def create_nodes_for_path(path, authors=()):
nodes, last = parse_path(path)
current_node = get_root_node()
current_path = ""
for short_title, index in nodes:
# slot
current_path += '/' + short_title
try:
current_slot = get_node_for_path(current_path)
except IllegalPath:
current_slot = create_slot(short_title)
current_node.append_child(current_slot)
# alternatives
current_path += '.' + str(index)
try:
current_node = get_node_for_path(current_path)
except IllegalPath:
if current_slot.child_order_set.count() == 0:
highest_index = 0
else:
highest_index = current_slot.child_order_set.order_by(
'position')[0].position
for i in range(highest_index, index):
current_node = create_structureNode(short_title + '_long',
authors=authors)
current_slot.append_child(current_node)
return current_node
def get_node_for_path(path):
"""
Return the node corresponding node to the given path.
"""
node = get_root_node()
layers, last = parse_path(path)
for title, pos_id in layers:
children = node.children.filter(title=title).all()
if len(children) != 1:
raise IllegalPath(path)
else:
order = NodeOrder.objects.filter(parent__in=children).\
filter(position=pos_id).prefetch_related('child').all()
if len(order) != 1:
raise IllegalPath(path)
else:
node = order[0].child
if 'slot' in last:
children = node.children.filter(title=last['slot']).all()
if len(children) != 1:
raise IllegalPath(path)
else:
node = children[0]
elif 'arg_type' in last and 'arg_id' in last:
argument_order = ArgumentOrder.objects.filter(node=node).\
filter(position=last['arg_id']).prefetch_related('argument').all()
if len(argument_order) != 1:
raise IllegalPath(path)
else:
node = argument_order[0].argument
return node
def create_nodes_for_path(path, authors=()):
nodes, last = parse_path(path)
current_node = get_root_node()
current_path = ""
for short_title, index in nodes:
# slot
current_path += '/' + short_title
try:
current_slot = get_node_for_path(current_path)
except IllegalPath:
current_slot = create_slot(short_title)
current_node.append_child(current_slot)
# alternatives
current_path += '.' + str(index)
try:
current_node = get_node_for_path(current_path)
except IllegalPath:
if current_slot.child_order_set.count() == 0:
highest_index = 0
else:
highest_index = current_slot.child_order_set.order_by(
'position')[0].position
for i in range(highest_index, index):
current_node = create_structureNode(short_title + '_long',
authors=authors)
current_slot.append_child(current_node)
return current_node