/**
* データストアの単語をすべて削除する
* ajaxから呼び出すためのAPI
*/
func clear(w http.ResponseWriter, r *http.Request) {
var c appengine.Context
var u *user.User
var keys []*datastore.Key
var err error
var query *datastore.Query
var count int
var entities []Entity
c = appengine.NewContext(r)
u = user.Current(c)
query = datastore.NewQuery("words").Filter("UserID =", u.ID)
count, err = query.Count(c)
Check(c, err)
entities = make([]Entity, count)
keys, err = query.GetAll(c, &entities)
Check(c, err)
err = datastore.DeleteMulti(c, keys)
Check(c, err)
}
// Count returns the number of results for the query.
func (g *Goon) Count(q *datastore.Query) (int, error) {
return q.Count(g.Context)
}
func GetCount(c appengine.Context, q *datastore.Query) (int, error) {
return q.Count(c)
}