def edit_discussion(request, id):
"""edit a discussion"""
# prepare messages
mm = MessageManager(request)
d = get_object_or_404(Discussion, pk=id)
if request.user.is_authenticated() and request.user.username == d.user.username:
if request.POST:
form = CreateDiscussionForm(request.POST, request.FILES, user=request.user)
if form.is_valid():
form.update(request, d)
mm.set_success("Your discussion has been updated")
return redirect(d.get_absolute_url())
else:
# form had errors
return render(request, 'main/discussion/edit.html', mm.messages(), {'form':form, 'discussion':d})
else:
# prepare new form for user
dpk = None
if d.group():
dpk = d.group().pk
term_str = delim_list(object_taxon(d), ',')
form = CreateDiscussionForm(user=request.user, initial={'group': dpk, 'title':d.title, 'body':d.body, 'type':d.type, 'terms':term_str})
return render(request, 'main/discussion/edit.html', mm.messages(), {'form':form, 'discussion':d})
else:
return redirect(request.META.get('HTTP_REFERER','/'))
def edit_link(request, id):
"""edit a link"""
# prepare messages
mm = MessageManager(request)
link = get_object_or_404(Link, pk=id)
if request.user.is_authenticated() and request.user.username == link.user.username:
if request.POST:
form = CreateLinkForm(request.POST, request.FILES, user=request.user)
if form.is_valid():
form.update(request, link)
mm.set_success("Your link has been updated")
return redirect(link.get_absolute_url())
else:
# form had errors
return render(request, 'main/link/edit.html', mm.messages(), {'form':form, 'link':link})
else:
# prepare new form for user
lpk = None
if link.group():
lpk = link.group().pk
term_str = delim_list(object_taxon(link), ',')
form = CreateLinkForm(user=request.user, initial={'group': lpk, 'title':link.title, 'url':link.url, 'terms':term_str})
return render(request, 'main/link/edit.html', mm.messages(), {'form':form, 'link':link})
else:
return redirect(request.META.get('HTTP_REFERER','/'))
def edit_code_package(request, id):
"""edit a code package"""
# prepare messages
mm = MessageManager(request)
cp = get_object_or_404(CodePackage, pk=id)
if request.user.is_authenticated() and request.user.username == cp.user.username:
if request.POST:
form = EditCodePackageForm(request.POST, user=request.user)
if form.is_valid():
form.save(request, cp)
mm.set_success("Your code package has been updated")
return redirect(cp.get_absolute_url())
else:
# form had errors
return render(request, 'main/code_package/edit.html', mm.messages(), {'form':form, 'code_package':cp})
else:
# prepare new form for user
cpk = None
if cp.group():
cpk = cp.group().pk
term_str = delim_list(object_taxon(cp), ',')
form = EditCodePackageForm(user=request.user, initial={'group': cpk, 'title':cp.title, 'description':cp.description, 'terms':term_str})
return render(request, 'main/code_package/edit.html', mm.messages(), {'form':form, 'code_package':cp})
else:
return redirect(request.META.get('HTTP_REFERER','/'))
def SearchCore(query=None, start=0, len=RESULTS_PER_PAGE, sort_by=0, object_type=None, tags=list()):
"""
query the database for objects, and sort by either search rank (0) or user rating (1).
