JIT building a functional json for organisation chart - php

Question

I want to build a json request required for JIT SpaceTree.
The workflow: a question is started with the id of the retrospective answer stored.
If the option is yes then it loads the next question based on the load_yes value. this load_yes value selects the id and loads that question.
If the option is no it loads the next no based question by its id stored under load_no,
json should look like:
var json = {
id: "start",
name: "does test work?",
data: {},
children: [{
id: "layer1_1",
name: "option: no, id 3, Q: test does work with option no?",
data: {},
children: []
}, {
id: "layer1_2",
name: "option: yes, id 2, Q: test does work!!",
data: {},
children: [{
id: "layer2_1",
name: "option: no, id 4, Q: test does work?",
data: {},
children: []
}, {
id: "layer2_2",
name: "option: yes, id 5, Q: ",
data: {},
children: []
}]
}]
};
$query = $mysqli->query("SELECT * FROM topic_answer");
while($obj = $query->fetch_object()){
$arr[] = array(
'id' => $obj->id,
'name' => $obj->topic_question,
'data' => '',
'children' => array(array(
'id' => $obj->load_yes,
'name' => $obj->load_yes,
'data' => '',
'children' =>array(),
),array(
'id' => $obj->load_no,
'name' => $obj->load_no,
'data' => '',
'children' => array(),
),
)
);
id, topic_name, topic_creator, topic_question, load_yes, start, load_no, end
1 test jordan does test work? 2 1 3 0
4 test jordan test does work no 0 0 0 0
5 test jordan test does work yes 0 0 0 0
2 test jordan test does work yes!! 4 0 5 0

Answer 1

in json, objects are depicted as {}. so basically what this code means is an array of objects:
[
{},
{}
]
so here, where you are nesting arrays:
'children' => array(array(
'id' => $obj->load_yes,
'name' => $obj->load_yes,
'data' => '',
'children' =>array(),
),array(
'id' => $obj->load_no,
'name' => $obj->load_no,
'data' => '',
'children' => array(),
),
)
you actually want to replace the inner array by an object, such as stdClass(). stdClass is used like this:
$obj = new stdClass();
$obj->id = "layer1_1";
$obj->name = "option: no, id 3, Q: test does work with option no?";
$obj->data = new stdClass();
$obj->children = array();
then, with php
'children' => array(
$obj1,
$obj2,
),