def save(self, doc):
        if doc.id:
            return self.update(doc)
        else:
            return self.insert(doc)
def drawMe(self, g):
        self.g = g
        self.g.beginPath()
        self.g.moveTo(self.p1.x,self.p1.y)
        self.g.lineTo(self.p2.x,self.p2.y)
        self.g.stroke()