Laravel 8: issues with dateTime (DataTables & Charts) - laravel

Question

This issue is happening across the entire application...
I have datatables & charts:
Datatables don't sort by dateTime correctly, aka Started Column.
Charts always starts with the latest date...not by order:
I am using Carbon for datatables like this:
->editColumn('startDateTime', function ($report) {
return Carbon::parse($report->startDateTime)->format('d M, Y');
})
For the charts, returning data as json then format the date:
$data = TrafficViolation::select('id', 'violationDateTime')
->orderBy('violationDateTime')
->get()
->groupBy(function($data) {
return Carbon::parse($data['violationDateTime'])->format('M');
});
The column type of these dates are DateTime in the database.
What's frustrating is that there is a datatable called Audit Log that came with the theme (Metronic 8) and it's sorting the date correctly here (created at):
And looking to its controller:
->editColumn('created_at', function (Activity $model) {
return $model->created_at->format('d M, Y H:i:s');
})
Looking at the Model there isn't anything related to Carbon or date functions there, noting that the data type of created_at is timestamp.
I tried:
Changing data type to timestamp instead of datetime.
Copying the same code of audit log, no need for Carbon, I get an error format() unknown.

Answer 1

To me it looks like you are overcomplicating things, why don't you just sortByDesc if you need the newest results first I do not understand. You can do this like so:
First in you TrafficValidation model add a casts to datetime
protected $casts = [
'violationDateTime' => 'datetime',
];
Then where you return the query just do
$data = TrafficViolation::select('id', 'violationDateTime')
->orderByDesc('violationDateTime')
->get()
->groupBy(function($data) {
return Carbon::parse($data->violationDateTime)->format('M');
});
And the reason audit log works for sorting is because it by default doesnt look at all at your query sorting, it takes the data and sorts it by itself