PHP using json_encode, must output the specific data - php

Question

I'm currently stuck at this scenario, now the other developer wants to output the API structure as seen on attached image.
json_required_format
But I tried as far as I can but I only got these result:
"all_projects": {
"TEST TOWNHOMES": {
"unit_types": [
{
"unit": "TOWNHOUSE 44.00"
}
]
},
"TEST HOMES": {
"unit_types": [
{
"unit": "DUPLEX WITH OUT GARAGE 44.50"
}
]
},
"TEST HOMES II": {
"unit_types": [
{
"unit": "DUPLEX WITH OUT GARAGE 44.50"
}
]
},
"TEST VILLAGE": {
"unit_types": [
{
"unit": "TOWNHOUSE 44.00"
},
{
"unit": "DUPLEX WITHOUT GARAGE 52.30"
}
]
}
I am using MVC framework,
This is my model looks like:
public function all_south_projects()
{
$this->db->distinct();
return $this->db->select('Project as project_name')->from('lots')
->where('available','YES')
->get()->result();
}
public function get_unit_types($projName)
{
$this->db->distinct();
return $this->db->select('UnitType as unit')->from('lots')
->where('Project',$projName)
->where('Available','YES')
->get()->result();
}
And then my controller is:
$resp = $this->MyModel->all_south_projects();
$test_array = array();
foreach ($resp as $value) {
$units = $this->MyModel->get_unit_types($value->project_name);
$allunits = array("unit_types"=>$units);
$allunits = (object) $allunits;
$test_array[$value->project_name] = $allunits;
}
//var_dump($test_array);
$stat = 200;
$message = 'Successfully fetched.';
if(empty($test_array)){
$empty=json_decode('{}');
json_output2($stat,'all_projects',$message,$empty);
}else{
json_output2($stat,'all_projects',$message,$test_array);
}
json_output2 is on my helper to customize json format:
Here is my code:
function json_output2($statusHeader,$responseName,$message,$response)
{
$ci =& get_instance();
$ci->output->set_content_type('application/json');
$ci->output->set_status_header($statusHeader);
$ci->output->set_output(json_encode(array('status' =>
$statusHeader,'message' => $message,$responseName =>$response)));
}
NOTE: Scenario is:
The API must give all the projects having available units,
if the project is available, then it needs to get its corresponding available units to view. I know I can make another API call but this time, we need to improve the UX.
Can someone enlighten me to get through this? Thank you!

Answer 1

Change this part :
foreach ($resp as $value) {
$units = $this->MyModel->get_unit_types($value->project_name);
$allunits = array("unit_types"=>$units);
$allunits = (object) $allunits;
$test_array[$value->project_name] = $allunits;
}
To :
foreach ($resp as $value) {
$units = $this->MyModel->get_unit_types($value->project_name);
$test_array[] = [
"project_name" => $value->project_name,
"unit_types" => $units
];
}
You don't have to cast your associative array to object like you did there : $allunits = (object) $allunits; because an associative array will always be serialized as a JSON object (associative arrays do not exist in JSON).