def remove_discipline(self):
"""
Remove the discipline triples from triple store.
"""
discipline = self.get_object()
query = """
PREFIX pp: <http://www.semanticweb.org/ontologies/2018/Pedagogical_Project/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX dc: <http://purl.org/dc/elements/1.1/>
DELETE {
<%s> rdfs:subClassOf pp:Discipline ;
pp:belongsTo pp:Software_Engineering ;
pp:hasType pp:%s ;
pp:isInTheFlowOf pp:%s ;
pp:isPartOf pp:%s ;
dc:title "%s" ;
pp:code "%s" ;
dc:description "%s"
} WHERE {}
""" % (discipline.uri, create_uri(
discipline.classification), create_uri(
discipline.semester), create_uri(discipline.core_content),
discipline.title, discipline.code, discipline.description)
response = Query.update(query)
return response
def action(self, request, *args, **kwargs):
"""
Remove the triple from triple store.
"""
discipline = self.get_object()
required = self.get_required()
query = """
PREFIX pp: <http://www.semanticweb.org/ontologies/2018/Pedagogical_Project/>
DELETE {
<%s> pp:hasRequired <%s> .
<%s> pp:isRequiredOf <%s>
} WHERE {}
""" % (discipline.uri, required.uri, required.uri, discipline.uri)
response = Query.update(query)
if response == 204:
messages.success(self.request,
"Required discipline removed successfully")
else:
messages.success(self.request, "There was a server error")
return super(RemoveRequiredDisciplineView,
self).action(request, *args, **kwargs)
def remove_subtopics(self):
"""
Remove all subtopics from discipline.
"""
discipline = self.get_object()
subtopics = Disciplines.get_contents(discipline.uri)
if subtopics:
for subtopic in subtopics:
query = """
PREFIX pp: <http://www.semanticweb.org/ontologies/2018/Pedagogical_Project/>
DELETE {<%s> pp:hasContent <%s>} WHERE {}
""" % (discipline.uri, subtopic.uri)
Query.update(query)
def remove_requireds(self):
"""
Remove all requireds discipline from discipline.
"""
discipline = self.get_object()
requireds = Disciplines.get_requireds(discipline.uri)
if requireds:
for required in requireds:
query = """
PREFIX pp: <http://www.semanticweb.org/ontologies/2018/Pedagogical_Project/>
DELETE {
<%s> pp:hasRequired <%s> .
<%s> pp:isRequiredOf <%s>
} WHERE {}
""" % (discipline.uri, required.uri, required.uri,
discipline.uri)
Query.update(query)
def form_valid(self, form):
"""
Receive the form already validated to create a discipline.
"""
title = form.cleaned_data['title']
uri = create_uri(title)
code = form.cleaned_data['code']
description = form.cleaned_data['description']
classification = create_uri(form.cleaned_data['classification'])
flow = create_uri(form.cleaned_data['flow'])
core = create_uri(form.cleaned_data['core'])
query = """
PREFIX pp: <http://www.semanticweb.org/ontologies/2018/Pedagogical_Project/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX dc: <http://purl.org/dc/elements/1.1/>
INSERT {
pp:%s rdfs:subClassOf pp:Discipline ;
pp:belongsTo pp:Software_Engineering ;
pp:hasType pp:%s ;
pp:isInTheFlowOf pp:%s ;
pp:isPartOf pp:%s ;
dc:title "%s" ;
pp:code "%s" ;
dc:description "%s"
} WHERE {}
""" % (uri, classification, flow, core, title, code, description)
if self.discipline_exists(title):
messages.success(self.request, "This discipline already exists")
else:
response = Query.update(query)
if response == 204:
messages.success(self.request,
"Discipline created successfully")
else:
messages.success(self.request, "There was a server error")
return super(DisciplineCreateView, self).form_valid(form)
def action(self, request, *args, **kwargs):
"""
Insert content into discipline.
"""
discipline = self.get_object()
subtopic = self.get_subtopic()
query = """
PREFIX pp: <http://www.semanticweb.org/ontologies/2018/Pedagogical_Project/>
INSERT {<%s> pp:hasContent <%s>} WHERE {}
""" % (discipline.uri, subtopic.uri)
response = Query.update(query)
if response == 204:
messages.success(self.request, "Subtopic inserted successfully")
else:
messages.success(self.request, "There was a server error")
return super(InsertContentView, self).action(request, *args, **kwargs)
def action(self, request, *args, **kwargs):
"""
Remove the discipline triples from triple store.
"""
discipline = self.get_object()
self.remove_subtopics()
self.remove_requireds()
query = """
PREFIX pp: <http://www.semanticweb.org/ontologies/2018/Pedagogical_Project/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX dc: <http://purl.org/dc/elements/1.1/>
DELETE {
<%s> rdfs:subClassOf pp:Discipline ;
pp:belongsTo pp:Software_Engineering ;
pp:hasType pp:%s ;
pp:isInTheFlowOf pp:%s ;
pp:isPartOf pp:%s ;
dc:title "%s" ;
pp:code "%s" ;
dc:description "%s"
} WHERE {}
""" % (discipline.uri, create_uri(
discipline.classification), create_uri(
discipline.semester), create_uri(discipline.core_content),
discipline.title, discipline.code, discipline.description)
response = Query.update(query)
if response == 204:
messages.success(self.request, "Discipline removed successfully")
else:
messages.success(self.request, "There was a server error")
return super(DisciplineRemoveView,
self).action(request, *args, **kwargs)