Delete record in database if checkbox is unchecked - php

Question

I have a checkbox field in my form, I want to insert data to database if the checkbox is checked and delete the data in database if the checkbox is unchecked.
Here is my checkbox code:
<ul class="list-unstyled mb-0">
#foreach ($companies as $company)
<li class="d-inline-block mr-2 mb-1">
<fieldset>
<div class="checkbox">
<input type="checkbox" name="company_id[]"
class="checkbox-input" value="{{ $company->id }}"
id="{{ $company->id }}"
#foreach ($supervisor_company as $spv)
#if ($spv != null)
#if ($spv->company_id == $company->id)
checked
#endif
#endif
#endforeach>
<label for="{{ $company->id }}">{{ $company->name }}</label>
</div>
</fieldset>
</li>
<li class="d-inline-block mr-2 mb-1">
#endforeach
</ul>
And this is my controller:
if ($request->has('company_id')) {
foreach ($request->company_id as $key => $company) {
$spv_data = EmployeeSpvCompany::where('employee_id', $employee_id)->where('company_id', $company)->first();
if ($spv_data != null) {
EmployeeSpvCompany::where('employee_id', $employee_id)->where('company_id', $company)->update(['company_id' => $company]);
} else {
$emp_spv = new EmployeeSpvCompany;
$emp_spv->employee_id = $employee_id;
$emp_spv->company_id = $company;
$emp_spv->save();
}
}
}
Insert to database if the checkbox is checked is already working, but I don't know how to delete the data in database if the checkbox is unchecked

Answer 1

I expect the company_id field is a multi-select type so the value will be returned in the form of an array. I guess the following code will work in this situation.
$companyIds = $request->has('company_id'); // [1, 2]
if ($companyIds) {
foreach ($companyIds as $company_id) {
$employeeSpvCompanyInstance = EmployeeSpvCompany::firstOrCreate([
'employee_id' => $employee_id,
'company_id' => $company_id
]);
}
EmployeeSpvCompany::where('employee_id', $employee_id)->whereNotIn('company_id', $companyIds)->delete();
} else {
EmployeeSpvCompany::where('employee_id', $employee_id)->delete();
}

Answer 2

Ah!! I found something called whereNotIn. I just need to check if the data is not in my array request.
EmployeeSpvCompany::whereNotIn('company_id', $request->company_id)->delete();