query: query string, start: starting node in results list, len: number of nodes in results, sort_by: sorting method, object_type: object type filter
"""
# TODO: organize this better
# return tag results
if tags:
results = list()
if object_type:
results.extend(Taxon.objects.get_objects_of_type_for_term(term_list=tags, object_type=object_type))
else:
results.extend(Taxon.objects.get_objects_of_type_for_term(term_list=tags, object_type=Discussion))
results.extend(Taxon.objects.get_objects_of_type_for_term(term_list=tags, object_type=CodePackage))
results.extend(Taxon.objects.get_objects_of_type_for_term(term_list=tags, object_type=Link))
return SearchMeta(results=results[start:start+len], node_count=results.__len__(), query=query, page_len=len, start=start, prev=start-1, next=start+len)
# default query
if query == None or query == "":
if object_type is None:
return None
else:
results = list()
# TODO: validate the class type
results.extend(object_type._default_manager.all().reverse())
return SearchMeta(results=results[start:start+len], node_count=results.__len__(), query=query, page_len=len, start=start, prev=start-1, next=start+len)
#results = list()
#
#if object_type is None:
# results.extend(CodePackage._default_manager.all().reverse())
# results.extend(Discussion._default_manager.all().reverse())
# results.extend(Link._default_manager.all().reverse())
#else:
# results.extend(object_type._default_manager.all().reverse())
#sMeta = SearchMeta(results=results[start:start+len], node_count=results.__len__(), query=None, page_len=len, start=start, prev=start-1, next=start+len)
#return sMeta
# setup
ranker = tfidf()
ranker.set_query(query)
ranker.is_strict(False)
# add discussions
for d in Discussion.objects.iterator():
mylist = (t.term for t in object_taxon(d))
doc = tfidf_doc("%s %s" % (d.body, d.title), d.pk, d.__class__.__name__)#, (t.term.term for t in object_taxon(d)))
ranker.add_document(doc)
# add links
for d in Link.objects.iterator():
doc = tfidf_doc(d.title, d.pk, d.__class__.__name__)#, (t.term.term for t in object_taxon(d)))
ranker.add_document(doc)
# add code packages
for d in CodePackage.objects.iterator():
doc = tfidf_doc("%s %s" % (d.description, d.title), d.pk, d.__class__.__name__)#, (t.term.term for t in object_taxon(d)))
ranker.add_document(doc)
# add comments
for c in Comment.objects.iterator():
doc = tfidf_doc(c.comment, c.pk, c.__class__.__name__)
ranker.add_document(doc)
# add groups
for g in cGroup.objects.iterator():
doc = tfidf_doc("%s %s" % (g.description, g.name), g.pk, g.__class__.__name__)
ranker.add_document(doc)
# add curriculums
for c in Curriculum.objects.iterator():
doc = tfidf_doc("%s %s" % (c.description, c.title), c.pk, c.__class__.__name__)
ranker.add_document(doc)
# add lessons
for l in Lesson.objects.iterator():
doc = tfidf_doc("%s %s" % (l.description + ' ' + l.body , l.title), l.pk, l.__class__.__name__)
ranker.add_document(doc)
# rank it!
ranks = ranker.rank_it()
# collect objects
results = list()
for r in ranks:
if r.class_name == "Discussion":
try:
d = Discussion.objects.get(id=r.id)
d.search_rank = r.key()
results.append(d)
except Discussion.DoesNotExist:
raise Exception("TF-IDF: tfidf_doc.id is invalid or corrupt. Sought Discussion id %s but found none." % (r.id))
elif r.class_name == "CodePackage":
try:
d = CodePackage.objects.get(id=r.id)
d.search_rank = r.key()
results.append(d)
except CodePackage.DoesNotExist:
raise Exception("TF-IDF: tfidf_doc.id is invalid or corrupt. Sought CodePackage id %s but found none." % (r.id))
elif r.class_name == "Link":
try:
d = Link.objects.get(id=r.id)
d.search_rank = r.key()
results.append(d)
except Link.DoesNotExist:
raise Exception("TF-IDF: tfidf_doc.id is invalid or corrupt. Sought Link id %s but found none." % (r.id))
elif r.class_name == "Comment":
try:
d = Comment.objects.get(id=r.id)
d.search_rank = r.key()
results.append(d)
except Comment.DoesNotExist:
raise Exception("TF-IDF: tfidf_doc.id is invalid or corrupt. Sought Comment id %s but found none." % (r.id))
elif r.class_name == "cGroup":
try:
d = cGroup.objects.get(id=r.id)
d.search_rank = r.key()
results.append(d)
except cGroup.DoesNotExist:
raise Exception("TF-IDF: tfidf_doc.id is invalid or corrupt. Sought cGroup id %s but found none." % (r.id))
elif r.class_name == "Curriculum":
try:
d = Curriculum.objects.get(id=r.id)
results.append(d)
except Curriculum.DoesNotExist:
raise Exception("TF-IDF: tfidf_doc.id is invalid or corrupt. Sought Curriculum id %s but found none." % (r.id))
elif r.class_name == "Lesson":
try:
d = Lesson.objects.get(id=r.id)
results.append(d)
except Lesson.DoesNotExist:
raise Exception("TF-IDF: tfidf_doc.id is invalid or corrupt. Sought Lesson id %s but found none." % (r.id))
sMeta = SearchMeta(results=results[start:start+len], node_count=results.__len__(), query=query, page_len=len, start=start, prev=start-1, next=start+len)
return sMeta
def HTMLWrapper(obj):
"""encapsulate searchable objects into template compatible nodes that can be displayed on the website."""
