Inject submission extensions for teams

[wumb0]

models.py:

from datetime import timedelta

#need a many-to-many relational table for user InjectExtension relationship

class InjectExtension(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    inject_id = db.Column(db.Integer, db.ForeignKey('inject.id'), nullable=False)
    duration = db.Column(db.Integer, nullable=False) #in minutes
    start_time = db.Column(db.DateTime, default=datetime.now(), nullable=False)    

   @hybrid_property
    def has_ended(self):
        if datetime.now() > self.start_time + timedelta(minutes=self.duration):
            return True
        return True

class User(db.Model):
    ...
    extensions = db.relationship('InjectExtension', lazy='dynamic', backref='teams')

class Inject(db.Model):
    ...
    extensions = db.relationship('InjectExtension', lazy='dynamic', backref='inject')

injects.py:

    extensions = [x for x in inject.extensions if g.user == x.user and not x.has_ended]
    #if the extensions list is not empty then there is a valid extension for the current inject and the team should be allowed to submit, I guess this is the most elegant way to do this...

admin.py

class InjectExtensionAdmin(WhiteTeamModelView):
    form_args = {"duration": {"label": "Duration (in minutes)"}}

Need db delete after implementation.

This SHOULD be implemented as one-to-many on inject-to-extensions and many-to-many on user-to-extensions. I can do that I think.