Angular2 - Send POST request to server - php

Question

I'm building a mobile app to display news feed. In my app, one should be able to post a status.
The status will be sent to PHP server using POST method.
Now my problem is PHP cant read the POST request I sent using angular2.
This is my code:
form.html
<form class="sample-form post-form" [formGroup]="post_form" (ngSubmit)="createStatus()">
<ion-item>
<ion-textarea rows="7" placeholder="What's happening?'" formControlName="status"></ion-textarea>
</ion-item>
<section class="form-section">
<button ion-button block class="form-action-button create-post-button" type="submit" [disabled]="!post_form.valid">Post</button>
</section>
</form>
form.ts
import { Component } from '#angular/core';
import { NavController, AlertController } from 'ionic-angular';
import { Validators, FormGroup, FormControl } from '#angular/forms';
import { Http, Headers } from '#angular/http';
import 'rxjs/add/operator/map';
#Component({
selector: 'form-page',
templateUrl: 'form.html'
})
export class FormLayoutPage {
section: string;
post_form: any;
url: string;
headers: Headers;
constructor(public nav: NavController, public alertCtrl: AlertController, public http: Http) {
this.headers = new Headers();
this.headers.append("Content-Type", "application/x-www-form-urlencoded");
this.section = "post";
this.post_form = new FormGroup({
status: new FormControl('', Validators.required),
});
}
createStatus(){
console.log(this.post_form.value);
this.url = "https://domain.com/mobileREST/poststatus.php";
this.http.post(this.url, this.post_form.value, { headers: this.headers})
.map(res => res.json())
.subscribe(res => {
console.log(res);
},
err => {
console.log(err);
})
}
}
poststatus.php
<?php
header('Access-Control-Allow-Origin: *');
header('Content-Type: application/json');
$status = $_POST["status"];
echo json_encode($status);
?>
Firebug Console:
I cant seem to find the error here. Really appreciate your help

Answer 1

I had the same problem. You can't send the POST params like the javascript object. You have to pass it like URLSearchParams. I've made a function which will do it for you. It will loop through the object and make URLSearchParam and return it as string.
private _buildParams(params: any) {
let urlSearchParams = new URLSearchParams();
for(let key in params){
if(params.hasOwnProperty(key)){
urlSearchParams.append(key, params[key]);
}
}
return urlSearchParams.toString();
}
And then you call http post:
this._http.post(this.url, this._buildParams(params), {headers: this.headers});

Answer 2

To get the posted data just add this line in your php file
// get posted data
$data = json_decode(file_get_contents("php://input"));