Fetch data when you have multiple search queries in laravel - php

Question

I have this type of modal for search data from the database.
Image
I want to search the data if the user only types company name and CIN or *company name only or
company state and company district user can choose any field. So I want to fetch the data only on selected fields.
Is there any simplest way to do this
I have coded multiple if-else statements.
My Code
else if ($req->state && $req->district) {
$data = tbl_company::query()
->where(
"state",
"LIKE",
"%{$req->state}%"
)->where(
"district",
"LIKE",
"%{$req->district}%"
)
->paginate(100);
}
// Filter using only state and city
else if ($req->city && $req->district && $req->state == null) {
$data = tbl_company::query()
->where(
"city",
"LIKE",
"%{$req->city}%"
)->where(
"district",
"LIKE",
"%{$req->district}%"
)
->paginate(100);
}
// company status only
else if ($req->company_status && $req->city == null && $req->district == null && $req->state == null) {
$data = tbl_company::query()
->where(
"company_status",
$req->company_status
)
->paginate(100);
}

Answer 1

use Conditional Clauses
$data = tbl_company::query()->when($req->state && $req->district, function ($query, $req) {
$query->where("state", "LIKE", "%{$req->state}%")
->where("district", "LIKE", "%{$req->district}%");
})->when($req->city && $req->district && $req->state == null, function ($query, $req) {
$query->where("city", "LIKE", "%{$req->city}%")
->where("district", "LIKE", "%{$req->district}%");
})->paginate(100);
Updates
use loop
$data = tbl_company::query()->where(function ($query)use($req){
foreach ($req->only('state','district','city','company_status') as $filterField=>$filterFieldValue){
if(!empty($filterFieldValue)&&is_array($filterFieldValue)){
$query->wherein($filterField,$filterFieldValue);
}elseif (!empty($filterFieldValue)){
$query->where($filterField, "LIKE", "%{$filterFieldValue}%");
}
}
})->paginate(100);

Answer 2

I found the answer. I solved this problem using Pipeline Design Pattern
$query = tbl_company::query();
if ($req->has('state')) {
$query->whereIn('state', $req->input('state'));
}
if ($req->has('district')) {
$query->whereIn('district', $req->input('district'));
}
if ($req['date_of_registration']['start'] && $req['date_of_registration']['end']) {
$from = Carbon::parse($req['date_of_registration']['start']);
$to = Carbon::parse($req['date_of_registration']['end']);
$query->whereBetween(
DB::Raw("STR_TO_DATE(date_of_registration,'%d-%m-%Y')"),
[$from, $to]
);
}
if ($req['authorized_capital']['start'] && $req['authorized_capital']['end']) {
$query->whereBetween(
"authorized_capital",
[$req['authorized_capital']['start'], $req['authorized_capital']['end']]
);
}
//finally
$data = $query->paginate(100);