SNIPPET_LENGTH = 180
class Encapsulator():
"""create a compatable template node"""
def __init__(self, obj_class="", human_class="", url="", title="", rank=0, rating=0, snippet="", tags=list(), group=None, object=None):
self.obj_class = obj_class #machine readable class name
self.human_class = human_class #human readable class name
self.url = url
self.title = title
self.rank = rank
self.rating = rating
self.snippet = snippet
self.tags = tags
self.group = group
self.object = object
def get_absolute_url():
return self.url
# display more link.
# display rank details.
# display tags
# display quick links?? like download, comment, etc.
if obj.__class__.__name__ == 'CodePackage':
return Encapsulator(obj_class=obj.__class__.__name__.lower(),
human_class = 'code package',
url=obj.get_absolute_url(),
title=obj.title,
rank=obj.search_rank,
rating=0,
snippet=shorten(obj.description, SNIPPET_LENGTH, "..."),
tags=object_taxon(obj),
group=obj.group,
object=obj)
elif obj.__class__.__name__ == 'Discussion':
return Encapsulator(obj_class=obj.__class__.__name__.lower(),
human_class = 'discussion',
url=obj.get_absolute_url(),
title=obj.title,
rank=obj.search_rank,
rating=0,
snippet=shorten(obj.body, SNIPPET_LENGTH, "..."),
tags=object_taxon(obj),
group=obj.group,
object=obj)
elif obj.__class__.__name__ == 'Link':
return Encapsulator(obj_class=obj.__class__.__name__.lower(),
human_class = 'link',
url=obj.url,
title=obj.title,
rank=obj.search_rank,
rating=0,
snippet=shorten(obj.url, SNIPPET_LENGTH, "..."),
tags=object_taxon(obj),
group=obj.group,
object=obj)
elif obj.__class__.__name__ == 'Comment':
return Encapsulator(obj_class=obj.__class__.__name__.lower(),
human_class = 'comment',
url=obj.get_absolute_url(),
title=shorten(obj.comment, SNIPPET_LENGTH, "..."),
# TODO: find a more generic way to keep track of the search_rank
#rank=obj.search_rank,
rating=0,
snippet=shorten(obj.comment, SNIPPET_LENGTH, "..."),
tags=list())
elif obj.__class__.__name__ == 'cGroup':
return Encapsulator(obj_class=obj.__class__.__name__.lower(),
human_class = 'group',
url=obj.get_absolute_url(),
title=shorten(obj.name, SNIPPET_LENGTH, "..."),
rank=obj.search_rank,
rating=0,
snippet=shorten(obj.description, SNIPPET_LENGTH, "..."),
tags=list())
elif obj.__class__.__name__ == 'Curriculum':
return Encapsulator(obj_class=obj.__class__.__name__.lower(),
human_class = 'curriculum',
url=obj.get_absolute_url(),
title=shorten(obj.title, SNIPPET_LENGTH, "..."),
#rank=obj.search_rank,
rating=0,
snippet=shorten(obj.description, SNIPPET_LENGTH, "..."),
tags=list())
elif obj.__class__.__name__ == 'Lesson':
return Encapsulator(obj_class=obj.__class__.__name__.lower(),
human_class = 'lesson',
url=obj.get_absolute_url(),
title=shorten(obj.title, SNIPPET_LENGTH, "..."),
#rank=obj.search_rank,
rating=0,
snippet=shorten(obj.description + ' ' + obj.body, SNIPPET_LENGTH, "..."),
tags=list())
