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passing a variable with get request to PHP

Goal: I am trying to populate a dropdown from a database table column... I need to pass a variable from the front-end to the PHP indicating which table to ping from, as it may change depending on user selection beforehand...
This is where I'm trying to pass my which variable in to use as
this indicator — but I am having a hard time, because I am trying to
do so within a $.get request? If I could get $which = $_GET['id']; to report/gather what I have in my jQuery with let which = $(frm).attr("id"); I should be good to go.
How else could I do this, I don't think I could nor think it would be
any good practice to try and wrap a post around my get or vica
versa? Or chain a post then a get - I just need the PHP to access
my jQuery which variable so it knows which table to query.
Below is my most recent attempt: jquery
$('#agent').click(function(){
let which = $(frm).attr("id");
console.log(which);
$.get('dlteopt', 'id='+which, function (response) { // attempt at id
console.log(response);
$.each(response,function(i,obj){
let dd_data="<option value="+obj+">"+obj+"</option>";
$(dd_data).appendTo('#agent');
console.log(obj);
});
});
});
And the PHP side:
$app->get('/dlteopt', function ($request, $response, $args) {
$which = $_GET['id'];
var_dump($which);
if ($which) {
var_dump($which);
$db = $this->db;
$repo = new coolDBclass($db);
$selectIt = $repo->byCol($which);
}
});
here is function byCol btw: (all should be fine if I can just pass the correct table variable)
public function byCol($which) {
var_dump($which);
if ($which == 'table_1'){
$sql = "SELECT table_1 FROM tab.cool";
} else if ($which == 'table_2'){
$sql = "SELECT table_2 FROM tab.awesome";
} else if ($which == 'table_3'){
$sql = "SELECT table_3 FROM tab.rad";
}
// ............/
the relevant markup:
<select name='agent' id='agent'><option>Placeholder</option></select>

If you're trying to use the second parameter of the $.get method to pass the data, it needs to be an object.
See the examples in the docs.
.get('dlteopt', {id: which }, function (response) {

How do I use a php array within an array returned to Javascript?

I've been at this for more than half a day trying to figure out this problem and I swear I've tried every possible thing. So here's the idea behind what I'm trying to do... Every 10 seconds Javascript performs an AJAX call to see if you have any friends online, then returns a list of users, their status etc... Instead of formatting everything from PHP, I'll be formatting it from Javascript for various reasons... So here's what happens:
Javascript
// Let's get the data from the controller
$.post('/pagething', { datastuff }, function(data){
if(data.status == 'ok'){
// Magic nonsense here that can translate the array example:
var keys = Object.keys(data.allfriends);
}
} etc...
PHP
// Let's skip other code in the controller and focus on the important stuff
$friends_information = array(
'userid' => array();
'username' => array();
'avatar' => array();
'status' => array();
);
foreach($result_from_my_friends_model as $row){
// For ease of read, i'll just associate things with $row
$friends_information["userid"][] = $row->user_id;
$friends_information["username"][] = $row->username;
$friends_information["avatar"][] = $row->avatar;
$friends_information["status"][] = $row->status;
}
$result = array('status' => 'ok', 'allfriends' => $friends_information);
return json_encode($result);
exit();
The closest I've gotten is to either get the results by say username, or userid for example through a new object or getting the entire result but unable to distinguish between keys since object[0][1] for instance would return undefined.
Thank you in advanced, this stuff is tough to understand :/

There's no need to put each column into a separate element of $friend_array, things are generally easier if you keep all the data related to a particular friend together in an object. So do:
$result = array('status' => 'ok', 'allfriends' => $result_from_my_friends_model);
echo json_encode($result);
In the Javascript, make sure you specify that the result is JSON:
$.post('/pagething', { datastuff }, function(data) {
if (data.status == 'ok') {
$.each(data.allfriends, function(i, friend) {
// do stuff with friend.userid, friend.username, friend.avator, friend.status
});
}
}, 'json');

You already have your list_of_friend in your keysvariable of js. Just iterate through it then you will get your desired result. Best of luck

