class Taxonomy(db.Model):
"""
Table containing the taxonomy of a Node. Each term that can be assigned to the node is listed here.
"""
__tablename__ = "taxonomy"
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
node_id = db.Column(db.Integer, db.ForeignKey("node.id"), nullable=False)
term_id = db.Column(db.Integer, db.ForeignKey("term.id"), nullable=False)
created = db.Column(db.Integer, nullable=False)
@staticmethod
def add(**params):
params['created'] = int(time.time())
taxonomy_inst = Taxonomy(**params)
db.session.add(taxonomy_inst)
db.session.commit()
db.session.refresh(taxonomy_inst)
return taxonomy_inst.id
@staticmethod
def delete(**params):
taxonomy_inst = Taxonomy.query.filter_by(
node_id=params["node_id"], term_id=params["term_id"]).one()
db.session.delete(taxonomy_inst)
db.session.commit()
return True
class Lophoto(db.Model):
"""
Table containing information about the local pictures.
"""
__tablename__ = "lophoto"
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
node_id = db.Column(db.Integer, db.ForeignKey('node.id'))
filename = db.Column(db.Text, nullable=False)
uri = db.Column(db.Text, nullable=False)
created = db.Column(db.Integer, nullable=False)
class Term(db.Model):
"""
Table containing the Terms from a Vocabulary.
"""
__tablename__ = "term"
id = db.Column(db.Integer, primary_key=True)
vocabulary_id = db.Column(db.Integer,
db.ForeignKey("vocabulary.id"),
nullable=False)
name = db.Column(db.Text, nullable=False)
description = db.Column(db.Text)
@staticmethod
def add(**params):
term_inst = Term(**params)
db.session.add(term_inst)
db.session.commit()
db.session.refresh(term_inst)
return term_inst.nid
class Content(db.Model):
"""
Table with Node Title and Node Contents.
"""
__tablename__ = "content"
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
node_id = db.Column(db.Integer, db.ForeignKey('node.id'))
title = db.Column(db.Text, nullable=False)
body = db.Column(db.Text)
@staticmethod
def delete(nid):
try:
content_inst = Content.query.filter_by(node_id=nid).one()
except NoResultFound:
current_app.logger.info(
"Trying to remove content record for node id {nid}, but no record found..."
.format(nid=nid))
else:
db.session.delete(content_inst)
db.session.commit()
return True
@staticmethod
def update(**params):
"""
This method will add or edit the node title or body.
:param params: Dictionary with node_id, title and body as fields.
:return:
"""
try:
content_inst = db.session.query(Content).filter_by(
node_id=params['node_id']).one()
content_inst.title = params["title"]
content_inst.body = params["body"]
except NoResultFound:
content_inst = Content(**params)
db.session.add(content_inst)
db.session.commit()
db.session.refresh(content_inst)
return content_inst.id
class Photo(db.Model):
"""
Table containing information about the pictures on pcloud. A picture can be used by a single node only.
"""
__tablename__ = "photo"
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
node_id = db.Column(db.Integer, db.ForeignKey('node.id'))
filename = db.Column(db.Text, nullable=False)
orig_filename = db.Column(db.Text)
created = db.Column(db.Integer, nullable=False)
fresh = db.Column(db.Integer)
@staticmethod
def add(**params):
photo_inst = Photo(**params)
db.session.add(photo_inst)
db.session.commit()
db.session.refresh(photo_inst)
return photo_inst.id
@staticmethod
def delete(node_id):
"""
This method will delete the node - photo record. This happens when the node is deleted or if the node changes
from type photo to type blog or when a new blog record is created, so delete may be called for non-existing
records.
The photo record is deleted but the photo is not removed from storage (pcloud).
:param node_id: ID of the node attached to this picture..
:return: 1 - integer.
"""
try:
photo_inst = db.session.query(Photo).filter_by(
node_id=node_id).one()
except NoResultFound:
current_app.logger.info(
"Got a request to delete Photo record for node ID {nid}, but nid not found"
.format(nid=node_id))
else:
current_app.logger.info(
"Delete Node {nid} with Photo ID {pid} from Photo".format(
nid=node_id, pid=photo_inst.id))
db.session.delete(photo_inst)
db.session.commit()
return 1
@staticmethod
def edit(**params):
"""
This method will edit the photo record, based on the Node ID. Attributes in params are set, attributes not in
params are left untouched.
:param params: Dictionary with node_id as identifying record.
:return:
"""
photo_inst = db.session.query(Photo).filter_by(
node_id=params['node_id']).first()
for k, v in params.items():
setattr(photo_inst, k, v)
db.session.commit()
return
@staticmethod
def get_node_id(filename):
"""
This method returns the node_id for the Photo record for picture filename, or None if the filename is not found.
:param filename: Filename for which node_id needs to be returned.
:return: node_id - or None if node_id is not found.
"""
photo_inst = db.session.query(Photo).filter_by(
filename=filename).first()
if photo_inst:
return photo_inst.node_id
else:
return None
class Node(db.Model):
"""
Table containing the information of the database.
Relationship type is called: Adjacency list.
"""
__tablename__ = "node"
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
parent_id = db.Column(db.Integer, db.ForeignKey('node.id'), nullable=False)
created = db.Column(db.Integer, nullable=False)
modified = db.Column(db.Integer, nullable=False)
revcnt = db.Column(db.Integer)
type = db.Column(db.Text)
children = db.relationship("Node",
backref=db.backref('parent', remote_side=[id]))
content = db.relationship("Content", backref="node", uselist=False)
lophoto = db.relationship("Lophoto", backref="node", uselist=False)
photo = db.relationship("Photo", backref="node", uselist=False)
terms = db.relationship("Term", secondary="taxonomy", backref="nodes")
@staticmethod
def add(**params):
params['created'] = int(time.time())
params['modified'] = params['created']
params['revcnt'] = 1
if "parent_id" not in params:
params["parent_id"] = -1
node_inst = Node(**params)
db.session.add(node_inst)
db.session.commit()
db.session.refresh(node_inst)
return node_inst.id
@staticmethod
def edit(node_id):
"""
This method will edit the node by updating modified timestamp and revision count.
:param node_id: ID of the node to be modified.
:return:
"""
node_inst = db.session.query(Node).filter_by(id=node_id).first()
node_inst.modified = int(time.time())
node_inst.revcnt += 1
# If node has a photo attached to it, set fresh to 0
if node_inst.photo:
node_inst.photo.fresh = 0
db.session.commit()
return
@staticmethod
def outline(**params):
"""
This method will update the parent for the node. params needs to have nid and parent_id as keys.
:param params: Dictionary with nid and parent_id as keys.
:return:
"""
node_inst = db.session.query(Node).filter_by(nid=params['nid']).first()
node_inst.parent_id = params['parent_id']
node_inst.modified = int(time.time())
node_inst.revcnt += 1
db.session.commit()
return
@staticmethod
def delete(nid):
try:
node_inst = Node.query.filter_by(id=nid).one()
except NoResultFound:
current_app.logger.info(
"Trying to remove node record for node ID {nid}, but no record found"
.format(nid=nid))
else:
if node_inst.type == "photo":
Photo.delete(nid)
# Remove Content record
Content.delete(nid)
# Then remove node record.
db.session.delete(node_inst)
db.session.commit()
return True
@staticmethod
def set_created(nid):
# Set node created date to Create Date picture
node_inst = Node.query.filter_by(id=nid).one()
nc = node_inst.created
created = node_inst.photo.created
current_app.logger.info(
"Node created datestamp from {nc} to {fd}".format(nc=datestamp(nc),
fd=created))
node_inst.created = created
db.session.commit()
return