multi Input search form - laravel

Question

First, I try to check if the two fields 'id' and 'flowid' in form are in the same row or not. If they are in the same row, bring all the data in the row into the view. If not the same, then return and display a message that your inputs don't match. I'm having issues with this. Please advise.
Migration
Schema::create('letters', function (Blueprint $table) {
$table->id()->unique();
$table->string('flowid');
$table->string('id_number');
$table->string('letter_type');
$table->string('name_en');
$table->string('name_ar');
$table->string('nationality_en');
$table->string('nationality_ar');
$table->string('jobt_en');
$table->string('jobt_ar');
$table->string('to_en');
$table->string('to_ar');
$table->date('date_issue');
$table->date('hdate');
$table->date('salary_next');
$table->string('email');
$table->string('iban')->nullable();
$table->string('endser')->nullable();
$table->string('endser1')->nullable();
$table->string('salary_b_l')->nullable();
$table->string('housing_l')->nullable();
$table->string('trans_l')->nullable();
$table->string('mob_all_l')->nullable();
$table->string('other_l')->nullable();
$table->string('total_salary_l')->nullable();
$table->timestamps();
});
Model
class Letter extends Model
{
use HasFactory;
protected $guarded=[];
}
Controller
public function verify(Request $request)
{
$id = $request->id;
$flowid = $request->flowid;
if ($id != "") {
$letter = Letter::where('flowid', 'LIKE', '%' . $id . '%')->get();
if (!empty($flowid)) {
$letter->where('flowid', '=', $flowid);
}
$letter = Letter::findOrFail($letter());
return view('layouts.verify', compact('letter'));
}
}
View
<form action="{{ route('letter.verfiy') }}" method="GET">
{{-- #csrf --}}
<div class="form-group">
<label class="control-label col-sm-2" for="id">
Certificate Code:
</label>
<div class="col-sm-10">
<input type="text" class="form-control" name="id"
placeholder="Type certificate Code">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2" for="flowid">
Flow Employee ID:
</label>
<div class="col-sm-10">
<input type="text" class="form-control" name="flowid"
placeholder="Type Flow ID">
</div>
</div>
<button type="submit" class="btn btn-primary">check</button>
</form>
Route
Route::any('/verfiy', [LetterController::class, 'verify',])->name('letter.verfiy');

Answer 1

Try that
$id = $request->id;
$flowid = $request->flowid;
if (!empty($id) {
$letter = Letter::find($id);
if (!empty($flowid)) {
if($letter->flowid === $flowid){
return view('layouts.verify', compact('letter'));
}
return 'Error'; // return error or redirect
}
}

Answer 2

check if the two fields 'id' and 'flowid' in form are in the same row or not
I believe a basic where clause should do the job for you here because you are checking id and flowid in one row.
$letter = Letter::where('id', $id)->where('flowid', $flowId)->first();
if (! $letter) {
return "Letter not found";
}
return $letter;