func (c *C) Update(a iface.Filter, data map[string]interface{}) error {
files_map, has := data["_files"].(map[string]interface{})
upd := map[string]interface{}{
"$set": data,
}
if has {
ids, err := a.Ids()
if err != nil {
return err
}
err = c.moveFiles(a.Subject(), ids[0].Hex(), files_map)
if err != nil {
return err
}
delete(data, "_files")
upd["$addToSet"] = eachIfNeeded(fileheadersToFilenames(files_map))
}
err := a.Update(upd)
if err != nil {
return err
}
if c.Ev != nil {
c.Ev.Fire("Updated", a)
c.Ev.Fire(a.Subject()+"Updated", a)
}
return nil
}
func (f *Filter) Reduce(a ...iface.Filter) (iface.Filter, error) {
l := len(a)
if l == 0 {
return &Filter{}, fmt.Errorf("Nothing to reduce.")
}
var prev iface.Filter
prev = f
for _, v := range a {
ids, err := prev.Ids()
if err != nil {
return &Filter{}, err
}
v.AddParents("_"+prev.Subject(), ids)
prev = v
}
return prev, nil
}