user to associate
is_owner (bool): True if the user is owner of the presentation, otherwise False
can_edit (bool): True if the user can edit the presentation, otherwise False
"""
userpresentation = UserPresentation(
user_id=user.id, presentation_id=self.id, is_owner=is_owner, can_edit=can_edit
)
userpresentation.save()
def associate_to_user(self, user, is_owner, can_edit): """Associates a presentation to a user Args: user (User): the user to associate is_owner (bool): True if the user is owner of the presentation, otherwise False can_edit (bool): True if the user can edit the presentation, otherwise False """ userpresentation = UserPresentation(user_id = user.id, presentation_id = self.id, is_owner = is_owner, can_edit = can_edit) userpresentation.save()
def share(request, id): """Share the presentation to other users""" if request.method == "POST": presentation = Presentation.objects.get(pk = id) share_formset = formset_factory(SharePresentationForm) formset = share_formset(request.POST) if formset.is_valid(): for form in formset: user = User.objects.filter(email = form.cleaned_data["email"]).first() if user is not None: userpresentation = UserPresentation( presentation_id = presentation.id, user_id = user.id, can_edit = True if int(form.cleaned_data["permission"]) == 1 else False, is_owner = 0) userpresentation.save() # redirect to the same page return HttpResponseRedirect(request.META["HTTP_REFERER"])
def view(request, key):
"""Show the presentation"""
# get the presentation data based on its key
p = Presentation.objects.get(key=key)
if p.is_private:
uspr = UserPresentation()
if not uspr.is_allowed(request.user.id, p.id):
raise Http404
# Load slides from MongoDB
conn = pymongo.Connection(settings.MONGODB_URI)
db = conn[settings.MONGODB_DATABASE]
slides = db.slides.find({"presentation_id": p.id})
# show the presentation preview
return render_to_response("view.html", {
"presentation":p,
"slides":slides,
}, context_instance=RequestContext(request))
def share(request, id):
"""Share the presentation to other users"""
if request.method == "POST":
presentation = Presentation.objects.get(pk=id)
share_formset = formset_factory(SharePresentationForm)
formset = share_formset(request.POST)
if formset.is_valid():
for form in formset:
user = User.objects.filter(
email=form.cleaned_data["email"]).first()
if user is not None:
userpresentation = UserPresentation(
presentation_id=presentation.id,
user_id=user.id,
can_edit=True if int(
form.cleaned_data["permission"]) == 1 else False,
is_owner=0)
userpresentation.save()
# redirect to the same page
return HttpResponseRedirect(request.META["HTTP_REFERER"])
def edit(request, key=None):
"""Open the presentation editor screen"""
template_data = {}
if not key:
template_data["is_anonymous"] = True
else:
try:
p = Presentation.objects.get(key=key)
# check if user is allowed to edit this presentation
if UserPresentation.objects.filter(user_id=request.user.id, presentation_id=p.id, can_edit=1).exists():
# get user data
user_data = {
"username": request.user.username,
"first_name": request.user.first_name,
"last_name": request.user.last_name,
}
# generate share form
uspr = UserPresentation()
share_formset = uspr.load_share_form(p.id, request.user.id)
template_data["presentation"] = p
template_data["is_anonymous"] = False
template_data["user_data"] = user_data
template_data["share_formset"] = share_formset
template_data["NODEJS_URL"] = settings.NODEJS_URL
else:
raise ObjectDoesNotExist
except ObjectDoesNotExist:
return HttpResponseRedirect("/")
# show the editor page
return render_to_response("edit.html", template_data, context_instance=RequestContext(request))
