【发布时间】:2020-01-30 02:55:18
【问题描述】:
当我单击它时,它会添加数据,但是当我刷新页面时,我可以看到它已添加。 像这样删除是做同样的问题。我删除了,但我只能看到刷新页面时,它被删除了。我该如何解决这种情况?
app.component.ts
constructor(private srv: UserServiceService) {}
users: any = [];
checkForm: any;
name: FormControl;
surname: FormControl;
age: FormControl;
async ngOnInit() {
(this.name = new FormControl(
"",
Validators.compose([Validators.required])
)),
(this.surname = new FormControl(
"",
Validators.compose([Validators.required])
)),
(this.age = new FormControl(
null,
Validators.compose([Validators.required])
));
this.getAllUsers();
}
async getAllUsers() {
await this.srv.allUsers().subscribe(val => {
this.users = val;
});
}
addUserFunction() {
this.srv
.addUserService(this.name, this.surname, this.age)
.subscribe(val => {
console.log("val: ", val);
});
this.name.reset();
this.surname.reset();
this.age.reset();
}
async deleteUser(id) {
await this.srv.deleteUserService(id).subscribe(user => {
console.log(user);
});
}
user-service.service.ts
export class UserServiceService {
constructor(private http: HttpClient) {}
allUsers() {
return this.http.get("http://localhost:3000/get_users");
}
addUserService(name, surname, age) {
return this.http.post("http://localhost:3000/add_user", {
name: name,
surname: surname,
age: age
});
}
deleteUserService(id) {
return this.http.delete("http://localhost:3000/delete_user/" + id);
}
}
【问题讨论】:
标签: node.js angular mongodb mongodb-query