PHP: respond to AJAX post request
Question
I'm using angular to retrieve json data via get request. I would like to update the json file similarly by post, and have PHP respond by sending back the updated json. The problem is that the page is not updating (ajax) when the json file is updated.
HTML
<html ng-app="myApp">
<body ng-controller="mainController">
<div>
<h3>Rules</h3>
<ul>
<li ng-repeat="rule in rules">{{rule.rulename}}</li>
</ul>
</div>
<div>
<label>New Rules:</label>
<input type="text" ng-model="newRule" />
<input type="button" ng-click="addRule()" value="Add" />
</div>
JavaScript
var myApp = angular.module('myApp', []);
myApp.controller('mainController', ['$scope','$http', function($scope, $scope.getItems = function() {
$http.get("localhost:8888/json/newRules.json")
.then(
function(response){
//success callback
$scope.rules = response.data;
},
function(response){
// failure callback
console.log(response);
}
);
};
$scope.getItems();
$scope.newRule = '';
$scope.addRule = function() {
$http.post("localhost:8888/json/newRules.json", JSON.stringify([{rulename: $scope.newRule}]))
.then(
function(response){
//success callback
$scope.getItems();
$scope.rules = response;
$scope.newRule = '';
},
function(response){
// failure callback
console.log(response);
}
);
};
}]);
PHP
<?php
$data = file_get_contents("newRules.json");
$data2 = file_get_contents("php://input");
$postData = json_decode($data);
$postData2 = json_decode($data2);
$newArray = array_merge($postData, $postData2);
$newPost = json_encode($newArray);
file_put_contents("newRules.json", $newPost);
?>
2 answers
solution1
2 ACCPTED 2016-02-10 16:22:48
As I remember angular doesn't automatically add an application/x-www-form-urlencoded header to requests, so on the php side you may also need to decode the POST data this way:
// get the POST data
$data = file_get_contents("php://input");
$postData = json_decode($data);
// process the data
// ...
// send response
echo json_encode($responseData);
Or you can configure angular to send the header, see the details here .
solution2
0 2016-02-10 16:17:07
use json_encode function to send response in json
check http://php.net/manual/en/function.json-encode.php
in your php script you need to do
echo json_encode(['id'=>123]);
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