I have a problem with the output of the json object sent from the server, for some reason I can not get and display the message contained in the response from the server. What am I doing wrong? Thanks for any help. Below is the code for my application.
service :
import { Injectable } from '@angular/core';
import { HttpClient, HttpHeaders, HttpRequest } from '@angular/common/http';
import { User } from './user';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/map';
import { ResponseObject } from './response-object';
@Injectable()
export class MntApiService {
private mntAPI = 'http://localhost:3000';
constructor(private _http: HttpClient) {
}
getUsers(): Observable<any> {
return this._http.get<any>(this.mntAPI + '/users');
}
addUser(email: string, password: string): Observable<any> {
return this._http.post<any>(this.mntAPI + '/signup', { email, password }, )
.map((response: Response) => response);
}
}
component:
import { Component, OnInit } from '@angular/core';
import { FormGroup, FormBuilder, Validators } from '@angular/forms';
import { HttpErrorResponse, HttpResponse } from '@angular/common/http';
import { Router } from '@angular/router';
import { MntApiService } from '../mnt-api.service';
import { User } from '../user';
import { ResInterceptor } from '../res-interceptor';
@Component({
selector: 'app-signup-page',
templateUrl: './signup-page.component.html',
styleUrls: ['./signup-page.component.scss']
})
export class SignupPageComponent implements OnInit {
users: any = [];
myForm: FormGroup;
response: {
body: {
succes: boolean,
message: string,
status: number
}
};
constructor(
private mntApiService: MntApiService,
private fb: FormBuilder,
public routes: Router) {
}
ngOnInit() {
this.initForm();
}
private initForm(): void {
this.myForm = this.fb.group({
// type: null,
email: [null, [
Validators.required, Validators.email
]],
password: [null, [
Validators.required
]]
});
}
isControlInvalid(controlName: string): boolean {
const control = this.myForm.controls[controlName];
const result: boolean = control.invalid && control.touched;
return result;
}
addUser() {
const val = this.myForm.value;
const controls = this.myForm.controls;
if (this.myForm.invalid) {
Object.keys(controls)
.forEach(controlName => controls[controlName].markAsTouched());
return;
} else {
val.email = val.email.trim();
val.password = val.password.trim();
if (!val.email && !val.password) {
return;
}
this.mntApiService.addUser(val.email, val.password)
.subscribe(user => {
this.users.push(user);
},
response => { this.response = response; });
console.log(this.response);
return;
}
}
}
component.html
<div class="container pt-5">
<form [formGroup]="myForm">
<div class="form-group">
<label for="email">Email address</label>
<small class="form-text text-danger">
{{response?.body.message}}
</small>
<input formControlName="email" type="email" class="form-control" id="email" placeholder="Enter email" autocomplete="email">
<small *ngIf="isControlInvalid('email')" class="form-text text-danger">неправельный формат почты</small>
</div>
<div class="form-group">
<label for="password">Password</label>
<input formControlName="password" type="password" class="form-control" id="password" placeholder="Password"
autocomplete="current-password">
<small *ngIf="isControlInvalid('password')" class="form-text text-danger">это поле не может быть пустым</small>
</div>
<button (click)="addUser()" class="btn btn-primary">Submit
</button>
</form>
</div>
and my node server code:
app.post('/signup', (req, res) => {
let sql = 'SELECT email FROM users WHERE email = ?';
let emailBody = [req.body.email];
config.query(sql, emailBody, (err, userEmail) => {
const errResponse = {
sacces: false,
message: 'Почта занята'
};
const rightResponse = {
'sacces': true,
'message': 'Пользователь создан',
'status': 201
};
if (userEmail.length < 0) {
res.status(409).send(errResponse);
console.log('mail exist!!!!');
return;
} else {
bcrypt.hash(req.body.password, 10, (err, hash) => {
if (err) {
return res.status(500).json({
error: err
});
} else {
let sql = 'INSERT INTO users ( email, password) VALUES ( ?, ?)';
let email = req.body.email;
let password = hash;
let body = [email, password];
config.query(sql, body, (err) => {
if (err) {
res.json({
"message": 'SQL Error'
});
} else {
//res.sendStatus(201);
res.status(201).send(rightResponse);
// res.status(201).json({
// 'message': "Спасибо за регестрацию"
// });
console.log('User created');
return;
}
});
}
});
}
});
});
please help who can, I'm a novice developer .
This is part of your code
this.mntApiService.addUser(val.email, val.password)
.subscribe(user => {
this.users.push(user);
},
response => { this.response = response; });
What you are doing here it that you are passing the subscribe
method 2 parameters. The first parameter is this function
user => {
this.users.push(user);
}
The second parameter is this function
response => { this.response = response; }
The function you pass to subscribe
as second parameter gets executed when an error occurs, which I guess is not what you want.
Probably an implementation like this should do the trick for you
this.mntApiService.addUser(val.email, val.password)
.subscribe(response => {
response => { this.response = response; });
// this.users.push(user); CHECK THIS LINE - YOU ARE NOT RECEIVING A USER FROM THE SERVER BUT A MESSAGE
};
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