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add TemplateFolder model

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a TemplateFolder has a service, a name, and a parent. Parent is a
nullable foreign key pointing to another TemplateFolder instance. We
don't do any checks here for cyclical or otherwise invalid folder
structures so keep your data clean, folks!

Unsurprisingly, a Template can be part of a TemplateFolder - there's a
mapping class (template_folder_map to avoid giving it a dumb name) -
this mapping table shouldn't be interacted with directly - rather, you
should use the `Template.folder` or `TemplateFolder.templates`
relationship.
This commit is contained in:
Leo Hemsted
2018-10-26 16:01:31 +01:00
parent 6bd3cb1f27
commit 936c8489b3
2 changed files with 67 additions and 0 deletions
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28
app/models.py
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@@ -706,6 +706,27 @@ class TemplateProcessTypes(db.Model):
name = db.Column(db.String(255), primary_key=True)
class TemplateFolder(db.Model):
__tablename__ = 'template_folder'
id = db.Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
service_id = db.Column(UUID(as_uuid=True), db.ForeignKey('services.id'), nullable=False)
name = db.Column(db.String, nullable=False)
parent_id = db.Column(UUID(as_uuid=True), db.ForeignKey('template_folder.id'), nullable=True)
service = db.relationship('Service')
parent = db.relationship('TemplateFolder', remote_side=[id], backref='children')
template_folder_map = db.Table(
'template_folder_map',
db.Model.metadata,
# template_id is a primary key as a template can only belong in one folder
db.Column('template_id', UUID(as_uuid=True), db.ForeignKey('templates.id'), primary_key=True, nullable=False),
db.Column('template_folder_id', UUID(as_uuid=True), db.ForeignKey('template_folder.id'), nullable=False),
)
PRECOMPILED_TEMPLATE_NAME = 'Pre-compiled PDF'
@@ -837,6 +858,13 @@ class Template(TemplateBase):
service = db.relationship('Service', backref='templates')
version = db.Column(db.Integer, default=0, nullable=False)
folder = db.relationship(
'TemplateFolder',
secondary=template_folder_map,
uselist=False,
backref=db.backref('templates', lazy='dynamic')
)
def get_link(self):
# TODO: use "/v2/" route once available
return url_for(