How to pass array back to PHP using Ajax [duplicate] - php

Question

Is it possible to work with a response from AJAX request in PHP? I am not really a JS dev so i am polling my hair out with this one.
I have sort of hacked this together:
var base_url = 'http://dev.local/westview/public';
$('select.child_id').change(function() {
var child_id = $('#child_id');
var dataString = 'child_id=' + child_id;
$.ajax({
type: "POST",
url: base_url + "/finance/payment-history",
data: dataString,
dataType: 'html',
success: function(html) {
alert(html);
},
});
return false;
});
The function appears to work ok, it gives me an alert with the correct data.
{"payments":[{"id":"19","child_id":"21","club":"Breakfast Club","term":"Half Term 3","amount":"15.00","pdate":"2015-02-25","notes":"","created_at":"2015-02-11 12:16:32","updated_at":"2015-02-11 12:16:32","starting_debt":"0","debt_start_date":"2015-01-05"},{"id":"20","child_id":"21","club":"After School Club","term":"Half Term 3","amount":"11.50","pdate":"2015-02-25","notes":"","created_at":"2015-02-11 12:16:49","updated_at":"2015-02-11 12:16:49","starting_debt":"0","debt_start_date":"2015-01-05"}]}
I need to be able output this to the user so that it is readable. A lot of guides I find describe replacing data but as it stands there is no data until a child_id is selected.. i then want it show the above data in a readable way.
I have no idea how to start working with the data in my view file(php).
Thanks
[EDIT]updated with working code:
var base_url = 'http://dev.local/westview/public';
$('select.child_id').change(function() {
var response = "";
var child_id = $('#child_id').val();
var dataString = 'child_id=' + child_id;
$.ajax({
type: "POST",
url: base_url + "/finance/payment-history",
data: dataString,
success: function(response) {
var json_obj = $.parseJSON(response);
var output = "<ul>";
for (i=0; i < json_obj.payments.length; i++)
{
var payment = json_obj.payments[i];
var date = moment(payment.pdate).format('Do MMM YYYY');
output += "<li>£" + payment.amount + " - " + date + " (" + payment.club + ")</li>";
}
output += "</ul>";
$('.history-section').html(output);
},
dataType: "html"
});
});

Answer 1

Do like this.
var data = $.parseJSON("your_json");
var output= "<ul>";
for (i=0; i < data.payments.length; i++){
output += "<li>" + data.payments[i].id + ", " + data.payments[i].child_id + "</li>";
}
output += "</ul>";

Answer 2

use
dataType: 'json',
instead
dataType: 'html',
and then use each to fetch the record from response in success function

Answer 3

Use $.parseJSON() For Convert Json Format Data To Array
Right code at sucess of ajax..
Like,
var data = $.parseJSON(html);
data in you get array format of responce

Answer 4

You need to use json_encode() in your php file to send the data back as an array
For example;
$myarray = array("data1"=>"value1","data2"=>"value2");
echo json_encode($myarray);
You can then access the data separately in the js file like this;
success: function(html) {
alert(html.data1);
alert(html.data2);
},
You also need to change the dataType to 'json'

Answer 5

$('input[name=\'product_attribute[' + attribute_row + '][name]\']').catcomplete({
delay: 0,
source: function(request, response) {
$.ajax({
url: 'index.php?route=catalog/attribute/autocomplete&token=<?php echo $token; ?>',
type: 'POST',
dataType: 'json',
data: 'filter_name=' + encodeURIComponent(request.term),
success: function(data) {
response($.map(data, function(item) {
return {
category: item.attribute_group,
label: item.name,
value: item.attribute_id
}
}));
}
});
},
select: function(event, ui) {
$('input[name=\'product_attribute[' + attribute_row + '][name]\']').attr('value', ui.item.label);
$('input[name=\'product_attribute[' + attribute_row + '][attribute_id]\']').attr('value', ui.item.value);
return false;
}
});
You Can map your json something like this