//Delete deletes the presentation record from Datastore and
//its data file from Blobstore.
func (p *Presentation) Delete(c appengine.Context) (err error) {
err = action.DeleteFor(p, c)
if err != nil {
return
}
err = gaemodel.Delete(c, p)
if err != nil {
return
}
err = blobstore.Delete(c, p.BlobKey)
return
}
//SaveConfig saves data provided into the Config record.
func (c *Config) Save(ctx appengine.Context) (err error) {
if c.Key() == nil {
ctx.Infof("Creating new config key")
key := datastore.NewIncompleteKey(ctx, "Config", nil)
c.SetKey(key)
} else if err != nil {
return
}
c.StandardOn = util.NormalizeTime(c.StandardOn)
c.StandardOff = util.NormalizeTime(c.StandardOff)
c.Timestamp = time.Now().Unix()
_, err = datastore.Put(ctx, c.Key(), c)
if err != nil {
return fmt.Errorf("Error when putting: %v", err)
}
action.DeleteFor(c, ctx)
return
}