Dictionary 无法在google app engine数据存储中的go中插入动态属性
我正试图从这个岗位上工作 无法将数据插入数据存储,它仅在创建IDDictionary 无法在google app engine数据存储中的go中插入动态属性,dictionary,google-app-engine,go,datastore,Dictionary,Google App Engine,Go,Datastore,我正试图从这个岗位上工作 无法将数据插入数据存储,它仅在创建ID import ( "log" "net/http" "time" "github.com/julienschmidt/httprouter" "google.golang.org/appengine" "google.golang.org/appengine/datastore" ) type DynEnt map[string]interface{} func (d *Dy
import (
"log"
"net/http"
"time"
"github.com/julienschmidt/httprouter"
"google.golang.org/appengine"
"google.golang.org/appengine/datastore"
)
type DynEnt map[string]interface{}
func (d *DynEnt) Load(props []datastore.Property) error {
// Note: you might want to clear current values from the map or create a new map
for _, p := range props {
(*d)[p.Name] = p.Value
}
return nil
}
func (d *DynEnt) Save() (props []datastore.Property, err error) {
for k, v := range *d {
props = append(props, datastore.Property{Name: k, Value: v})
}
return nil, nil
}
//GetAccountHandler is to
func GetAccountHandler(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
c := appengine.NewContext(r)
d := DynEnt{"email": "me@myhost.com", "time": time.Now()}
log.Println("d=>", d)
log.Println("&d=>", &d)
k := datastore.NewIncompleteKey(c, "DynEntity", nil)
key, err := datastore.Put(c, k, &d)
log.Fatalf("%v %v", key, err)
}
中有一个输入错误,Save()
末尾的返回值是复制/粘贴错误(来自频道版本)。正确的版本是:
func (d *DynEnt) Save() (props []datastore.Property, err error) {
for k, v := range *d {
props = append(props, datastore.Property{Name: k, Value: v})
}
return
}
请注意,return
之后没有指定值,因为使用了命名的结果参数。指定nil,nil
将不会返回在Save()中构建的切片
您还可以在处理程序的末尾调用log.Fatalf()
,从而终止应用程序。请尝试log.Printf()