尝试使用mongoose模式中的objectid作为参考来执行put来更新集合中的文档。控制台会将其记录为成功,但是当我刷新页面或查看mongo shell时,没有任何变化。
继续使用expressjs路由器:
router.put('/messageupdate/:empId', function (req, res) {
var values = req.body;
console.log(values);
var empId = req.params.empId;
console.log(empId);
Message.update({empId: empId}, values, function(err, values) {
if (!err) {
res.json("okay");
} else {
res.write("fail");
}
});
})
下面是服务方法:
updateServiceWithId(message: Message): Observable<any> {
console.log(message);
const body = JSON.stringify(message);
console.log(body);
const headers = new Headers({'Content-Type': 'application/json'});
return this.http.put('http://localhost:3000/messageupdate/:empId', body, {headers: headers});
}
接下来是触发put的客户端方法:
onUpdateMessage() {
var retVal = confirm("Do you want to continue ?");
if( retVal == true ){
const message = new Message(this.fname,this.lname,this.empId,this.number,this.occu);
console.log(this.fname);console.log(this.lname);
console.log(this.empId);console.log(this.occu);
this.messages.push(message);
this.messageService.updateServiceWithId(message)
.subscribe(
() => console.log('Success!'),
error => console.error(error)
);
}
else{
alert("Edit cancled!");
return false;
}
}