Kendo UI datasource sync() will not work

In the code below, the fetch() and sync() methods are not doing anything.
I am trying to see how the data in my localStorage gets updated and the methods are not updating it (example LS string is in the code)
Where am I going wrong?
function makeWorkingLS(collDesc, projDesc, Id, Description, ElapsedSeconds, ElapsedTime, WorkItemType){
//Create observable object from params
var activeTaskObject = kendo.observable ({
client: collDesc,
project: projDesc,
taskId: Id,
description: Description,
elapsedSeconds: ElapsedSeconds,
elapsedTime: ElapsedTime,
comment: WorkItemType
});
// example string in localStorage:
//{"client":"Morken Mindy","project":"Shazbat creation engine","taskId":183,"description":"Create the Shazbat 100% efficiency engine","elapsedSeconds":296803,"elapsedTime":"82h43m","comment":"Task"}
// Convert to JSON string for localStorage
var activeTask = JSON.stringify(activeTaskObject);
console.info(activeTask);
//Write to localStorage
window.localStorage.setItem("activeTask",activeTask);
//Set it as the active datasource for updating to webservice
var activeTaskDS = new kendo.data.DataSource({
transport: {
read: function(options){
taskItem = JSON.parse(localStorage["activeTask"]);
},
update: {
url: remUpd, //url var declared earlier in the process
dataType: "json"
}
},
schema: {
model: {
client: "client",
taskId: "taskId"
},
data: function(){
return taskItem;
}
}
});
activeTaskDS.fetch(function(){
activeTaskDS.data()[0].set("client", "NOBODY");
activeTaskDS.sync();
cosole.log("activeTaskDS.data()[0] : "+activeTaskDS.data()[0]); //should read 'NOBODY' but reads 'Morken Mindy'
});
}
Thanks in advance,
Neil.

I'm not sure what is the problem actually, but I have to point some important things:
AFAIK, when you customize any transport methods you have to pass the data into a callback in the options object:
transport: {
read: function(options){
taskItem = JSON.parse(localStorage["activeTask"]);
// Tells the widget to handle that collection
options.success(taskItem);
}
}
In schema.data it seems that you want to pass your data through this method(correct me if I'm wrong). But this method isn't for that purpose. It is used just to tell the widget which field to read(in case of passing a string to it) or to read a property from a response, which comes as a parameter that you are not using. Check the second example here. So this may not be right way to read the taskItem object as data;
Speaking about the taskItem object, it seems that its the base data of your dataSource but it isn't defined(at least on the snippet you posted). What I mean is, if you follow the step 1 you won't even need to read from that object no more.
Please let me know if this is helpful and if you need anyting more.

Trying to write to User class parse, masterkey is not working

I want to update a field within the User class without being logged in as a user. From reading online and other responses people say I should use the 'masterkey' to do so. Here is my cloud code where I have added in the master key. The code is executed but when I go to my data browser the totalScore and predictions values are still the same and not updated to the new values.
Parse.initialize("key", "key");
Parse.Cloud.define("userUpdate", function(request, response) {
Parse.Cloud.useMasterKey();
var publicReadACL = new Parse.ACL();
publicReadACL.setPublicWriteAccess(true);
request.object.setACL(publicReadACL);
var User = Parse.Object.extend("User");
var query = new Parse.Query(User);
query.equalTo("username", request.params.username);
query.find({
success: function(user) {
user.set("totalScore", request.params.totalS);
user.set("totalPredictions", request.params.totalG);
user.save()
},
error: function() {
response.error("f");
}
});
});
Any help would be massively appreciated.

Hopefully you've figured this out by now, but if you haven't...I would first say check to make sure that you're passing the "totalScore" and "totalPredictions" as numbers. If you pass them as strings and Parse is expecting a Number, it won't update. And generally, I believe it's best practice to query the user class as follows:
var query = new Parse.Query(Parse.User);
query.get(user.objectId, {
success: function(userAgain) {
userAgain.set("totalScore", totalScore);
userAgain.save(null, {
error: function(userAgain, error) {
// This will error, since the Parse.User is not authenticated
}
});
}
});
Then of course you'd still need to include the master key stuff etc...

Passing result from .getJSON() to another function results in undefined

Good day everyone,
I am pulling back some data from a database (via a PHP script) using jQuery's .getJSON() method. This is all well and good, the data comes back just fine and as expected. The problem occurs when I try to pass the data to a secondary function, no matter how I try to access the values of that data they come back as undefined. I have a feeling I am overlooking something very simple but after a lot of trial and error I come to SO asking for an extra set of eyes.
Here is a simple example of the JavaScript code.
function fnCheck_Vis(Row, sField, sMode)
{
sField = sField+"_vis";
sTest = Row.sField.val();
alert(sTest); // Comes back as undefined.
}
$(document).ready(function()
{
$("#btnSearch").click(function()
{
$("#divResults").empty();
var ssearch = $("#ssearch").val();
var i = 0;
$.getJSON("get_results.php?keywords=" + ssearch,
function(Data)
{
var iRec = 0;
$.each(Data, function(i, Row)
{
fnCheck_Vis(Row, "slinkpic1", "Int");
var content = Row.slast;
$("#divResults").append(content);
iRec++;
});
alert(iRec + " records retrieved using AJAX.");
});
});
});
The first piece of the fnCheck_Vis() function works fine and "_vis" is appended to the field name, this is proper behavior. No matter how I try to access that member in the dataset (Row) I can not get a value back.
I really appreciate any insight that can be given on this issue.
Thanks,
Nicholas

It looks like you want to access the property of Row whose name is stored in sField, not its actual sField property. Try:
function fnCheck_Vis(Row, sField, sMode)
{
sField = sField + "_vis";
var sTest = Row[sField];
alert(sTest);
}