Passing json from php to javascript veriable

Question

I am using a php to form a json object from sql and using json_encode($myarr) which is working perfectly. in my javascript i am using a util function to get the json which is also working fine.

var get_schedule_service = webservices.get_schedule + "/" + 0;
generic_get(get_schedule_service, function(response) {
    if (response) {
        console.dir(response);
    } else {
        alert('empty schedule');
    }
});

the above code outputs the proper json.

The problem i am facing is when i try to store the output in a javascript var i get an error that the var is undefined.

i have also tried putting the entire webserice in an array something like this:

var get_schedule_service = webservices.get_schedule + "/" + 0;
var my_json_array = generic_get(get_schedule_service, function(response) {
    if (response) {
        return response;
    }
});

If this is ajax thing, assuming so, then it will not be having value on the immediate step as this will be asynchronous.. You need to make use of deferred and promise object here. — Guruprasad J Rao
– Guruprasad J Rao, Commented May 17, 2016 at 7:21
yes, its a ajax request. get_generic is a util function im using for api calls — Maxxer
– Maxxer, Commented May 17, 2016 at 7:26
What is generic_get? Please, provide the full definition (the full code). — Marc Compte
– Marc Compte, Commented May 17, 2016 at 7:33

Sandeep Nayak · Accepted Answer · 2016-05-17 07:21:10Z

0

Since AJAX request is async by nature, you need to pass a callback like this, which can be called when the response is received:

var get_schedule_service = webservices.get_schedule + "/" + 0;
generic_get(get_schedule_service, function (response, myCallback) {
                if (response) {
                   myCallback(response);
                }
                });


function myCallback(response){
   console.log(response);
}

answered May 17, 2016 at 7:21

Sandeep Nayak

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